摘要
矮秆品种具有改善株型、抗倒伏和高产等优点。以大豆东农42及其矮秆突变体东泽11为试验材料,于7月1日至8月20日每隔10d进行浓度为100mg·L-1外源GA3处理,探讨外源GA3对矮秆突变体与野生型株高生长、叶片光合特性以及光合产物的影响。结果表明,GA3处理均促进了矮秆突变体与野生型株高的生长,且对矮秆突变体株高的促进率高于野生型,100mg·L-1GA3处理使矮秆突变体恢复野生型植株表型。外源GA3处理,矮秆突变体叶片蒸腾速率、气孔导度、胞间CO2浓度、叶绿素、可溶性蛋白质、淀粉含量增加,光合速率、可溶性糖、蔗糖含量降低;野生型叶片蒸腾速率、气孔导度、叶绿素、可溶性蛋白质、可溶性糖、蔗糖含量增加,光合速率、胞间CO2浓度、淀粉含量降低。
Dwarf varieties have the advantage of improving plant type, lodging and high-yield. Soybean ＇ Dongnong 42＇ and its dwarf mutant ＇ Dongze 11＇ were used as experimental materials, with lO0mg＇L-texogenous GA3 treatment every 10 days to investigate the effects of plant height growth, photosynthetic characteristics, and photosynthetic products in leaves at July 1 to August 20. The results indicated that the GA3 treatment promoted the growth of both dwarf mutant and wild type, and 100mg·L-1 exogenous GA3 treatment could recover plant height phenotype of the mutant. The transpiration rate, the stomatal conductance, the intercellular CO2 concentration, the chlorophyll, the soluble protein, and the starch content were increased, while the photosynthetic rate and the soluble sugar and sucrose content were decreased in dwarf mutant leaves by exogenous GA3 treatment. The transpiration rate, the stomatal conductance, the chlorophyll, the soluble protein, the soluble sugar, and the sucrose content were increased, while photosynthetic rate, the intercellular CO2 concentration, and the starch content were decreased in wild type leaves by exogenous GA3 treatment.
出处
《核农学报》
CAS
CSCD
北大核心
2014年第2期327-334,共8页
Journal of Nuclear Agricultural Sciences
基金
东北农业大学科学研究基金(2010RCB56)
国家基础科学人才培养基金子项目(J1210069)
关键词
大豆
矮秆突变体
GA3
株高性状
光合特性
Soybean
Dwarf mutant
GA3
Plant height trait
Photosynthetic characteristics
