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Relationship Between Heterosis and Endogenous Plant Hormones in Liriodendron 被引量:2
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作者 李周岐 王章荣 《Acta Botanica Sinica》 CSCD 2002年第6期698-701,共4页
To investigate the possible involvement of endogenous plant hormones in heterosis of Liriodendron interspecific hybrid, growth traits and contents of endogenous GA 1/3 (gibberellin A 1, A 3), IAA (indole_3_a... To investigate the possible involvement of endogenous plant hormones in heterosis of Liriodendron interspecific hybrid, growth traits and contents of endogenous GA 1/3 (gibberellin A 1, A 3), IAA (indole_3_acetic acid) and iPA (isopentenyl adenine) of tulip tree ( L. chinense (Hemsl.) Sarg.), yellow poplar ( L. tulipifera L.) and their interspecific hybrid ( L. chinense × L. tulipifera ) were examined. Results showed that: (1) the heterosis in height growth trait of the interspecific hybrid was mainly caused by the reletively greater elongation of internodes. Although the uppermost three internodes had the potential of elongation, the first one, which had the greatest elongation amount, contributed to the heterosis of the height growth trait; (2) the contents of endogenous GA 1/3 , IAA and iPA were greatly different among tulip tree, yellow poplar and their interspecific hybrid. All of the three interspecific hybrid families studied significantly contained higher amount of endogenous GA 1/3 and iPA in the uppermost first internode than their parental species. And thus, a correlation between the contents of endogenous GA 1/3 and iPA, and hybrid vigor for height growth trait in Liriodendron was observed; (3) the rankings of endogenous GA 1/3 and iPA contents in the uppermost first internode of three hybrid families studied were not similar to the ranking for height of 3_year_old trees. Therefore, the contents of endogenous GA 1/3 and iPA in the uppermost first internode could not be used in predicting hybrid vigor among hybrid families. 展开更多
关键词 LIRIODENDRON heterosis (hybrid vigor) endogenous plant hormone
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高温胁迫对黄姜叶片脯氨酸、可溶性糖和丙二醛含量的影响 被引量:39
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作者 涂三思 秦天才 《湖北农业科学》 北大核心 2004年第4期98-100,共3页
通过对高温胁迫下不同居群黄姜叶片中脯氨酸(Pro)、可溶性糖和丙二醛(MDA)的含量变化进行研究,结果发现,随着胁迫进行。不同居群黄姜叶片中脯氨酸和可溶性糖含量逐步升高;高温胁迫导致不同居群黄姜叶片中丙二醛含量先升后降,这一变化规... 通过对高温胁迫下不同居群黄姜叶片中脯氨酸(Pro)、可溶性糖和丙二醛(MDA)的含量变化进行研究,结果发现,随着胁迫进行。不同居群黄姜叶片中脯氨酸和可溶性糖含量逐步升高;高温胁迫导致不同居群黄姜叶片中丙二醛含量先升后降,这一变化规律不同于其他植物。进一步分析表明,原产地为湖北十堰、湖南泸溪和陕西安康及石泉4个居群的黄姜在高温胁迫下累积脯氨酸和可溶性糖的能力较强。 展开更多
关键词 黄姜 高温胁迫 脯氨酸 可溶性糖 丙二醛 含量 甾体激素植物
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虫害生物防治新技术在生态园林中的应用 被引量:4
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作者 窦维奇 《花卉》 2019年第20期262-263,共2页
城市居民的需求正在随着社会经济的发展而上升,新型的虫害生物防治技术的使用,能够为生态园林创建一个绿色的生态环境。本文对生态园林植物虫害生物防治技术阐述和生态园林所使用虫害生物防治技术的关键优势进行分析,通过植物源激素、... 城市居民的需求正在随着社会经济的发展而上升,新型的虫害生物防治技术的使用,能够为生态园林创建一个绿色的生态环境。本文对生态园林植物虫害生物防治技术阐述和生态园林所使用虫害生物防治技术的关键优势进行分析,通过植物源激素、以虫治虫等方面做以深入探讨,希望能为相关人士提供有效参考。 展开更多
关键词 生物防治 植物源激素 昆虫性激素
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Pesticidal character of phytoecdysteroids from Ajuga multiflora Bunge (Labiatae) on larvae of Cryptorrhynchus lapathi L. (Coleoptera: Curculionidae)
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作者 迟德富 孙明学 夏文富 《Journal of Forestry Research》 SCIE CAS CSCD 2002年第3期177-182,250,共6页
Eight kinds of phytoecdysteroids extracted from different parts of Ajuga multiflora Bunge (Labiatae) that were collected from different places at different time were tested for killing effects on the 2-instar larvae o... Eight kinds of phytoecdysteroids extracted from different parts of Ajuga multiflora Bunge (Labiatae) that were collected from different places at different time were tested for killing effects on the 2-instar larvae of Cryptorrhynchus lapathi L by adding them to the artificial diet of larvae. The experimental results indicated that adding 1-3-mL phytoecdysteroids to the artificial diet could lead 58%-100% of 2-instar larvae of C. lapathi to death within 24 days. The phytoecdysteroids extracted from the whole plant of A. multiflora which was collected before flowering time were much more effective than those extracted from the plants collected at flowering and after flowering periods, and the modified mortality rate of larvae reached 65.22%, 85.07%, and 98.11% at the dosage level of 1-mL, 2-mL, and 3-mL extracts, respectively. The