摘要
以"新乡青"萝卜为试材,研究了不同浓度外源水杨酸、钙和一氧化氮处理对高、低温胁迫下萝卜种子发芽的影响。结果表明,在35℃高温胁迫下,较低浓度的水杨酸和硝普钠处理可促进萝卜种子萌发,高浓度的水杨酸和硝普钠对种子萌发有抑制作用,水杨酸和硝普钠最佳处理浓度分别为0.01mmol.L-1和0.1mmol.L-1;不同浓度的外源钙处理对萝卜种子萌发均起抑制作用。在10℃低温胁迫下,低浓度的水杨酸和外源钙能促进种子萌发,浓度分别以0.005mmol.L-1和5mmol.L-1效果最佳,高浓度的水杨酸和外源钙对种子萌发有抑制作用;硝普钠各浓度处理对萝卜种子的萌发均具有抑制作用。
In this paper,the effects of different concentration of exogenous salicylic acid （SA）, calcium and sodium nitroprusside （SNP） on seed germination of radish were studied under temperature stress. The results showed that lower concentration of exogenous SA and SNP could promote seed germination of radish at high temperature （35 ℃）, while high concentration could inhibit seed germination. And the optimum treatment concentration of SA and SNP was 0.01mmol·L-1 and 0.1 mmol.L-1 respectively. The different concentrations of exogenous calcium treatment could inhibit seed germination . Lower concentration of exogenous SA and calcium could promote seed germination of radish at low temperature （10 ℃）, while high concentration could inhibit seed germination.And the optimum treatment concentration of SA and calcium was 0.005 mmol ·L-1 and 5 mmol .L-1 respectively. Different concentrations of exogenous SNP treatment could inhibit seed germination under low temperature （10 ℃）.
出处
《职大学报》
2012年第2期65-69,共5页
Journal of the Staff and Worker’s University
基金
河南省科技攻关重点项目"设施蔬菜持续高产高效关键技术研究与示范"(102102310331
112102110023)
关键词
水杨酸
钙
一氧化氮
硝普钠
温度胁迫
萝卜
种子发芽
salicylic acid （SA）
calcium,CaCl2
nitric oxide （NO）
sodium nitroprusside（SNP）
temperature stress
radish
seed germination
