期刊文献+
共找到135篇文章
< 1 2 7 >
每页显示 20 50 100
The Yield and Diseases-Pest Performance of Breeding Materials for Tomatoes (Lycopersicon esculentum) Sourced from Different Exotic Sources
1
作者 Akm Quamruzzaman Limu Akter 《American Journal of Plant Sciences》 CAS 2024年第9期766-776,共11页
A study was conducted with 36 tomato germplasm [PGRC (19), The Netherlands (7), Japan (2), and Bangladesh (9)] with 3 check varieties in the research field of the Olericulture Division of Horticulture Research Centre ... A study was conducted with 36 tomato germplasm [PGRC (19), The Netherlands (7), Japan (2), and Bangladesh (9)] with 3 check varieties in the research field of the Olericulture Division of Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during the winter season of 2022-23 to identify promising tomato breeding germplasm. All the germplasm showed differences in most of the parameters studied. Considerable variation was observed for fruit yield per hectare varied from 39 to 144 tons, while the highest fruit yield per hectare was harvested from the germplasm viz., BD 7759B, BD 7757, BD 7751, BD 7301, QM, BD 7759A, BD 7762, QF, BD 7753, BD 8886, BD 10351, NL-1A, SLA-19. The number of locules, total soluble solids (TSS) and plant height at last harvest varied from 2 to 6.6, 2.6 to 5.9%, and 66 to 154cm, respectively. The TYLCV infection (%) and leaf-sucking pest infestation (%) were observed with a 1 to 20% range in the field condition in both cases. So, we can select that germplasm has zero per cent infestation. Considering the plant growth habit, earliness, different yield contributing horticultural traits, virus and pest infestation thirteen germplasm viz., BD 7759B, BD 7757, BD 7751, BD 7301, QM, BD 7759A, BD 7762, QF, BD 7753, BD 8886, BD 10351, NL-1A, SLA-19 were selected as breeding materials for further tomato improvement program. 展开更多
关键词 lycopersicon esculentum tomato TYlCV leaf-Sucking Pest Fruit Yield
下载PDF
Yield and Pest Performance of High-Temperature Tolerant Tomato (Lycopersicon esculentum) Lines for Year-Round Tomato Production in Bangladesh
2
作者 Akm Quamruzzaman Limu Akter Ferdouse Islam 《Agricultural Sciences》 2023年第7期855-863,共9页
The study was conducted at Olericulture Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh during summer season of 2021 to see the performances of yield and yield-related components of twelve he... The study was conducted at Olericulture Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh during summer season of 2021 to see the performances of yield and yield-related components of twelve heat tolerant tomato hybrids. Significant variation was expressed for days to first harvest (101.0 - 108.0 days), while maximum number of fruits per plant was calculated in F<sub>1</sub> 2101 and F<sub>1</sub> 2201 (9.5), followed by F<sub>1</sub> 203, F1 2001, F<sub>1</sub> 2303, F<sub>1</sub> 2401 (9.0). The highest single fruit weight was estimated in F<sub>1</sub> 2501 (195.5 g), followed by F<sub>1</sub> 2101 (119.0 g), F<sub>1</sub> 2201 (113.8 g), while