期刊论文

中文

核农学报

1000-8551

2013

27

2

247-252

湖南省科技计划重点项目

本校为第一机构

以抗旱性不同的水稻品种旱116和湘早籼32号为材料,分别用0.25mmol?L~(-1)的亚精胺(Spd)和水引发处理36 h后,在浓度为0、5%、10%、15%、20%和25%的PEG6000溶液中进行发芽试验,并测定幼苗生理生化指标。结果表明,Spd和水引发处理可显著提高水稻种子在水分胁迫条件下的活力,促进幼苗生长,显著提高超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性及脯氨酸(Pro)和Spd的含量,明显降低丙二醛(MDA)含量。表明Spd和水引发处理对提高水分胁迫下水稻种子活力及增强幼苗抗旱性具有重要作用。试验还表明,引发处理对抗旱性较强的水稻品种旱116的引发效果好于抗旱性较弱的湘早籼32号,Spd的引发效果...

To study the effects of Spd priming on rice （ Oryza sative L. subsp, indica） seed vigor and seedling physiological characteristics under water stress, seeds of rice Han116 and Xiangzaoxian32 were primeded for 36 hour with 0. 25 mmol · L^-1 of Spd and water. Nonprimed and primed seeds were germinated under different water stress. The seed vigor and seedling physiological characteristics were investigated and compared. The results showed that Spd and water priming treatments significantly improved seed vigor and seeding growth, raised the acti...