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Effect of Anti-nematode Preparations on Physiological Traits of Tomato Leaves Affected by Root-knot Nematode
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作者 卢树昌 刘慧芹 +1 位作者 王小波 毕于慧 《Plant Diseases and Pests》 CAS 2011年第3期65-68,共4页
[ Objective ] The paper was to study the effects of anti-nematode preparations with different mechanisms on changes of enzyme systems and membrane permeability of tomato leaves, so as to provide reference basis for ef... [ Objective ] The paper was to study the effects of anti-nematode preparations with different mechanisms on changes of enzyme systems and membrane permeability of tomato leaves, so as to provide reference basis for effective control of soil root-knot nematode in greenhouse. [ Method] With tomato seedlings af- fected by root-knot nematode as material, changes of superoxide dismutase(SOD), peroxidase( POD), relative conductivity and malondialdehyde (MDA) in toma- toes were tested after the seedling soil was treated by preparations of Wuxianmei, Hailvsu, Duxiandna and Avermectin. [ Result] After treated by different prepara- tions, SOD and POD activity of tomato leaves were higher than control, and that treated by Wuxianmei was the highest. In addition to Duxiandna, the relative con- ductivity and MDA content of other treatments were significantly lower than control. When tomatoes were planted for 70 d, the effect of Avermectin against reot-knot nematode Was the best of 66.3%. [ Conclusion] After tomatoes were infected by root-knot nematode, different preparation treatments all had certain control effect, which made the physical indicators of tomato have obvious change. Integrated control of multiple preparations in greenhouse was beneficial to control soil root-knot nematode. 展开更多
关键词 TOMATO Root-knot nematode Preparation LEAF physiological trait China
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Performance in Grain Yield and Physiological Traits of Rice in the Yangtze River Basin of China During the Last 60 yr 被引量:23
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作者 ZHANG Hao CHEN Ting-ting +3 位作者 LIU Li-jun WANG Zhi-qin YANG Jian-chang ZHANG Jian-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2013年第1期57-66,共10页
Knowledge on the performance in grain yield and physiological traits is essential to understand the main yield-limiting factor and make strategies for breeding and crop management in rice (Oryza sativa L.). This stu... Knowledge on the performance in grain yield and physiological traits is essential to understand the main yield-limiting factor and make strategies for breeding and crop management in rice (Oryza sativa L.). This study investigated the changes in grain yield and associated physiological traits of rice in the Yangtze River Basin of China during the last 60 yr. Thirteen mid-season indica and 12 japonica rice cultivars that were popularly used were grown in the field in 2008 and 2009. The grain yield and yield components, biomass, leaf area, leaf photosynthesis, root oxidation activity, and harvest index were examined. The results showed that grain yield and grain yield per day have progressively increased during the years and such increases are mainly attributed to the expanded sink size as a result of more spikelets per panicle, especially for the case of super rice. Both biomass and harvest index were increased with the improvement of cultivars. Increase in biomass for modern rice cultivars was associated with an enhancement of leaf area and photosynthesis, root dry weight, and root oxidation activity, although the indica super rice cultivars showed a lower leaf photosynthetic rate and root oxidation activity than the semi-dwarf cultivars during the grain filling period. Both indica and japonica super rice cultivars exhibited a low percentage of filled grains, which may limit their great yield potential. All the data suggested that grain yield have been substantially improved during the 60 yr of rice breeding in the Yangtze River Basin. Expanded sink size, increased dry matter production and harvest index, and enhanced leaf area and photosynthesis, root dry weight, and root oxidation activity contribute to the improvement in grain yield. Increase in filling efficiency could realize the great yield potential in super rice. 展开更多
关键词 RICE yield performance grain filling physiological traits super rice
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Deciphering the morpho–physiological traits for high yield potential in nitrogen efficient varieties(NEVs):A japonica rice case study 被引量:3
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作者 ZHU Kuan-yu YAN Jia-qian +4 位作者 SHEN Yong ZHANG Wei-yang XU Yun-ji WANG Zhi-qin YANG Jian-chang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2022年第4期947-963,共17页