the range was 33.1 - 195.5 g. The range of fruit yield was 7.9 - 38.7 t/ha, while higher-yielding hybrids were viz., F<sub>1</sub> 203 (27.7 t/ha), F<sub>1</sub> 2101 (35.5 t/ha), F<sub>1</sub> 2201 (33.9 t/ha) and F<sub>1</sub> 2501 (28.7 t/ha). Maximum TSS was produced by F<sub>1 </sub>2501 (5.9%), followed by BARI Hybrid Tomato-8 (5.1%), F<sub>1</sub> 1101, F<sub>1</sub> 1903 (5.0%), with a range of 4.0% - 5.9%, while TYLCV infection and leaf sucking pest infestation varied from 0.0% - 10.0% and 3.3% - 16.7%, respectively. Thus, based on the performances of different yield and yield contributing traits, the hybrids, viz., F<sub>1</sub> 2101, F<sub>1 </sub>2201, F<sub>1 </sub>2501 may be selected to develop heat tolerant tomato hybrid varieties for the farmers of sub-tropical regions. 展开更多
关键词 lycopersicon esculentum tomato Hybrids HETEROSIS Sub-Tropical
下载PDF
Microclimate modification using eco-friendly nets and floating row covers improves tomato (<i>Lycopersicon esculentum</i>) yield and quality for small holder farmers in East Africa 被引量:1
3
作者 Mwanarusi Saidi Elisha O. Gogo +2 位作者 Francis M. Itulya Thibaud Martin Mathieu Ngouajio 《Agricultural Sciences》 2013年第11期577-584,共8页
Tomato (Lycopersicon esculentum) is one of the important vegetables in supplying vitamins, minerals and fiber to human diets worldwide. Its successful production in the tropics is, however, constrained by environmenta... Tomato (Lycopersicon esculentum) is one of the important vegetables in supplying vitamins, minerals and fiber to human diets worldwide. Its successful production in the tropics is, however, constrained by environmental variations especially under open field conditions. Two trials were conducted at the Horticulture Research and Teaching Field, Egerton University, Kenya to evaluate the effects of agricultural nets (agronets) herein called eco-friendly nets (EFNs) and floating row covers (FRCs) on microclimate modification, yield, and quality of tomato. A randomized complete block design with five replications was used. Tomato plants were grown under fine mesh EFN (0.4-mm pore diameter) cover, large mesh EFN (0.9-mm pore diameter) cover or FRC. The EFN and FRC were maintained either permanently closed or opened thrice a week from 9 am to 3 pm. Two open control treatments were used: unsprayed (untreated control) or sprayed with chemicals (treated control). The use of EFN or FRC modified the microclimate with higher temperatures, lower diurnal temperature ranges, and higher volumetric water content recorded compared with the controls. On the other hand, light quantity and photosynthetic active radiation were reduced by the use of EFN and FRC compared with the controls. The use of FRC and EFN resulted in more fruit and higher percent in marketable yield compared with open field production. Fruit quality at harvest was also significantly improved by the use of EFN and FRC. Fruits with higher total soluble solids (TSS), lower titratable acidity (TA), and higher sugar acid ratio were obtained in EFN and FRC treatments compared with the controls. Fruits harvested from EFN and FRC were also firmer compared with control fruits. These findings demonstrate the potential of EFN and FRC in modifying microclimate conditions and improving yields and quality of tomato under tropical field conditions. 展开更多
