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Effects of Different Seasons on Cutting Propagation of Five Citrus Rootstocks
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作者 Liying GUO Yun CHEN +5 位作者 Meiling LI Yilin CHEN Wenwen HUANG Yuanmeng YU Guochan HUANG Qianhua JI 《Asian Agricultural Research》 2024年第11期29-35,43,共8页
[Objectives]To explore the cutting propagation mode of citrus rootstock,improve the survival rooting rate of citrus rootstock,and provide theoretical guidance and technical reference for the rooting research of diffic... [Objectives]To explore the cutting propagation mode of citrus rootstock,improve the survival rooting rate of citrus rootstock,and provide theoretical guidance and technical reference for the rooting research of difficult-to-root plants such as citrus.[Methods]Five citrus rootstocks Citrus tangerina Tanaka‘Hongju’,Citrus haniana Hort‘Suanju’,Citrus limonia Osbeck‘Hongningmeng’,Citrus sinensis×Poncirus trifoliata‘Zhicheng’and Poncirus trifoliate(L)Raf.‘Zhike’were used as experimental materials to select the suitable cutting substrate for citrus rootstocks by measuring the physical properties of the substrate.Cutting was carried out in spring,summer,autumn and winter respectively.After cutting,the morphological changes of cuttings were observed regularly,and the callus rate,germination rate and rooting rate of cuttings were recorded.[Results]The best substrate for citrus rootstock cutting was peat soil,vermiculite and fine river sand(2:1:1).The callus of citrus rootstock in different cutting seasons began to appear in 10-22 d,and the callus rate reached 55%-100%.In terms of budding,the budding time was the earliest in summer and autumn,and slightly later in spring and winter;the germination rate of C.limonia Osbeck‘Hongningmeng’was the highest,and the germination rate of C.sinensis×P.trifoliata‘Zhicheng’and P.trifoliate(L)Raf.‘Zhike’was lower;in terms of rooting,C.limonia Osbeck‘Hongningmeng’had the earliest rooting time and the highest rooting rate and could reach 100%in all seasons;the rooting rate of C.tangerina Tanaka‘Hongju’was 50%-80%;the rooting rate of C.haniana Hort‘Suanju’was 60%-80%;C.sinensis×P.trifoliata‘Zhicheng’and P.trifoliate(L)Raf.‘Zhike’showed the earliest rooting time and the highest rooting rate in summer,and the latest rooting time and the lowest rooting rate in winter,which were only 14.5%.Therefore,different citrus rootstock varieties should choose the appropriate cutting time according to their own characteristics.[Conclusions]The results of this study can provide a scientific basis for a large number of cutting propagation of different citrus rootstocks,and have practical guiding significance for large-scale planting. 展开更多
关键词 CITRUS Cutting propagation rooting rate VARIETIES
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The type, position and age effect on the cutting reproduction of Picea crassifolia and its rooting mechanism in the Qilian Mountains 被引量:6
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作者 Jianjun Kang Wenzhi Zhao +3 位作者 Ming Zhao Guangyu Li Jiqiang Zhang Zhisheng Zhang 《Journal of Forestry Research》 SCIE CAS CSCD 2015年第4期993-1002,共10页
Picea crassifolia Kom, a perennial arbor spe- cies is recognized as one of the most adaptable plants found to date in Qilian Mountains. To explore the cutting reproduction technology of P. crassifolia and reveal its r... Picea crassifolia Kom, a perennial arbor spe- cies is recognized as one of the most adaptable plants found to date in Qilian Mountains. To explore the cutting reproduction technology of P. crassifolia and reveal its rooting mechanism, cuttings of P. crassifolia with different cutting types (softwood, hardwood and root), positions (top, upper, middle and bottom) and ages (7, 10, 15, 20, 25 year-old) were cultivated in a field experiment. One- year old softwood and hardwood cuttings were collected from 7-, 10-, 15-, 20-, and 25 year-old healthy ortets to analyze the changes from endogenous hormones and organic nutrients. Results indicate that the softwood cut- tings (0.5-1.0 cm in diameter) from upper branches of 15 year-old ortets shows better growth performance by improving rooting indexes, including a significant increasein rooting rate and a decrease in basal rot rate. Concomi- tantly, increasing rooting quantity and root length also increased. It is noteworthy that the high rooting rate of P. crassifolia cuttings due to its ability to accumulate high concentrations of indole-3-acetic acid (IAA) and total carbon (TC) rather than abscisic acid (ABA) and total nitrogen (TN). The rooting rate was mainly regulated by the IAA/ABA and TC/TN ratio. In summary, our results suggest that the softwood cuttings (0.5-1.0 cm in diameter) from upper branches of 15 year-old P. crassifolia can be considered as an effective strategy to improve cutting rooting rate, and the IAA/ABA and TC/TN ratio was one of the main factors limiting the cutting rooting rate of P. crassifolia. 展开更多
