江西农业学报2011，Vol.23Issue(11)：53-55,58,4.
盐胁迫对棉花出苗及其成苗的效应
Effects of Salt Stress on Seedling Emergence and Seedling Formation of Cotton
摘要
Abstract
The seedling emergence status of 6 salt -alkali -tolerant cotton varieties (lines) and 1 salt -alkali -susceptible cotton variety which were sown at different dates was studied, and their seedling formation characters under the condition of salt stress to three - leaf seedlings were analyzed. The results indicated that the seedling emergence rates of 7 tested cotton varieties (lines) in the soil without salt - alkali were all about 80%. In the soil containing 0.4% salt, the seedling emergence rate of salt - alkali - tolerant cotton varieties (lines) was higher than that of salt - alkali - susceptible cotton variety Sikang No. 1. The inhibitory action of salt stress on seedling emergence was more obvious along with the delaying of sowing date. The growth potential of 7 tested varieties (lines) was similar in the no - salt soil. After applying 0.4% salt at three - leaf stage, the lethal rate of salt stress to salt - alkali - tolerant cotton varieties (lines ) was obviously lower than that of Sikang No. 1. The salt - alkali tolerance of salt - alkali - tolerant cotton varieties (lines) at seedling formation stage was stronger than that of Sikang No. 1. For the salt -alkali -tolerant cotton varieties (lines), their salt - alkali tolerance identification results at seedling stage was not similar to that at three - leaf stage, indicating that the complexity of physiological and biochemical mechanism in the salt - alkali tolerance of cotton. Through the test, we screened out a new salt - tolerant cotton variety Suyan 7045, which had high salt - tolerance both at seedling emergence stage and at seedling formation stage.关键词
棉花/盐胁迫/出苗/三叶期/成苗Key words
Cotton/ Salt stress/ Seedling emergence/ Three -leaf stage/ Seedling formation分类
农业科技引用本文复制引用
刘剑光,肖松华,吴巧娟,陈旭升,许乃银,狄佳春,马晓杰..盐胁迫对棉花出苗及其成苗的效应[J].江西农业学报,2011,23(11):53-55,58,4.基金项目
江苏省科技支撑计划项目"高品质转基因抗病虫棉花新品种选育"(BE2011304). （BE2011304）