关键词 lycopersicon esculentum Solanum lycopersicum MICROClIMATE MODIFICATION Protected Cropping tomato Yields tomato Quality
下载PDF
The Effect of Water Hyacinth (<i>Eichhornia crassipes</i>) Compost on Tomato (<i>Lycopersicon esculentum</i>) Growth Attributes, Yield Potential and Heavy Metal Levels
4
作者 Martin Mashavira Tavengwa Chitata +3 位作者 Rangarirai Lucia Mhindu Simbarashe Muzemu Arnold Kapenzi Pepukai Manjeru 《American Journal of Plant Sciences》 2015年第4期545-553,共9页
The potential of different water hyacinth compost application rates in influencing growth attributes, yield and heavy metal accumulation of lead (Pb), copper (Cu), nickel (Ni) and zinc (Zn) in tomato fruit was studied... The potential of different water hyacinth compost application rates in influencing growth attributes, yield and heavy metal accumulation of lead (Pb), copper (Cu), nickel (Ni) and zinc (Zn) in tomato fruit was studied in Masvingo. Four treatments of water hyacinth compost rates of 0, 37, 55.6 and 74.1 t·ha-1 were each replicated three times and applied in a randomized complete block design set up. Results showed that water hyacinth compost application rates significantly affected plant height, days to maturity and yield but had no influence on the number of tomato fruits per plant. The plant height at application rate of 74.1 t·ha-1 was 25%, 56% and 63% higher than the control at week 6, 9 and 12, respectively. At application rates of 56.6 t·ha-1, plant heights were 11%, 13% and 12% higher than the control whilst marginal plant height differences of -4%, 6% and 4% were recorded between application rate of 34.7 t·ha-1 and the control at week 6, 9 and 12, respectively. Tomato plants under compost rates of 34.7, 56.6 and 74.1 t·ha-1 in comparison to the control delayed maturity by 10, 17 and 20 days, respectively. Yields of 52, 55, 60 and 68 t·ha-1 were realized from hyacinth compost rates of 0, 34.7, 56.6 and 74.1 t·ha-1, respectively. Heavy metal concentrations increased with increase in the water hyacinth compost rate but at all application rates, the average concentrations were 85%, 93% and 86% lower than the Codex Alimentarious Commission permissible levels for Pb, Cu and Zn. Water hyacinth compost at a rate of 74 t·ha-1 therefore can be used for increased tomato yield without exposing consumers to heavy metal toxicity. 展开更多
关键词 Heavy Metal Concentration lycopersicon esculentum Water Hyacinth COMPOST tomato Production
下载PDF
外源NO与蔗糖对盐胁迫下番茄(Lycopersicon esculentum Mill)幼苗氧化损伤的保护效应 被引量:25
5
作者 苏桐 魏小红 +1 位作者 丁学智 李源 《生态学报》 CAS CSCD 北大核心 2008年第4期1558-1564,共7页