The use of nitrogen(N)-efficient rice(Oryza sativa L.) varieties could reduce excessive N input without sacrificing yields. However, the plant traits associated with N-efficient rice varieties have not been fully defi... The use of nitrogen(N)-efficient rice(Oryza sativa L.) varieties could reduce excessive N input without sacrificing yields. However, the plant traits associated with N-efficient rice varieties have not been fully defined or comprehensively explored. Here, three japonica N-efficient varieties(NEVs) and three japonica N-inefficient varieties(NIVs) of rice were grown in a paddy field under N omission(0 N, 0 kg N ha^(-1)) and normal N(NN, 180 or 200 kg N ha^(-1)) treatments. Results showed that NEVs exhibited higher grain yield and nitrogen use efficiency(NUE) than NIVs under both treatments, due to improved sink size and filled-grains percentage in the former which had higher root oxidation activity and greater root dry weight, root length and root diameter at panicle initiation(PI), as well as higher spikelet-leaf ratio and more productive tillers during the grain-filling stage. Compared with NIVs, NEVs also exhibited enhanced N translocation and dry matter accumulation after heading and improved flag leaf morpho-physiological traits, including greater leaf thickness and specific leaf weight and higher contents of ribulose^(-1),5-bisphosphate carboxylase/oxygenase, chlorophyll, nitrogen, and soluble sugars, leading to better photosynthetic performance. Additionally, NEVs had a better canopy structure, as reflected by a higher ratio of the extinction coefficient for effective leaf N to the light extinction coefficient, leading to enhanced canopy photosynthesis and dry matter accumulation. These improved agronomic and physiological traits were positively and significantly correlated with grain yield and internal NUE, which could be used to select and breed N-efficient rice varieties. 展开更多
关键词 RICE N-efficient varieties nitrogen use efficiency root morpho–physiological traits nitrogen translocation leaf morphology canopy structure
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Morphological and physiological traits of large-panicle rice varieties with high filled-grain percentage 被引量:7
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作者 MENG Tian-yao WEI Huan-he +6 位作者 LI Chao DAI Qi-gen XU Ke HUO Zhong-yang WEI Hai-yan GUO Bao-wei ZHNAG Hong-cheng 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第8期1751-1762,共12页
financed by the Special Program of Super Rice of Ministry of Agriculture, China (02318802013231);the National Public Services Sectors (Agricultural) Research Projects, Ministry of Agriculture, China (201303102);... financed by the Special Program of Super Rice of Ministry of Agriculture, China (02318802013231);the National Public Services Sectors (Agricultural) Research Projects, Ministry of Agriculture, China (201303102);the Great Technology Project of Ningbo, China (2013C11001) 展开更多
关键词 large-panicle varieties improved filling efficiency morphological and physiological traits grain filling characteristics
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QTL analysis of leaf photosynthetic rate and related physiological traits in rice(Oryza sativa L.) 被引量:3
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作者 TENG Sheng, QIAN Qian, ZENG Dali, Yasufumi Kunihiro, Hiroshi Fujimoto, HUANG Daman, and ZHU Lihuang, Key Lab for Rice Biology, CNRRI, Hangzhou 310006 Inst of Genetics and Development Biology, the Chinese Academy of Sciences, Beijing 100101 +1 位作者 College of Life Sci, Zhejiang Univ, Hangzhou 310029, China Japan International Res Center for Agri Sci, Tsukuba, Japan 《Chinese Rice Research Newsletter》 2002年第3期4-6,共3页
Photosynthesis is one of the most important factors that influence the biomass and yield. Recently, more attention has been paid to genetic study on rice photosynthesis and rice breeding for the physiological traits r... Photosynthesis is one of the most important factors that influence the biomass and yield. Recently, more attention has been paid to genetic study on rice photosynthesis and rice breeding for the physiological traits related to high efficient photosynthesis. Chlorophyll content, stomatal resistance, and transpiration rate were very important physiological traits related to photosynthesis. But until now, no genetic study on these traits has been reported. A DH population derived from anther culture of ZYQ8/JX17, a typical indica/japonica hybrid was developed, 展开更多
关键词 RATE DH Oryza sativa L QTL analysis of leaf photosynthetic rate and related physiological traits in rice
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Physiological traits of hybrid rice (Oryza sativa L.) associated with iron toxicity 被引量:1
