沈阳农业大学学报2011，Vol.42Issue(2)：147-151,5.
低温胁迫对玉米种子萌发过程中内源激素含量变化的影响
Effect of Endogenous Hormones Content Changing on the Chilling Tolerance in Maize Seed Germination
张雪峰1
作者信息
- 1. 辽宁省绿色食品发展中心,沈阳110032
- 折叠
摘要
Abstract
Under 10℃ treatment, four maize varieties were used to study the changes of ABA and GA3 endogenous hormones contents on seed germination stage for maize chilling-tolerance. The chilling-resistance cultivars showed more endogenous CA3 contents than chilling-sensitive line, raising and then decreasing at normal and low temperature. The GA3 contents of chillingtolerance line (Zhengdan958 and Jidan415) increased to the highest level(416.79ng·g-1 and 441.36ng·g-1) after 9d 10℃ treatment. The results indicated that Zhengdan958 and Jidan415 could maintain a higher endogenous ABA(575.2ng·g-1and 596.52ng·g-1)and lower GA/ABA under low temperature during seed germinating.Tiedan18 and Liaodan632 had more dramatically changes than Zhengdan958 and Jidan415. This also indicated that these indexes may affect chilling-tolerance among different cultivars. Effects of exogenous hormones on the seed germination vigor and seedlings growth were tested to improve chilling-tolerance at low temperature. The best resist-chilling concentration is GA35mg·L-1, ABA10mg·L-1.关键词
玉米/种子萌发/内源激素/低温胁迫Key words
maize/germinating seed/endogenous hormones/low temperature stress分类
农业科技引用本文复制引用
张雪峰..低温胁迫对玉米种子萌发过程中内源激素含量变化的影响[J].沈阳农业大学学报,2011,42(2):147-151,5.