选取长至6~8片真叶的健康番茄(Lycopersicon esculentum Mill)幼苗,分别进行蔗糖、硝普钠(sodium nitropresside,SNP,作为外源NO供体)及其体积比例组合(1∶1)处理;36h后施以NaCl胁迫,并分别于0h(胁迫前)、24h、48h和72h取样,... 选取长至6~8片真叶的健康番茄(Lycopersicon esculentum Mill)幼苗,分别进行蔗糖、硝普钠(sodium nitropresside,SNP,作为外源NO供体)及其体积比例组合(1∶1)处理;36h后施以NaCl胁迫,并分别于0h(胁迫前)、24h、48h和72h取样,进行相关生理生化指标测定。具体5个实验处理如下:A.蒸馏水(CK);B.100 mmol/L NaCl;C.0.1 mmol/L SNP+100 mmol/L NaCl;D.0.1 mmol/L SNP+1.0mmol/L蔗糖+100 mmol/L NaCl;E.1.0 mmol/L蔗糖+100 mmol/L NaCl。结果表明:与SNP和蔗糖单独处理相比,二者组合处理对缓解盐胁迫下番茄幼苗的氧化损伤存在正协同效应,主要表现在进一步增强了番茄幼苗超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)和谷胱甘肽还原酶(GR)的活性;提高了脯氨酸(Pro)的含量,同时膜脂过氧化产物丙二醛(MDA)含量显著降低(P〈0.05)。采用聚丙烯酰胺浓度梯度凝胶电泳对盐胁迫24 h和48 h材料的POD同功酶检测表明,当NaCl单独处理时,番茄幼苗叶片POD同功酶第V条带缺失,其它谱带酶量减少,抑制了POD同功酶的表达;SNP和蔗糖单独处理能够保护盐胁迫(24、48h)所导致的POD同功酶条带的完整;而组合处理既保证了POD同功酶条带的完整,又加强了酶量的表达。随着盐胁迫时间的延长,其氧化损伤程度愈烈,SNP和蔗糖组合处理能够更有效地缓解盐胁迫对番茄幼苗植株造成的氧化损伤。 展开更多
关键词 一氧化氮 蔗糖 番茄(lycopersicon esculentum Mill)幼苗 NaCl胁迫 氧化损伤
下载PDF
盐胁迫对番茄幼苗(Lycopersicon esculentum L.)抗氧化酶活性和同工酶的影响(英文) 被引量:3
6
作者 王维香 汪晓峰 严庆海 《四川农业大学学报》 CSCD 北大核心 2013年第2期169-175,共7页
【目的】研究盐胁迫对番茄幼苗抗氧化酶活性和同工酶的影响。【方法】以番茄(Lycopersicon esculentum L.)F144种子为材料,种子萌发2d后用120mmol/L NaCl处理7d,测定幼苗谷胱甘肽还原酶(GR),谷胱甘肽过氧化物酶(GPX),过氧化氢酶(CAT),... 【目的】研究盐胁迫对番茄幼苗抗氧化酶活性和同工酶的影响。【方法】以番茄(Lycopersicon esculentum L.)F144种子为材料,种子萌发2d后用120mmol/L NaCl处理7d,测定幼苗谷胱甘肽还原酶(GR),谷胱甘肽过氧化物酶(GPX),过氧化氢酶(CAT),超氧化物歧化酶(SOD)和抗坏血酸过氧化物酶(APX)的活性以及同工酶。【结果】在120mmol/L NaCl作用下,CAT和APX活性显著提高,GR和GPX活性提高不显著,而SOD活性无显著变化。SDS-PAGE分析发现,番茄幼苗叶中的GR有两条同工酶,分子量分别为50kDa和46kDa,GPX有3条同工酶,分子量分别为60、50和48kDa,CAT有两条主要的同工酶,APX有3条主要同工酶,SOD有3条同工酶;在120mmol/L NaCl作用下,GR中分子量为46kDa的同工酶消失,GPX中的48kDa和60kDa同工酶受到显著抑制,CATⅠ、CATⅡ和APXⅡ增强,而SOD的同工酶没有变化。【结论】CAT和APX是主要的盐胁迫抗氧化清除剂。 展开更多
关键词 盐胁迫 抗氧化酶 番茄
下载PDF
花青苷对低温弱光处理的番茄(L.esculentum Mill.)幼苗光合机构的保护作用 被引量:14
7
作者 陈静 陈启林 +1 位作者 程智慧 徐春和 《中国农业科学》 CAS CSCD 北大核心 2007年第4期788-793,共6页
【目的】探索幼苗叶片花青苷对低温弱光处理的番茄幼苗的光合作用是否具有保护作用。【方法】利用硫灯和氙灯下生长的番茄幼苗真叶之间以及野生型(WT)和光敏素双突变体(phyB1phyB2)幼苗真叶之间花青苷含量的差异,以叶绿素荧光为指标,研... 【目的】探索幼苗叶片花青苷对低温弱光处理的番茄幼苗的光合作用是否具有保护作用。【方法】利用硫灯和氙灯下生长的番茄幼苗真叶之间以及野生型(WT)和光敏素双突变体(phyB1phyB2)幼苗真叶之间花青苷含量的差异,以叶绿素荧光为指标,研究花青苷对低温弱光处理的番茄幼苗叶片光合荧光变化的影响。【结果】低温弱光(2oC,100μmol photons·m-2·s-1)对番茄幼苗叶片PSⅡ具有显著的抑制作用,但是对PSI活性影响不大。低温弱光处理硫灯和氙灯下的番茄幼苗及硫灯下的WT和突变体番茄幼苗3h后,硫灯下富含花青苷的番茄PSⅡ光化学效率Fv/Fm降低到处理前的76.3%,氙灯下的降低到63.3%;能合成花青苷的WT的Fv/Fm降低到处理前的64.3%左右,而不能合成花青苷的phyB1phyB2降低到处理前的53.7%;下降程度显著高于WT。在番茄幼苗叶片不能合成花青苷后,分别生长在硫灯和氙灯下的番茄植株叶片在经过低温弱光处理3h后,叶片的PSⅡ光化学效率Fv/Fm的变化幅度没有显著的差别;同样,硫灯下WT和phyB1phyB2植株之间也没有显著差别。【结论】花青苷对低温弱光逆境处理的番茄叶片的光合机构具有保护作用,这种保护作用极可能与花青素对可见光和紫外光的吸收和屏蔽作用有关。 展开更多
关键词 番茄 花青苷 低温弱光 光合作用
下载PDF
Effect of Low Night Temperature Treatment on Sucrose Synthesis Ability of Tomato Leaves in Seedling Stage 被引量:2
8
作者 王丽娟 李天来 《Agricultural Science & Technology》 CAS 2011年第5期707-709,755,共4页
[Objective] The aim was to explore the effects of low night temperature treatment on sucrose synthesis ability of tomato leaves in seedling stage.[Method] Effects of low night temperature of 6 ℃(with 15 ℃ as contro... [Objective] The aim was to explore the effects of low night temperature treatment on sucrose synthesis ability of tomato leaves in seedling stage.[Method] Effects of low night temperature of 6 ℃(with 15 ℃ as control)on the sucrose synthesis ability of tomato leaves were studied after 1,3,5,7 d of treatment.