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作者 CAI Miaozhen LIN Xianyong Luo Ancheng ZHANG Yongsong,Dept of Resource Sci,College of Environmental and Resource Sciences,Zhejiang Univ,Hangzhou 310029,China 《Chinese Rice Research Newsletter》 2002年第3期24-25,共2页
Iron toxicity,a physiological disorder of rice,is widelyspread in tropical and subtropical areas and causes severerice yield reduction.Although there has been a consider-able amount of research on flee growth,nutrient... Iron toxicity,a physiological disorder of rice,is widelyspread in tropical and subtropical areas and causes severerice yield reduction.Although there has been a consider-able amount of research on flee growth,nutrient uptaking, 展开更多
关键词 associated with iron toxicity physiological traits of hybrid rice Oryza sativa L
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Physiological traits of rice seedlings in response to inorganic arsenic
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作者 WANG Hai-bin TABG Gui-di +4 位作者 LIN Zhi-hua CHEN Rong-shan LIU Chang-hui HE Hai-bin LIN Wen-xiong 《Journal of Agricultural Science and Technology》 2009年第12期9-15,18,共8页
The aim of our study was to better understand the different responses of rice seedling to different species of inorganic arsenic As203 (As(Ill)) and Na2HAsO4 (As(V)). Our results indicate that the biomass of r... The aim of our study was to better understand the different responses of rice seedling to different species of inorganic arsenic As203 (As(Ill)) and Na2HAsO4 (As(V)). Our results indicate that the biomass of rice seedling decreased as arsenic concentration increased, with the decrease being more significant at higher arsenic concentrations. In addition, the analysis of superoxide dimutase (SOD), peroxidase (POD), and catalase (CAT) in rice roots and leaves showed that the activity of these three enzymes significantly decreased in rice tissues, especially in rice roots, as arsenic concentration was increased,. Further, the uptake and utilization efficiencies of N, P, and K were found to decrease as arsenic concentration was increased. However, the uptake and utilization efficiencies of P and K were mainly affected by As(IlI), whereas those of N were mainly affected by As(V). Inductively coupled plasma-mass spectrometry (ICP-MS) was used to assay arsenic accumulation in rice tissues; the results indicate that the arsenic content in rice tissues was enhanced when arsenic concentration was increased, especially in rice roots after arsenic treatment. 展开更多
关键词 inorganic arsenic Rice(Oryza satica L.) physiological traits NUTRITION
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Genome-wide association study dissecting drought resistance-associated loci based on physiological traits in common bean
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作者 Lei Wu Yujie Chang +2 位作者 Lanfen Wang Shumin Wang Jing Wu 《Journal of Integrative Agriculture》 SCIE CAS 2024年第11期3657-3671,共15页
Genetic improvement of drought resistance is one of the main breeding goals for common bean,so molecular markers must be identified to facilitate drought resistance breeding.In this study,we evaluated the proline,treh... Genetic improvement of drought resistance is one of the main breeding goals for common bean,so molecular markers must be identified to facilitate drought resistance breeding.In this study,we evaluated the proline,trehalose,raffinose,and stachyose contents of 210 common bean accessions under two watering conditions and found large variations in all four.The coefficients of variation ranged from 21.21%for proline content to 78.69%for stachyose content under well-watered conditions,and from 20.11%for proline content to 50.08%for trehalose content under drought stress.According to our genome-wide association analysis,32 quantitative trait loci were associated with drought resistance,seven of which overlapped with known loci.Four hotspot regions were identified at Pv01,Pv07 and Pv11.A set of candidate genes was identified,including genes encoding MYB,bZIP,bHLH,ERF,and protein kinases.Among these genes,Phvul.001G189400,Phvul.007G273000 and Phvul.008G270500 were annotated as bZIP,ERF and WRKY,respectively.These genes are reportedly involved in drought stress responses in Arabidopsis thaliana and were induced by drought stress in common bean.Significant SNPs in six candidate gene regions formed different haplotypes,and phenotypic analysis revealed significant differences among the haplotypes.These results provide new insight into the genetic basis of drought resistance in common bean and reveal candidate genes and superior natural variations that will be useful for improving common bean. 展开更多
关键词 common bean drought resistance GWAS physiological trait
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Physiological Response Mechanism and Drought Resistance Evaluation of Passiflora edulis Sims under Drought Stress