关键词 Picea crassifolia Kom TYPE Positionand age effect Cutting reproduction rooting rate HORMONES Organic substances
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Tissue Culture of Toona ciliata 被引量:1
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作者 廖德志 吴际友 +5 位作者 舒瑶 程勇 陈明皋 陈家法 刘球 吴哲 《Agricultural Science & Technology》 CAS 2017年第11期2185-2187,2196,共4页
In this study, a screening experiment was carried out among MS, WPM, DCR, MT, B5 and N6. The results showed that for proliferation culture of Toona ciliate, the optimum basic medium was WPM, and the optimum medium was... In this study, a screening experiment was carried out among MS, WPM, DCR, MT, B5 and N6. The results showed that for proliferation culture of Toona ciliate, the optimum basic medium was WPM, and the optimum medium was WPM + 6-BA 0.5 mg/L + IBA 0.05 mg/L. The proliferation coefficient reached 4.29. The optimum rooting culture medium was 1/2 MS + IBA 0.5 mg/L + NAA 0.5 mg/L with rooting rate of 100%. In the optimum rooting 'culture medium, the roots of T. ciliate developed neatly, and the seedlings grew well. 展开更多
关键词 Toona ciliate MEDIUM rooting rate Tissue culture
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Study on Cutting Propagation of Toona ciliata Clones 被引量:4
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作者 吴际友 程勇 +5 位作者 吴其军 陈明皋 李艳 黄明军 王旭军 刘球 《Agricultural Science & Technology》 CAS 2014年第11期1844-1846,共3页
Cutting propagation rhizogenesis of Toona ciliata clone cutting orchard were studied, and the results were as fol ows: Rooting type included both cal us rooting and cortex rooting. About 17 in 22 of clones were domin... Cutting propagation rhizogenesis of Toona ciliata clone cutting orchard were studied, and the results were as fol ows: Rooting type included both cal us rooting and cortex rooting. About 17 in 22 of clones were dominated by cortex rooting, accounting for the 77% of clones. There were 5 clones which occurred with both cal us rooting and cortex rooting during rooting process. The rooting efficiency index (REI) showed a positive correlation with the rooting rate. Under natural tem-perature condition, keeping moisture and shading, we found that the highest survival rate occurred in early June, September, and October. 展开更多
关键词 Toona ciliata clones Cutting propagation rooting rate
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Screening and Breeding of Sweetpotato Varieties Suitable for Mechanical Harvesting
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作者 唐维 张允刚 +5 位作者 李强 后猛 王欣 闫会 马代夫 刘亚菊 《Agricultural Science & Technology》 CAS 2017年第6期971-974,共4页
The lower degree of mechanical harvesting is a bottleneck hindering the healthy development of sweetpotato industry in China, while the mismatching be- tween agricultural machinery and agronomy is one of the main fact... The lower degree of mechanical harvesting is a bottleneck hindering the healthy development of sweetpotato industry in China, while the mismatching be- tween agricultural machinery and agronomy is one of the main factors for poor me- chani.cal harvesting. In this study, total five sweetpotato varieties were selected, and the effects of different shapes and sizes on mechanical harvesting of sweetpotato were investigated. The results showed that the breakage rate of Xuzishu 5 was lowest, so it is more suitable for mechanical harvesting in field. At the same time, the correlations between sweetpotato shape, breakage rate and exposure rate were analyzed. It was found that there was a significant linear correlation between sweet- potato shape and breakage rate (P〈0.01); the higher the flat rate is, the higher the breakage rate is; and sweetpotato shape had no significant effect on exposure rate. Therefore, tuberous root with lower flat rate, as well as better agronomic characters should be selected in the breeding process of new sweetpotato varieties. 展开更多
关键词 SWEETPOTATO Mechanical harvesting Flat rate of tuberous root Break- age rate Exposure rate
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Advances in Research of Cutting Breeding Technology of Xanthoceras sorbifolium Bunge
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作者 Tao LIU Mei YU +5 位作者 Lei WANG Dan WU Xiaoman XIE Zhen WANG Xueyong ZHANG Yongjun ZHAO 《Asian Agricultural Research》 2020年第6期43-48,52,共7页