[Result] The contents of fructose,glucose and sucrose in tomato leaves were higher than control at 6:00 during the treatment of low night temperature,but in contrast at 11:00.The contents of fructose,glucose and sucrose in tomato leaves of low night temperature treatment and control group at 6:00 were lower than that at 11:00.The content of starch in tomato leaves was higher than control at 6:00 and 11:00 during the treatment.And the activities of sugar metabolism enzymes of tomato were changed by the treatment of low night temperature.The activities of acid invertase(AI)and neutral invertase(NI)were higher than those of control,while the activities of sucrose synthase(SS)and sucrose phosphate synthase(SPS)were lower than control at 6:00 and 11:00 during the treatment.The activity of all the enzymes at 11:00 of low night temperature treatment plants treated for 1,3,5,7 d was higher than that at 6:00.Compared to 6:00,the invertase activity of the control plant decreased,while the synthetase activity increased.The activity of sucrose synthase(SS)was decreased for treated plants,and the increase amount of sucrose content in leaves was lower than that of control at 11:00 during the treatment,indicating that the sucrose synthesis ability of tomato leaves was decreased by the treatment of low night temperature.[Conclusion] The results in this study had provided theoretical basis for the environmental control of high-yield cultivation of tomato. 展开更多
关键词 tomatol.esculentum Mill low night temperature Sucrose metabolism
下载PDF
Effects on Sucrose Metabolism,Dry Matter Distribution and Fruit Quality of Tomato Under Water Deficit 被引量:20
9
作者 QI Hong-yan, LI Tian-lai, ZHANG Jie, WANG Lei and CHEN Yuan-hong(Horticultural College, Shenyang Agricultural University, Shenyang 110161 , P.R.China) 《Agricultural Sciences in China》 CAS CSCD 2003年第11期1253-1258,共6页
Four irrigation treatments were designed with 2,4,6 and 8 d intervals to irrigate, respectively. Watering was stopped when the reading of the moisture tension sensor reached zero. The results indicated that glucose an... Four irrigation treatments were designed with 2,4,6 and 8 d intervals to irrigate, respectively. Watering was stopped when the reading of the moisture tension sensor reached zero. The results indicated that glucose and fructose content of tomato's fruit were increased but sucrose content was decreased with fruit growth and development. In different stages, carbohydrate content of tomato fruit in the treatment 3 was the highest, in the treatment 2 was higher, and in the other treatments was the lowest. SS(sucrose synthase)activity was decreased but SPS(sucrose phosphate synthase)activity was increased with development of tomato. SS and SPS activity were increased but acid invertase and neutral invertase activity of ripe stage were decreased under deficit irrigation. Glucose and fructose content were increased in leaves of tomato under water deficit. Soluble sugars, organic acid and the ratio of sugar/acid in tomato fruits were increased and dry matter accumulation of plant was enhanced under water deficit. But the growth of fruits upside the plant and its dry matter accumulation were badly affected under water stress. 展开更多