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作者 Binyang Zhao Fengchan Wu +3 位作者 Guojun Cai Peiyu Xi Yulin Guo Anding Li 《Phyton-International Journal of Experimental Botany》 SCIE 2024年第6期1345-1363,共19页
In order to explore the response mechanism of Passiflora edulis Sims to drought stress,the changes in morpho-logical and physiological traits of Passiflora edulis Sims under different drought conditions were studied.A t... In order to explore the response mechanism of Passiflora edulis Sims to drought stress,the changes in morpho-logical and physiological traits of Passiflora edulis Sims under different drought conditions were studied.A total of 7 germplasm resources of Passiflora edulis Sims were selected and tested under drought stress by the pot culture method under 4 treatment levels:75%–80%(Control,CK)of maximumfield water capacity,55%–60%(Light Drought,LD)of maximumfield water capacity,i.e.,mild drought,40%–45%(Moderate Drought,MD)of max-imumfield water capacity,i.e.,moderate drought and 30%–35%(Severe Drought,SD)of maximumfield water capacity,i.e.,severe drought.On the 40th day of drought treatment,13 indices,including seedling growth mor-phology,physiology,and biochemistry,were measured.The results showed that under drought stress,the height and ground diameter of P.edulis Sims gradually decreased with increasing drought stress,and there were signifi-cant differences in seedling height and ground diameter among the treatments.Drought stress significantly inhib-ited the growth of seven P.edulis Sims varieties.The contents of soluble sugar(SS),soluble protein(SP),proline(Pro),and other substances in P.edulis Sims basically increased with increasing drought stress.With the aggrava-tion of drought stress,the malondialdehyde(MDA)content of P.edulis Sims tended to increase to different degrees,the superoxide dismutase(SOD)activity and peroxidase(POD)activity both tended to increase atfirst and then decrease,and the change in catalase(CAT)activity mostly showed a gradual increasing trend.The con-tents of endogenous hormones in P.edulis Sims significantly differed under different degrees of drought stress.With the aggravation of drought stress,the abscisic acid(ABA)content of P.edulis Sims tended to increase,whereas the contents of gibberellin(GA),indoleacetic acid(IAA),and zeatin nucleoside(ZR)exhibited a down-ward trend.A comprehensive evaluation of the drought resistance of seven P.edulis Sims varieties was conducted based on the principal component analysis method,and the results showed that the drought resistance decreased in the order XH-BL>XH-TWZ>TN1>GH1>ZJ-MT>LP-LZ>DH-JW. 展开更多
关键词 Drought resistance water stress PHYTOHORMONE morphological trait physiological traits
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Assessing the Suitability of Various Physiological Traits to Screen Wheat Genotypes for Salt Tolerance 被引量:1
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作者 Salah E. EI-Hendawy Yuncai Hu Urs Schmidhalter 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2007年第9期1352-1360,共9页
Success of improving the salt tolerance of genotypes requires effective and reliable screening traits in breeding programs. The objective was to assess the suitability of various physiological traits to screen wheat g... Success of improving the salt tolerance of genotypes requires effective and reliable screening traits in breeding programs. The objective was to assess the suitability of various physiological traits to screen wheat genotypes for salt tolerance. Thirteen wheat genotypes from Egypt, Germany, Australia and India were grown in soil with two salinity levels (control and 150 mmol/L NaCI) in a greenhouse. The physiological traits (ion contents in leaves and stems, i.e. Na^+, Cl^-, K^+, Ca^2+), the ratios of K^+/Na^+ and Ca^+/Na^+ in the leaves and stems, net photosynthesis rate, stomatal conductance, transpiration rate, chlorophyll content (SPAD value), and leaf water relations, were measured at different growth stages. The physiological traits except for Na^+ and Cl^- in stems and the leaf transpiration rate at 150 mmol/L NaCI showed a significant genotypic variation, indicating that the traits that have a significant genotypic variation may be possibly used as screening criteria. According to the analysis of linear regression of the scores of the physiological traits against those of grain yield, however, the physiological traits of Ca^2+ and Ca2^+/Na^+ at 45 d and final harvest with the greatest genotypic variation were ranked at the top. From a practical and economic point of view, SPAD value should be considered to be used as screening criteria and/or there is a need to develop a quick and practical approach to determine Ca^2+ in plant tissues. 展开更多
关键词 physiological traits SALINITY SCREENING wheat genotypes.
