应用生态学报2012，Vol.23Issue(6)：1577-1584,8.
不同渍水时间对苗期和花期大豆生长及碳氮代谢的影响
Influence of different duration of waterlogging on the growth and C and N metabolism of soybean at seedling and flowering stages
摘要
Abstract
A pot experiment with soybean cultivar Nannong 99-6 was conducted to study its growth and C and N metabolism at seedling and flowering stages under the stress of different duration of waterlogging. Waterlogging inhibited the soybean growth. The plant biomass, leaf area, leaf pigment content, and photosynthesis rate all decreased significantly, and the leaf malonyldialdehyde ( MDA) content had a significant increase. The change ranges of the physiological indices increased with increasing waterlogging duration. After the release of the stress, the plants had some recovery. The recovery capability in treatment waterlogging for 10 d was stronger than that in the treatment waterlogging for 20 d. The leaf soluble C and N and key enzymes had different responses to waterlogging. Soluble sugar content and glutamine synthease and sucrose synthease activities all increased, but soluble protein content decreased. The influence of waterlogging on the plant biomass, leaf area, and MDA content was smaller at seedling stage than at flowering stage. It was suggested that the shorter the waterlogging duration was, the lesser damage the soybean plant suffered, and the stronger the recovery capability was. Soybean plant could recover itself after waterlogging for 10 d.关键词
大豆/渍水/碳氮代谢/光合速率/苗期/花期Key words
soybean/ waterlogging/ C and N metabolism/ photosynthetic rate/ seedling stage/flowering stage分类
农业科技引用本文复制引用
周琴,董艳,卞雅姣,韩亮亮,田一丹,邢邯,江海东..不同渍水时间对苗期和花期大豆生长及碳氮代谢的影响[J].应用生态学报,2012,23(6):1577-1584,8.基金项目
"十一五"国家科技支撑计划重点项目(2009BADA8B02)资助. （2009BADA8B02）