关键词 Water deficit tomato(lycopersicon esculentum Mill.) Sucrose metabolism Dry matter distribution Fruit quality
下载PDF
番茄(Lycoqersicon esculentum Mill)小孢子发生及其雄配子体发育的细胞学观察 被引量:4
10
作者 张秀刚 《北京农学院学报》 1990年第1期7-15,共9页
番茄小孢子的发生从孢原细胞开始,经过造孢细胞,小孢子母细胞、四分体、小孢子、雄配子体等发育阶段,最后形成二核花粉.番茄的绒毡层细胞是由初生壁细胞衍生的同型的双核细胞,正常情况下在减数分裂时期至四分体时期同步溶解.番茄的绒毡... 番茄小孢子的发生从孢原细胞开始,经过造孢细胞,小孢子母细胞、四分体、小孢子、雄配子体等发育阶段,最后形成二核花粉.番茄的绒毡层细胞是由初生壁细胞衍生的同型的双核细胞,正常情况下在减数分裂时期至四分体时期同步溶解.番茄的绒毡层为"变形绒毡层"类型,即溶解后的绒毡层要形成周原质团流入药室.番茄小孢子母细胞的减数分裂为同时型,在减数第一次分裂后不立即形成细胞壁,而是形成一个双核细胞;第二次分裂中,两个核同时进行分裂,其方向互为垂直,当分裂完成时,在四个核之间产生细胞壁,分隔成一个呈正四面体形的四分体.新形成的小孢子有浓厚细胞质和一个位于中央的细胞核.小孢子进一步发育形成明显的细胞壁,增大体积,细胞核被挤向一侧,在贴近细胞壁的位置上细胞核进行有丝分裂.分裂的结果形成两个子核:生殖核和营养核,两核之间最初由一弧形细胞板分隔成两个不等的细胞.番茄小孢子的发育基本是同步的,大多数小孢子都能发育成正常的成熟花粉. 展开更多
关键词 小孢子发生 减数分裂 雄配子体发育 变形绒毡层细胞 周原质团 番茄
下载PDF
Response of Tomato Plants to a New Application Method of Polyolefin-Coated Fertilizer 被引量:3
11
作者 TIAN Xiao-Hong M. SAIGUSA 《Pedosphere》 SCIE CAS CSCD 2005年第4期491-498,共8页
The response of tomato (Lycopersicon esculentum) plants basically fertilized with 0.3 g N per plant of compound fertilizer with a N:P2O5:K2O ratio of 20:10:20 to sticks of polyolefin-coated fertilizer (POCF) ... The response of tomato (Lycopersicon esculentum) plants basically fertilized with 0.3 g N per plant of compound fertilizer with a N:P2O5:K2O ratio of 20:10:20 to sticks of polyolefin-coated fertilizer (POCF) (LongT0 with a N:P2Os:K2O ratio of 14:12:14) applied 23 d after transplanting was investigated using rooting boxes in the greenhouse. The results at 26 and 40 d after stick fertilizer treatment showed that the use of the stick fertilizer greatly increased the production of many new fine roots from the tomato plants. Compared to the unfertilized control, root length and root length density in the stick fertilizer treatment increased by 3.6-6.7 fold. In the soil zones near the stick fertilizer, root weight and root mass density were also significantly higher for the stick fertilizer treatment. Additionally, the use of the stick fertilizer increased the N, P and K concentrations in the leaves and stems of the tomato plants. The new fine roots growing near the stick fertilizer not only absorbed more nutrients and translocated them to the shoots, but also contained more nutrients within themselves. The soil ammonium and nitrate N data showed that N released from the stick fertilizer played a major role in inducing the production of new fine roots. These results indicated that stick fertilizer could be used as an alternative to the co-situs application technique to change and control the root distribution of crops as well as to increase the potential capacity of roots for water and nutrient absorption. 展开更多
关键词 application method controlled release fertilizer tomato lycopersicon esculentum