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Rhizobacteria facilitate physiological and biochemical drought tolerance of Halimodendron halodendron (Pall.) Voss
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作者 Mohammad Hossein TAGHIZADEH Mohammad FARZAM Jafar NABATI 《Journal of Arid Land》 SCIE CSCD 2023年第2期205-217,共13页
Growth-promoting bacteria(GPB)have shown promising effects on serving plants against environmental constraints such as drought.Nevertheless,simultaneous effects of different GPB have less been considered for arid land... Growth-promoting bacteria(GPB)have shown promising effects on serving plants against environmental constraints such as drought.Nevertheless,simultaneous effects of different GPB have less been considered for arid land plants and under field conditions.We investigated the effects of single and combined application of GPB,including free-living nitrogen-fixing bacteria(NFB),phosphate solubilizing bacteria(PSB),potassium solubilizing bacteria(KSB),a combination of NFB,PSB,and KSB(NPK),and control,at three drought stress treatments.In order to better understand the interactions between drought and GPB,we measured the morphological,biochemical,and physiological plant traits.The target plant was salt tree(Halimodendron Halodendron(Pall.)Voss),a legume shrub native to arid lands of Central and West Asia.All biofertilizer treatments enhanced the growth,physiology,and biochemistry of salt tree seedlings,and there were significant differences among the treatments.KSB and PSB treatments increased photosynthetic pigments,but KSB treatment was more efficient in transpiration rate and stomatal regulation and increased the soluble carbohydrates.PSB treatment had the highest effect on root traits,such as taproot length,root volume,cumulative root length,and the ratio of root to shoot.NFB treatment enhanced root diameter and induced biomass translocation between root systems.However,only the application of mixed biofertilizer(i.e.,NPK treatment)was the most significant treatment to improve all plant morphological and physiological characteristics of salt tree under drought stress.Therefore,our results provided improvement of some specific plant traits simultaneous with application of three biofertilizers to increase growth and establishment of salt tree seedlings in the degraded arid lands. 展开更多
关键词 growth-promoting bacteria physiological traits drought stress BIOFERTILIZER root traits Halimodendron Halodendron(Pall.)Voss
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Adaptive mechanisms of Ardisia crenata var.bicolor along an elevational gradient on Gaoligong Mountain,Southwest China 被引量:1
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作者 AI Xing-mei LI Yu +1 位作者 XIE Huan ZHAO Cai-bao 《Journal of Mountain Science》 SCIE CSCD 2023年第3期765-778,共14页
Plants overcome environmental stress by generating metabolic pathways.Thus,it is crucial to understand the physiological mechanisms of plant responses to changing environments.Ardisia crenata var.bicolor has an import... Plants overcome environmental stress by generating metabolic pathways.Thus,it is crucial to understand the physiological mechanisms of plant responses to changing environments.Ardisia crenata var.bicolor has an important ornamental and medicinal value.To reveal the impact of elevational gradient on the habitat soil and plant physiological attributes of this species,we collected root topsoil(0–20 cm)and subsoil(20–40 cm)samples and upper leaves at the initial blooming phase,in a survey of six elevations at 1,257 m,1,538 m,1,744 m,1,970 m,2,135 m,and 2,376 m,with 18 block plots,and 5sampling points at each site.Temperature decreases with an increase in elevation,and soil variables,and enzymatic activities fluctuated in both the topsoil and subsoil,with all of them increasing with elevation and decreasing with soil depth.Redundancy analysis was conducted to explore the correlation between the distribution of A.crenata var.bicolor along the elevational gradient and soil nutrients and enzyme activities,the soil properties were mainly affected by p H at low elevations,and governed by total phosphorus(TP)and available nitrogen(AN)at high elevations.The levels of chlorophyll,carbohydrates,and enzymatic activity except for anthocyanin in this species showed significant variation depending on physiological attributes evaluated at the different collection elevations.The decline in chlorophyll a and b may be associated with the adaptive response to avoid environmental stress,while its higher soluble sugar and protein contents play important roles in escaping adverse climatic conditions,and the increases in activities of antioxidant enzymes except peroxidase(POD)reflect this species’higher capacity for reactive oxygen scavenging(ROS)at high elevations.This study provides supporting evidence that elevation significantly affects the physiological attributes of A.crenata var.bicolor on Gaoligong Mountain,which is helpful for understanding plant adaptation strategies and the plasticity of plant physiological traits along the elevational gradients. 展开更多
