期刊论文

Effects of Salt Stress on Seed Germination and Seedling Growth of Hybrid Rice 'CY1000' and Its Parents

中文

分子植物育种

1672-416X

2020

18

17

5835-5843

10.13271/j.mpb.018.005835

湖南省科技重大专项(2018NK1010) 国家自然科学基金面上项目(31771767) 香港中文大学合作项目培育超高产杂交稻组合(TK1711793) 湖南省自然科学基金青年项目(2017JJ3156) 湖南省科技人才托举工程项目(2019TJ-Q08)共同资助。

本校为第一机构

本研究以1.8×10~4 kg/hm~2超级稻攻关品种‘超优千号’及亲本‘(广湘24S’,‘R900’)为供试材料,在萌发期共设置0、0.2%、0.4%、0.8%、1.0%和1.2%这6个不同盐浓度处理,对发芽率、发芽指数、活力指数、胚芽长、胚根长等性状指标进行观测;在幼苗期,分别设置0、0.4%、0.8%和1.0%这4个不同盐浓度处理,对幼苗的根长、苗高、鲜重、地上/地下部分K~+/Na~+含量等指标进行测定。结果表明:(1)除0.2%盐浓度条件促进‘超优千号’的发芽外,其余情况下随盐浓度升高3个品种的发芽率、相对发芽率、发芽指数与活力指数均呈下降趋势,但不同品种各项指标的下降幅度有所不同;(2)不同盐浓度胁迫对3个品种的胚芽和胚根...

The 'CY1000' which is hybrid rice variety with high yield of 1.8×10~4 kg/hm~2 high yielding research and its parents ('GX24S', 'R900') were used in this study. Germination of these seeds was treated with different NaCl solutions (0, 0.2%, 0.4%, 0.8%, 1.0%, 1.2%), then germination rate, germination index, vigor index, plumule length, radicle length and other traits were measured. Seedlings of the 3 varieties were treated with different NaCl solutions (0, 0.4%, 0.8%, 1.0%), the root length, root length, fresh weight, K~+/Na~+ content of abovegro...