下载PDF
Change in ^(14)C-soluble Sugar Involved in the Photosynthate Translocation Pathway of Tomato
12
作者 QI Hong-yan LI Tian-lai LIU Hai-tao ZHANG Jie 《Agricultural Sciences in China》 CAS CSCD 2006年第3期209-215,共7页
Liaoyuanduoli tomato was planted in pots in a solar greenhouse. The first leaf below the second cluster was labeled by ^14CO2 with a dose of 0.555 MBq 30 days after the second cluster anthesis. Mesophyll, midrib, peti... Liaoyuanduoli tomato was planted in pots in a solar greenhouse. The first leaf below the second cluster was labeled by ^14CO2 with a dose of 0.555 MBq 30 days after the second cluster anthesis. Mesophyll, midrib, petiole vascular of the fed leaf, internode vascular below the fed leaf (adjacent to the fed leaf), peduncle vascular of the second cluster, sepal, fruit pedicle, pulp, pectinic, and dissepiment were taken 2, 4, 8, 12, 20, 24, 48, and 72 h, respectively, after ^14CO2 feed to determinate the composition and specific activity of carbohydrate at different sites and different time after the labeling. The results indicated that almost all of the photosynthates resulting from 1 h of photosynthesis could be transported out of the leaf within 72 h and more than 85% of them were exported within 24 h. The greatest amount of sucrose transport occurred in the internode pedicel vascular bundle 8 h after the start of photosynthesis. Assimilates entering the fruit through the internode and pedicel vascular bundles were detectable but in small quantities 2 h after photosynthesis. Only the radio activity of sucrose but not that of glucose and fructose was detected, suggesting that some of the sucrose in the fruit came directly through the phloem at an early stage of fruit development, not through the synthesis of glucose and fructose. Fruit vascular may be the part where sucrose first metabolized after it entered the fruit. 展开更多
关键词 tomato l. esculentum Mill.) ^14C-Soluble sugar translocation time metabolism part
下载PDF
组成型表达的ClpB基因提高番茄植株的耐冷性 被引量:4
13
作者 秦佳 杨金莹 +3 位作者 伊淑莹 赵春梅 李明辉 刘箭 《植物生理学通讯》 CAS CSCD 北大核心 2007年第1期16-20,共5页
用农杆菌介导法将CaMV35S启动子驱动的ClpB cDNA导入番茄,并比较了转基因和未转基因番茄的抗冷能力。当受冷胁迫后,转基因番茄比未转基因番茄表现出较轻的冷胁迫症状,并维持较高的PSII水平。
关键词 ClPB 耐冷性 转基因番茄 PSⅡ
下载PDF
60份优质番茄自交系遗传多样性AFLP分析 被引量:5
14
作者 孙保娟 李植良 +2 位作者 金庆敏 李涛 黎振兴 《植物遗传资源学报》 CAS CSCD 北大核心 2013年第5期788-793,共6页
以AFLP技术对60份优质番茄自交系进行遗传多样性分析,结果表明17对AFLP引物组合扩增共得到905条带,其中多态性条带251条,平均每对引物检测到约15个多态性住点,平均多态率为27.7%;仅用E7M4和E7M10两对引物组合就可以绘制60份番茄... 以AFLP技术对60份优质番茄自交系进行遗传多样性分析,结果表明17对AFLP引物组合扩增共得到905条带,其中多态性条带251条,平均每对引物检测到约15个多态性住点,平均多态率为27.7%;仅用E7M4和E7M10两对引物组合就可以绘制60份番茄自交系的指纹图谱。60个自交系间的Jaceard遗传相似系数变幅为0.259~0.952,平均值为0.664。采用UPGMA方法聚类,遗传相似系数变幅为0.54~0.57时,60份番茄材料可以划分为7个类群。聚类结果与地理来源、平均单果重、果形等性状未表现出明显的相关性。 展开更多
关键词 番茄 优质 自交系 AFlP 遗传多样性
下载PDF
番茄LeNHX3基因的生物信息学分析 被引量:6
15
作者 范晶 胥成浩 +2 位作者 张西玉 刘超 黄明远 《湖北农业科学》 北大核心 2009年第12期2917-2921,共5页