关键词 Ardisia crenata var.bicolor Adaptive distribution ELEVATION Gaoligong Mountain Plant physiological trait Soil physicochemical properties
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Phenotypic variation among five provenances of Populus simonii in northern China 被引量:3
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作者 WEI Zun-zheng ZHAO Xing PAN Wei ZHANG Jin-feng LI Bai-lian ZHANG De-qiang 《Forestry Studies in China》 CAS 2011年第2期97-103,共7页
We investigated phenotypic variation ofPopulus simonii from five provenances in northern China. Our results show that significant differences exist between plants of different provenances in morphological and physiolo... We investigated phenotypic variation ofPopulus simonii from five provenances in northern China. Our results show that significant differences exist between plants of different provenances in morphological and physiological traits, except for leaf-stalk length and the number of leaf margins. The coefficient of variation for all traits ranges from 14.77% to 81.49%. The mean phenotypic coefficient of differentiation (VST) is 47.1%, which means that the variation within provenances is the major source for phenotypic variation in P. simonii. Given our cluster analysis of provenances based on an average linkage computing method, the five provenances ofP. simonii investigated could be divided into three groups. Our results provide a theoretical basis for genetic resource conservation and provenance selection of natural P. simonii in northern China. 展开更多
关键词 Populus simonii morphological traits physiological traits genetic variation
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Association and Heritability Studies for Drought Resistance under Varied Moisture Stress Regimes in Backcross Inbred Population of Rice 被引量:1
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作者 R.SELLAMMAL S.ROBIN M.RAVEENDRAN 《Rice science》 SCIE 2014年第3期150-161,共12页
Drought stress is one of the major constraints affecting rice production and yield stability in the rainfed regions. To understand the physiological basis of drought resistance related component traits, we used a back... Drought stress is one of the major constraints affecting rice production and yield stability in the rainfed regions. To understand the physiological basis of drought resistance related component traits, we used a backcross inbred population of rice under three kinds of moisture regimes viz., non-stress, moderate (24.48%) and severe stress (73.97%) conditions which reflect the differential responses of the genotypes to varying stress intensities. The plot yield, 1000-grain weight, panicle exsertion and canopy air temperature difference exhibited high heritability under the control conditions, whereas spikelet sterility and single plant yield exhibited high heritability under the moderate stress conditions. Traits such as days to 50% flowering, plant height and osmotic potential showed high heritability under the severe stress conditions. Plot yield under stress was significantly and positively correlated with harvest index and 1000-grain weight, but negatively associated with leaf rolling score and days to 50% flowering. The drought susceptibility index and drought response index were negatively correlated between each other both under the moderate and severe stress conditions. The derived traits viz., difference in panicle length between the control and the severe stress was associated with osmotic adjustment measured under field conditions. Difference in plant height and panicle length was negatively associated with plot yield under stress. 展开更多
关键词 RICE drought resistance physiological trait HERITABILITY
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Clonal variation in growth,PSII photochemical activity and polar metabolites in Pinus elliottii×P.caribaea
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作者 Wenbing Guo Fencheng Zhao +4 位作者 Yang Liu Zhen Li Huishan Wu Yiliang Li Fangyan Liao 《Journal of Forestry Research》 SCIE CAS CSCD 2022年第1期63-74,共12页
