中国油料作物学报2011，Vol.33Issue(4)：362-367,6.
结荚鼓粒期土壤水分胁迫对不同大豆品种形态和生理特性的影响
Effects of soil water stress during seed formation stage on morphological and physiological characteristics in various soybean varieties
摘要
Abstract
In order to investigate the effects of soil water stress on morphology and physiological characteristics of soybean, three different drought - resistant soybean varieties (Hefeng25, Heinong44 and Jindou21) were selected for pot experiment. Moderate and severe soil water stress were applied from beginning of pod formation to seed filling stage. Morphological characteristics, chlorophyll content, photosynthetic rate, SOD activity, POD activity, CAT activity were examined. The results of drought resistance of tested cultivars were shown as: Jindou21 > Hei-nong44 > Hefeng25. Jindou21 of the most resistant rootstocks demonstrated the powerful growth advantage under soil water stress. Many indices of Jindou21 were higher than Heinong44 and Hefeng25, including plant height, pods number per plant, grain number per plant, grain weight per plant, chlorophyll content, Pn (photosynthetic rate) and POD activity. But GS (stomatal conductance) and Tt (transpiration rate) of Jindou21 were higher than Heinong44 and Hefeng25, their decrease were significantly higher than Heinong44 and Hefeng25 under severe soil water stress. Jindou21 had higher water use efficiency. These morphological characteristics and physiological index could be used to evaluate drought resistance of soybean.关键词
大豆/抗旱性/土壤水分胁迫/产量/形态和生理特性Key words
Soybean/ Drought tolerance/ Soil water stress /Yeild/ Morphology and physiological characteristics分类
农业科技引用本文复制引用
任海祥,童淑媛,杜维广,邵广忠,杜震宇,宗春美,岳岩磊,王玉莲..结荚鼓粒期土壤水分胁迫对不同大豆品种形态和生理特性的影响[J].中国油料作物学报,2011,33(4):362-367,6.基金项目
黑龙江省自然科学基金重点资助项目(ZD201003) （ZD201003）