应用生物信息学的方法和工具对番茄LeNHX3蛋白质的理化性质、跨膜区域、疏水性/亲水性、二级结构、结构功能域、功能分类和同源性进行了分析,结果表明,番茄LeNHX3蛋白为疏水性稳定蛋白,包含一个高度保守的具有氨氯吡嗪咪结合位点的LFFIY... 应用生物信息学的方法和工具对番茄LeNHX3蛋白质的理化性质、跨膜区域、疏水性/亲水性、二级结构、结构功能域、功能分类和同源性进行了分析,结果表明,番茄LeNHX3蛋白为疏水性稳定蛋白,包含一个高度保守的具有氨氯吡嗪咪结合位点的LFFIYLLPPI结构功能域,相对分子量为59.4kD,等电点为8.54,可能存在10个跨膜区域,蛋白质二级结构中的主要构成元件是α-螺旋和不规则卷曲;蛋白质同源性分析后,发现番茄LeNHX3蛋白和紫高杯花、矮牵牛花2种植物的Na+/H+反转运蛋白高度同源,序列相似性为90%。 展开更多
关键词 番茄 leNHX3基因 Na%PlUS%/H%PlUS%反转运蛋白 生物信息学
下载PDF
转il-4基因番茄的分子检测及田间分析 被引量:2
16
作者 及晓宇 于丽杰 +1 位作者 汪春蕾 彭洪雨 《分子植物育种》 CAS CSCD 2009年第3期519-523,共5页
通过花粉管通道介导il-4基因转化番茄L402、中疏4号、强力米寿和大黄4个品种。利用PPT抗性筛选、PCR扩增、PCR-Southern杂交和Western技术,对il-4基因转化番茄的后代进行检测,并对il-4基因在T3代番茄中的传递规律、T3代植株的田间表现... 通过花粉管通道介导il-4基因转化番茄L402、中疏4号、强力米寿和大黄4个品种。利用PPT抗性筛选、PCR扩增、PCR-Southern杂交和Western技术,对il-4基因转化番茄的后代进行检测,并对il-4基因在T3代番茄中的传递规律、T3代植株的田间表现进行调查。研究结果表明,T3代植株中il-4基因的分离情况不符合阳性植株数:阴性植株数=3:1的孟德尔分离规律,转il-4基因阳性植株数偏低。与非转基因植株(对照)相比,转il-4基因阳性植株的开花期延迟、田间抗病性下降、植株高度变矮、结实数/株减少、单株结果数减少,生长势和结实能力等综合农艺性状明显降低。而转基因阴性植株的综合农艺性状与非转基因植株(对照)相比,则差异不显著。花粉管通道法可以介导il-4基因转化番茄,il-4基因可以在转化后代中遗传。 展开更多
关键词 番茄(lycopersicon esculentum Mill.) 白细胞介素4 分子检测 田间分析
下载PDF
控释肥联合养分增效剂显著提高番茄产量与品质
17
作者 孙明 解环环 +5 位作者 刘德锐 吕臣浩 赵竹青 刘瑶 陈娥 陈永波 《湖北农业科学》 2024年第2期84-87,93,共5页
采用田间试验,以番茄(Lycopersicon esculentum Mill.)品种瑞菲为试验材料,通过控释肥联合养分增效剂探究其对番茄生长、产量与品质的影响。结果表明,控释肥联合养分增效剂能显著增加植株茎粗(P<0.05);与常规施肥相比,控释肥和控释... 采用田间试验,以番茄(Lycopersicon esculentum Mill.)品种瑞菲为试验材料,通过控释肥联合养分增效剂探究其对番茄生长、产量与品质的影响。结果表明,控释肥联合养分增效剂能显著增加植株茎粗(P<0.05);与常规施肥相比,控释肥和控释肥联合养分增效剂可显著改善番茄品质,番茄果实可溶性固形物含量有增加的趋势,可溶性糖含量、维生素C含量显著提高(P<0.05),番茄果实色泽度和硬度均有所改善;与常规施肥相比,控释肥和控释肥联合养分增效剂能有效提高番茄产量与经济效益,产量分别增加12.7%和29.2%,净利润分别增加3.65万元/hm^(2)和7.72万元/hm^(2)。综上,控释肥联合养分增效剂可实现番茄增产增效,在实现轻简化生产中具有重要的实践价值。 展开更多
关键词 控释肥 养分增效剂 番茄(lycopersicon esculentum Mill.) 产量 品质
下载PDF
TheRelati磷饥饿时番茄幼苗根系质膜H^+- ATP酶活性的变化与磷吸收的关系(英文) 被引量:1
18
作者 宋克敏 焦新之 +1 位作者 李琳 颜季琼 《植物生理学报(0257-4829)》 CSCD 2001年第1期87-93,共7页
磷饥饿提高了番茄幼苗质膜H+ ATP酶活性并促进了番茄幼苗根部的H+分泌。动力学分析表明 ,磷饥饿使番茄幼苗根部质膜H+ ATP酶的Km 值明显降低 ,亦即提高了该酶对其底物的亲和力 ,但对该酶的Vmax影响不大。另外 ,磷饥饿并不改变ATP酶的最... 磷饥饿提高了番茄幼苗质膜H+ ATP酶活性并促进了番茄幼苗根部的H+分泌。动力学分析表明 ,磷饥饿使番茄幼苗根部质膜H+ ATP酶的Km 值明显降低 ,亦即提高了该酶对其底物的亲和力 ,但对该酶的Vmax影响不大。另外 ,磷饥饿并不改变ATP酶的最适 pH值 (最适 pH值为 6.5)。钒酸盐显著抑制番茄幼苗根部质膜ATP酶的活性以及H+分泌 ,也显著抑制番茄幼苗的Pi吸收。与对照相比 ,上述抑制作用在饥饿处理的植物中表现得更强。以上结果表明 ,磷饥饿时高亲和性Pi传递系统的诱导很可能包含质膜H+ ATP酶的参与。 展开更多
关键词 番茄 磷饥饿 质膜H^%PlUS%-ATP酶 磷吸收
下载PDF
番茄LeNHX1基因植物过量表达载体的构建及表达分析
19
作者 范晶 雷常安 +4 位作者 黄明远 刘超 梁梓 陈丽萍 王永建 《生物技术通报》 CAS CSCD 北大核心 2010年第2期94-97,101,共5页
从番茄幼苗中提取RNA,根据NCBI中番茄LeNHX1基因序列设计引物,通过RT-PCR获得了番茄LeNHX1基因的cDNA序列,包含一个1 605 bp的开放阅读框,编码534个氨基酸。将cDNA序列连接到植物过量表达载体PBI121上,对所获得的重组质粒进行双酶切鉴定... 从番茄幼苗中提取RNA,根据NCBI中番茄LeNHX1基因序列设计引物,通过RT-PCR获得了番茄LeNHX1基因的cDNA序列,包含一个1 605 bp的开放阅读框,编码534个氨基酸。将cDNA序列连接到植物过量表达载体PBI121上,对所获得的重组质粒进行双酶切鉴定,结果表明,植物过量表达载体PBI121-LeNHX1已构建成功。半定量RT-PCR结果表明LeNHX1基因在根、茎和叶中均表达,盐、低温和脱落酸的诱导能提高LeNHX1基因的表达量,推测番茄LeNHX1基因在逆境应答中可能起着重要作用。 展开更多
关键词 番茄 leNHX1基因 植物过量表达载体
下载PDF
外源ALA对加工型番茄新番35号幼苗光合特性的影响
20
作者 闫刚 张春梅 《长江蔬菜》 2012年第10期27-29,共3页
以加工型番茄新番35号为试材,研究了喷施外源ALA对其幼苗光合作用的影响。试验结果表明,与对照相比,新番35号番茄幼苗叶片的净光合速率(Pn),气孔导度(Gs),蒸腾速率(Tr)、胞间CO2浓度(Ci)显著提高,水分利用率也有小幅度提高,说明喷施ALA... 以加工型番茄新番35号为试材,研究了喷施外源ALA对其幼苗光合作用的影响。试验结果表明,与对照相比,新番35号番茄幼苗叶片的净光合速率(Pn),气孔导度(Gs),蒸腾速率(Tr)、胞间CO2浓度(Ci)显著提高,水分利用率也有小幅度提高,说明喷施ALA能提高番茄植株的光合能力。 展开更多
关键词 番茄 AlA 光合作用
下载PDF
上一页 1 2 7 下一页 到第
使用帮助 返回顶部