Pinus elliottii×P.caribaea is a widely planted commercial tree hybrid in South China.To investigate the potential of physiological parameters for clonal selection,cuttings of three clones(EH3,EH4 and EH5)and a co... Pinus elliottii×P.caribaea is a widely planted commercial tree hybrid in South China.To investigate the potential of physiological parameters for clonal selection,cuttings of three clones(EH3,EH4 and EH5)and a control were grown in phosphorus treated pots.Significant variations to phosphorous,photosystem II activity and polar metabolite abundance in needles were noted among clones.Clone EH5 was the most P-responsive and had maximum height growth.The highest maximum quantum yield of PSII in the dark(F_(v)/F_(m)),maximum quantum yield of PSII in the light(F_(v)'/F_(m)')and the actual PSII efficiency(Φ_(PSII))values were also found in EH5.A total of 64 polar metabolites were identified,21 were regulated by phosphorous,while 28 accumulated differentially among the three clones.There were few overlapping responsive metabolites to phosphorous fertilization.In EH5,the abundance of maltotriitol,neohesperidin and raffinose were highest,whereas galactinol and shikimic acid were lower compared with EH3 and EH4.The results reveal that physiological traits were genetically controlled and might be useful for selecting clones with high phosphorous utilization efficiency. 展开更多
关键词 Carbohydrates Chlorophyll fuorescence parameters Metabolic profiling Phosphorus fertilization physiological traits
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Effects of nutrient solution irrigation quantity and powdery mildew infection on the growth and physiological parameters of greenhouse cucumbers
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作者 Hanping Mao Yafei Wang +2 位作者 Ning Yang Yong Liu Xiaodong Zhang 《International Journal of Agricultural and Biological Engineering》 SCIE CAS 2022年第2期68-74,共7页
For important economic crops such as cucumbers,abiotic and biotic stress conditions have had an adverse effect.This study aimed to observe the effects of water stress and powdery mildew stress on cucumber plants.Bioti... For important economic crops such as cucumbers,abiotic and biotic stress conditions have had an adverse effect.This study aimed to observe the effects of water stress and powdery mildew stress on cucumber plants.Biotic stress at two levels,B0(no powdery mildew stress)and B1(powdery mildew stress)with three fertigation requirement levels(T1:Full fertigation,T2:Moderate nutrient solution deficit,T3:Severe nutrient solution deficit).Therefore,set up six treatments of B0T1,B1T2,B0T3,B1T1,B1T2,and B1T3.Leaf gas-exchange parameter first decreases and then increases under B1T1,B1T2,and B1T2.The leaf gas exchange parameter was significantly decreased under B0T2 and B0T3.Compared to the control experiment(CK,B0T1:no disease infestation and full irrigation),the plant height of cucumber decreased by 7.55%,10.62%,15.28%,23.27%,and 35.16%,respectively,under B0T2,B0T3,B1T1,B1T2 and B1T3;the stem diameter of cucumber decreased by 9.46%,15.74%,5.47%,13.45%,and 23.72%,respectively,under B0T2,B0T3,B1T1,B1T2,and B1T3;the leaf area of cucumber decreased by 13.76%,29.96%,13.43%,38.21%,and 66.83%,respectively,under B0T2,B0T3,B1T1,B1T2,and B1T3.The root-shoot ratio of cucumber was 3.92%,3.13%,3.63%,3.84%,4.41%,and 3.82%,respectively,under the B0T1,B0T2,B0T3,B1T1,B1T2,and B1T3.Therefore,this study can provide a basis for the research on greenhouse environmental control and cucumber cultivation management. 展开更多
关键词 GREENHOUSE CUCUMBER powdery mildew nutrient solution drought stress growth traits physiological traits
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Crown and leaf traits as predictors of subtropical tree sapling growth rates 被引量:20
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作者 Ying Li Wenzel Kröber +2 位作者 Helge Bruelheide Werner Härdtle Goddert von Oheimb 《Journal of Plant Ecology》 SCIE CSCD 2017年第1期136-145,共10页