Cutting breeding is an important method of asexual reproduction of Xanthoceras sorbifolium Bunge.At present,it has been found that the factors influencing the cuttings of X.sorbifolium mainly include cutting material ... Cutting breeding is an important method of asexual reproduction of Xanthoceras sorbifolium Bunge.At present,it has been found that the factors influencing the cuttings of X.sorbifolium mainly include cutting material type,substrate type,cutting season,cutting material length and thickness,mother tree age,cutting material pretreatment method,hormone species concentration and soaking time.Besides,different regions,control conditions,and germplasm types have different cutting rooting rates.This paper introduced some of the problems in the cuttings of X.sorbifolium,and came up with some recommendations to provide a reference for the future research and technical promotion of X.sorbifolium cuttings. 展开更多
关键词 Xanthoceras sorbifolium Bunge CUTTING rooting rate Asexual reproduction Research advances
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Study on the Cutting Propagation Technique of Rubus spp. Raspberry
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作者 姚颖 吕跃东 +2 位作者 郭树平 刘建明 刘忠玲 《Agricultural Science & Technology》 CAS 2016年第2期341-343,共3页
[Objective] The research aimed to study the effects of different matrices and hormones on the rooting rate of Rubus spp. Raspberry. [Method] Different ma- trices and different hormones with different concentrations we... [Objective] The research aimed to study the effects of different matrices and hormones on the rooting rate of Rubus spp. Raspberry. [Method] Different ma- trices and different hormones with different concentrations were adopted to design completely randomized block test, thus to conduct cutting experiment of Rubus spp. Raspberry, in order to discuss the effects of different matrices and hormones on the rooting rate of Rubus spp. Raspberry. [Result] The rooting rate was significantly af- fected by different hormones and matrices, whereas the effect of hormone concen- tration was not significant. The suitable combination was 200 mg/kg ABT + river sand. The effect of growth hormone on hard wood cutting of Rubus spp. Raspberry in river sand was not significant. [Conclusion] This test can provide a reference for the industrialized seedling production of Rubus spp. Raspberry. 展开更多
关键词 Rubus spp. Raspberry Cutting propagation rooting rate
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Root Physiological and Morphological Characteristics of Two Rice Cultivars with Different Nitrogen-Use Efficiency 被引量:35
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作者 FAN Jian-Bo ZHANG Ya-Li +3 位作者 D. TURNER DUAN Yin-Hua WANG Dong-Sheng SHEN Qi-Rong 《Pedosphere》 SCIE CAS CSCD 2010年第4期446-455,共10页
The variation in nitrogen (N) uptake by rice has been widely studied but differences in rice root morphology that may contribute to this variation are not completely understood. Field and greenhouse experiments were... The variation in nitrogen (N) uptake by rice has been widely studied but differences in rice root morphology that may contribute to this variation are not completely understood. Field and greenhouse experiments were carried out to study N accumulation, root dry weights, total root lengths, root surface areas, and root bleeding rates of two rice cultivars, Elio with low N-use efficiency and Nanguang with high N-use efficiency. Low (1 mmol N L^-1) and high (5 mmol N L^-1) N applications were established in the greenhouse experiment, and the N rates were 0, 120, and 240 kg ha^-1 in the field experiments at Jiangning and Jiangpu farms, Nanjing, China. The results showed that the N accumulation, root dry weight, total root length, and root surface area increased with an increase in N application. At the heading stage, N accumulation in the shoots and roots of Nanguang was greater than that of Elio in the field experiments and that of Elio at 5 mmol N L^-1 in the greenhouse experiment. After the heading stage, N accumulation was higher for Nanguang at both 1 and 5 mmol N L^-1 in the greenhouse experiment. The total root length and root surface area were significantly different between the two cultivars. Over the range of the fertilizer application rates, the root lengths of Nanguang at Jiangning Farm were 49%-6170 greater at booting and 26%-39% greater at heading than those of Elio, and at Jiangpu Farm they were 22%-42% and 26%-38% greater, respectively. Nanguang had a greater root bleeding rate than Elio. It was concluded that the N-use efficiency of the two rice cultivars studied depended to a great extent on the root morphological parameters and root physiological characteristics at different growth stages. 展开更多
