摘要
盐胁迫条件下,水稻种子在萌发过程中,发芽率、发芽指数、活力指数和α-淀粉酶活性均极显著低于对照。通过在盐胁迫处理中分别加入20、40、60、80、100mg/L外源GA3,水稻种子的发芽率、发芽指数、活力指数和α-淀粉酶活性均有一定的提高,外源GA3对盐胁迫起到了一定的缓解作用,其中80mg/L外源GA3处理的水稻种子缓解效果显著,各指标与无NaCl胁迫的正常对照相比,差异不显著,能最大限度地缓解盐对水稻种子萌发的抑制作用。
Under salt condition,the germination rate,germination index,vigor index and α-amlyase activity were all significantly decreased in the process of rice seed germination,compared with the control treatment without NaCl stress.The results showed that adding exogenous GA3 at the concentration of 20mg/L,40mg/L,60mg/L,80mg/L,100mg/L increased all above parameters and could reduce the effects of salt stress,with the best reducing effect from 80mg/L.At this concentration,all above parameters were not significantly different from the control.
出处
《湖北农业科学》
北大核心
2010年第9期2065-2067,共3页
Hubei Agricultural Sciences
基金
上饶师范学院2008年度科技项目(0813)
