期刊论文

Effects of Salt Stress on Seed Germination and Seedling Growth of Hybrid Rice Longliangyou Huazhan and Its Parents

中文

杂交水稻

1005-3956

2021

36

01

75-81

10.16267/j.cnki.1005-3956.20200311.075

湖南省科技重大专项“杂交海水稻研究与应用”（2018NK1010）； 湖南省科技人才托举工程项目（2019TJ-Q08）；

本校为第一机构

以杂交稻组合隆两优华占及其2个亲本隆科638S和华占为试验材料,萌发期设置6个NaCl质量分数梯度（0.2%、0.4%、0.6%、0.8%、1.0%和1.2%）和苗期设置3个NaCl质量分数梯度（0.4%、0.8%和1.2%）来模拟盐胁迫试验,以清水为对照,分析盐胁迫对杂交稻及其亲本种子萌发和幼苗生长的影响。结果表明,在各质量分数的盐胁迫处理下,萌发期各项指标均不同程度地受到盐胁迫影响,多数指标值均随盐质量分数升高而下降,且质量分数0.6%是隆两优华占及其亲本的耐盐临界值。在0.2%～0.6%NaCl胁迫下3个品种发芽率、发芽指数、活力指数、胚芽长的盐胁迫抑制率在品种间存在显著差异,进一步通过隶属函数值综合评价,得出3个...

Using the hybrid rice combination Longliangyou Huazhan and its parental lines Longke 638S and Huazhan as the materials, six NaCl concentration gradients (0.2%, 0.4%, 0.6%, 0.8%, 1.0% and 1.2%) at the germination stage and three NaCl concentration gradients (0.4%, 0.8% and 1.2%) at the seedling stage were set to simulate salt stress conditions to study and analyze the effects of salt stress on seed germination and seedling growth of hybrid rice and its parents. The results showed that various indexes were affected by salt stress to some extent under all of the NaCl concentration gradients at th...