extract made from root of A. multiflora plant was more effective in killing efficiency than those from stem and leaves, and the average death rates of larvae were up to 100%, 98.20% and 98.32% at dosage levels of 1-mL, 2-mL, and 3-mL extracts, respectively. The killing speed of the extracted phytoecdysteroids was slower than that of triflumuron, hexaflumuron or deltamethrin emulsifiable concentrate. The mortality rate of larvae is closely related to the feeding duration on the diets containing phytoecdysteroids. Feeding on the diets with addition of phytoecdysteroids for 16 days, more than 80% of treated 2-instar larvae of C. lapathi were led to death. The killing effect of the extracts was little affected by the growth areas of A. multiflora plant and the adding way to artificial diet. 展开更多
关键词 Ajuga multifora Bunge Cryptorrhynchus lapathi L. Larva Phytoecdysteroid
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Leafy head formation of the progenies of transgenic plants of Chinese cabbage with exogenous auxin genes 被引量:10
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作者 HE YU KE WAN XIN XUE +3 位作者 YU DONG SUN XU HONG YU PING LIN LIU(Fax:021-64042090 E-mail: heyk@iris. sipp.ac.cn)(National Laboratory of Plant Molecular Genetics, ShanghaiInstitute of Plant Physiology, Chinese Academy of Sciences,Shanghai 200032, China) 《Cell Research》 SCIE CAS CSCD 2000年第2期151-160,共10页
The experiment was performed to evaluate the progenies of plant lines transgenic for auxin synthesis genes derived from Ri T-DNA. Four lines of the transgenic plants were selfcrossed and the foreign auxin genes in pla... The experiment was performed to evaluate the progenies of plant lines transgenic for auxin synthesis genes derived from Ri T-DNA. Four lines of the transgenic plants were selfcrossed and the foreign auxin genes in plants of T5 generation were confirmed by Southern hybridization. Two lines, D1232 and D1653, showed earlier folding of expanding leaves than untransformed line and therefore had early initiation of leaf y head. Leaf cuttings derived from plant of transgenic line D1653 produced more adventitious roots than the control whereas the cuttings from folding leaves had much more roots than rosette leaves at folding stage, and the cuttings from head leaves had more roots than rosette leaves at heading stage. It is demonstrated that early folding of transgenic leaf may be caused by the relatively higher concentration of auxin. These plant lines with auxin transgenes can be used for the study of hormonal regulation in differentiation and development of plant organs nd for the breeding of new varietywith rapid growth trait. 展开更多
关键词 Auxin genes Chinese cabbage leafy head transgenic plants
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Effects of Exogenous Putrescine Application on Hormone Content of Citrus aurantium L. Seedling under Salt Stress
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作者 Muslim Abd Ali Abdulhussein 《Journal of Agricultural Science and Technology(A)》 2014年第6期521-528,共8页
A pot experiment was conducted in lath house to study the response of six month-old seedlings of sour orange (Citrus aurantium L.) irrigated with salinity water (1, 2 or 4 ds/m) for four month. The seedling was sp... A pot experiment was conducted in lath house to study the response of six month-old seedlings of sour orange (Citrus aurantium L.) irrigated with salinity water (1, 2 or 4 ds/m) for four month. The seedling was sprayed with putrescine at 0, 150 or 300 mg/L concentrations for three times with month interval, for investigation the effects of putrrescine spraying on hormonal changes in sour orange seedlings under salt stress. One month after the last putrescine application, the leaves of the vegetative shoots were picked for endogenous plant hormone determination. The results indicate that increasing level of irrigation water salinity to 4 ds/m significantly increased ABA, Put and SA; whereas, decreasing IAA and GA in leave. Spraying vegetative canopy with putreseine at 300 mg/L increased 1AA, SA, ABA and Put, while decreased GA. It can be concluded that the adverse effects of high salinity irrigated water on endogenous plant hormone can be ameliorated, to some extent, by exogenous application of Put at 150 mg/L or 300 mg/L concentration. 展开更多
关键词 Citrus rootstock plant hormones PUTRESCINE salt stress sour orange.
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