大豆科学2018，Vol.37Issue(2)：209-214,6.DOI:10.11861/j.issn.1000-9841.2018.02.0209
不同降雨条件对不同耐旱型大豆根系的影响
Effect of Different Rainfall Conditions on Root System of Different Drought Resistance Soybean
摘要
Abstract
In order to determine the root configuration specificity of the drought durable soybean,field experiments were conducted to investigate the effects of different rainfall conditions on the root characteristics in soybean using different soybean cultivars.The results showed that drought stress reduced the root and shoot biomass at different growth periods in soybean.The root and aboveground biomass of Liaodou 14 were higher than that of Liaodou 21 at R2 and R4 stages in the same location.The ratio of root to shoot increased gradually with the growth of soybean.Generally,drought stress increased the root-to-shoot ratio at V4,R2 and R4 phases.Drought stress significantly increased soybean root length at seedling stage but significantly reduced root length and root surface area at podding stage.Root length ratio was primarily dominated by fine root (root diameter ≤ 2.5 mm),accounting for above 90％ in each period.Soybean root surface area ratio was also dominated by fine roots,however,the higher proportion of root volume was mainly with thick roots which average root diameter was more than 2.5 mm.关键词
大豆/耐旱基因型/根系Key words
Soybean/Drought tolerant genotypes/Root systems分类
农业科技引用本文复制引用
闫春娟,宋书宏,王文斌,孙旭刚,王昌陵,曹永强,张立军,李盛友..不同降雨条件对不同耐旱型大豆根系的影响[J].大豆科学,2018,37(2):209-214,6.基金项目
辽宁省创新人才培养计划(2014027,2015029) （2014027,2015029）
国家大豆产业技术体系(CARS-004-CES11) （CARS-004-CES11）
国家重点研发计划(2016YFD0100201-01,2017YFD0101304-2) （2016YFD0100201-01,2017YFD0101304-2）
辽宁省中央引导地方科技发展专项(2017108006). （2017108006）