Aims Growth rates of plants are driven by factors that influence the amount of resources captured and the efficiency of resource use.In trees,the amount of light captured and the efficiency of light use strongly depen... Aims Growth rates of plants are driven by factors that influence the amount of resources captured and the efficiency of resource use.In trees,the amount of light captured and the efficiency of light use strongly depends on crown characteristics and leaf traits.Although theory predicts that both crown and leaf traits affect tree growth,few studies have yet to integrate these two types of traits to explain species-specific growth rates.Using 37 broad-leaved tree species of subtropical forests in SE China,we investigated how interspecific differences in wood volume growth rates were affected by crown and leaf traits.We tested the hypotheses that(i)larger crown dimensions promote growth rates,(ii)species-specific growth rates are positively related to leaf stomatal conductance,leaf water potential and leaf chemical components,and negatively related to leaf C/N and leaf toughness and(iii)the two sets of traits better explain growth rates in combination than either alone.Methods Our study was conducted in a large-scale forest Biodiversity and Ecosystem Functioning experiment in China(BEF-China),located in a mountainous region in Jiangxi Province.We related 17 functional traits(two crown dimension and three crown structure traits;six physiological and six morphological leaf traits)to the mean annual growth rate of wood volume of young trees of the studied species.Interrelationships between crown and leaf traits were analyzed using principal component analysis.Simple linear regression analysis was used to test the effect of each trait separately.We used multiple regression analysis to establish the relationship of growth rate to each set of traits(crown traits,physiological and morphological leaf traits)and to the combination of all types of traits.The coefficients of determination(R^(2)_(adj))of the best multiple regression models were compared to determine the relative explanatory power of crown and leaf traits and a combination of both.Important Findings The species-specific growth rates were not related to any of the single crown traits,but were related positively to leaf stomatal conductance and leaf water potential individually,and negatively to leaf toughness,with approximately 13%variance explained by each of the traits.Combinations of different crown traits did not significantly explain the species-specific growth rates,whereas combinations of either physiological or morphological leaf traits explained 24%and 31%,respectively.A combination of both crown and leaf traits explained 42%of variance in species-specific growth rates.We concluded that sets of traits related to carbon assimilation at the leaf-level and to overall amount of leaves exposed at the crown-level jointly explained species-specific growth rates better than either set of traits alone. 展开更多
关键词 BEF China crown characteristics physiological leaf traits morphological leaf traits wood volume
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CO2 Exchange and Chlorophyll Fluorescence of Phosphoenolpyruvate Carboxylase Transgenic Rice Pollen Lines 被引量:4
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作者 Li-Li Ling Hong-Hui Lin +1 位作者 Ben-Hua Ji De-Mao Jiao 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2006年第12期1431-1438,共8页
To elucidate the photosynthetic physiological characteristics and the physiological inherited traits of rice (Oryza sativa L.) hybrids and their parents, physiological indices of photosynthetic CO2 exchange and chlo... To elucidate the photosynthetic physiological characteristics and the physiological inherited traits of rice (Oryza sativa L.) hybrids and their parents, physiological indices of photosynthetic CO2 exchange and chlorophyll fluorescence parameters were measured in leaves of the maize phosphoenolpyruvate carboxylase (PEPC) transgenic rice as the male parent, sp. japonica rice cv. 9516 as the female parent, and the stable JAAS45 pollen line. The results revealed that the PEPC gene could be stably inherited and trans- ferred from the male parent to the JAAS45 pollen line. Moreover, the JAAS45 pollen line exhibited high levels of PEPC activity, manifesting higher saturated photosynthetic rates, photosynthetic apparent quantum yield (AQY), photochemical efficiency of photosystem II and photochemical and non-photochemical quenching, which indicated that the JAAS45 pollen line has a high tolerance to photo-inhibition/photooxidation under strong light and high temperature. Furthermore, JAAS45 was confirmed to still be a C3 plant by δ^13C carbon isotope determination and was demonstrated to have a limited photosynthetic C4 microcycle by feeding with exogenous C4 primary products, such as oxaloacetate or malate, or phosphoenolpyruvate. The present study explains the physiological inherited properties of PEPC transgenic rice and provides an expectation for the integration of traditional breeding and biological technology. 展开更多
关键词 anther culture phosphoenolpyruvate carboxylase (PEPC) physiological inherited trait rice hybrid transgenic rice
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