关键词 N accumulation root bleeding rate root dry weight root surface area total root length
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A comparison on the phytoremediation ability of triazophos by different macrophytes 被引量:2
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作者 Zhu Li Huiping Xiao +3 位作者 Shuiping Cheng Liping Zhang Xiaolong Xie Zhenbin Wu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2014年第2期315-322,共8页
The strategy of choosing suitable plants should receive great performance in phytoremediation of surface water polluted by triazophos (O,O-diethyl-O-(1-phenyl- 1,2,4-triazol-3-base) sulfur phosphate, TAP), which i... The strategy of choosing suitable plants should receive great performance in phytoremediation of surface water polluted by triazophos (O,O-diethyl-O-(1-phenyl- 1,2,4-triazol-3-base) sulfur phosphate, TAP), which is an organophosphorus pesticide widespread applied for agriculture in China and moderately toxic to higher animal and fish. The tolerance, uptake, transformation and removal of TAP by twelve species of macrophytes were examined in a hydroponic system and a comprehensive score (CS) of five parameters (relative growth rate (RGR), biomass, root/shoot ratio, removal capacity (RC), and bio-concentration factor (BCF)) by factor analysis was employed to screen the potential macrophyte species for TAP phytoremediation. The results showed that Thalia dealbata, Cyperus alternifolius, Canna indica and Acorus calamus had higher RGR values, indicating these four species having stronger growth capacity under TAP stress. The higher RC loading in Iris pseudacorus and Cyperus rotundus were 42.11 and 24.63μg/(g fw.day), respectively. The highest values of BCF occurred in A. calamus (1.17), and TF occurred in Eichhornia crassipes (2.14). Biomass and root/shoot ratio of plant showed significant positive correlation with first-order kinetic constant of TAP removal in the hydroponic system, indicating that plant biomass and root system play important roles in remediation of TAP. Five plant species including C. alternifolius, A. calamus, T. dealbata, C. indica and Typha orientalis, which owned higher CS, would be potential species for TAP phytoremediation of contaminated water bodies. 展开更多
关键词 pesticide removal capacity relative growth rate bio-concentration factor transfer factor root/shoot ratio factor analysis
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Mind the gap among patches in arid plant communities:rapid root proliferation in response to N addition
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作者 Maria Fernanda Reyes Martín RAguiar 《Journal of Plant Ecology》 SCIE CSCD 2019年第1期89-95,共7页
Aims In arid communities,it has been proposed that individual plants can extend their roots beyond their canopy exploring neighbour-ing bare ground areas.This becomes relevant in systems where the vegetation is distri... Aims In arid communities,it has been proposed that individual plants can extend their roots beyond their canopy exploring neighbour-ing bare ground areas.This becomes relevant in systems where the vegetation is distributed in patches surrounded by bare soil.However,whether roots of different species may be overlapping under bare ground areas is still controversial.The factors control-ling root responses when no plants appear to be directly influ-encing the gap among patches are still unclear.The aim of our study was to detect perennial grasses responses to an N enrich-ment pulse.Methods In a semi-arid steppe(Patagonia,Argentina),we buried root traps filled with sieved soil with and without N addition,under bare soil patches.Traps were harvested after 4 and 6 months.Trap neighbour-hoods(30 cm in diameter)included at least three of the dominant tussock species.After harvests,we identified species in the traps by root traits and quantified diversity,biomass and specific relative growth rates.Important Findings Bare ground areas show simultaneous root growth of different spe-cies.Diversity of perennial grass roots was higher with N addition than without it in the first harvest(4 months),but this difference disappeared in the second harvest(6 months).Root biomass was maximal after 6 months in N addition traps.Species preferred by herbivores(Bromus pictus and Poa ligularis)showed rapid growth and responses to N addition.Differences between harvests may be an indicative that N pulses interact with rising temperatures and soil water content as growing season progress. 展开更多
关键词 belowground community ecology grass species roots Patagonian steppe PATCHINESS root growth rates zone of influence
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