摘要
以水稻种子为材料,探讨了不同La3+浓度浸种对水稻种子萌发及生理生化特性的影响。结果表明,La3+浸种对水稻种子萌发及生理生化特性的影响与La3+的浓度有关。在1～30mg·L-1的La3+浸种能提高水稻种子的活力及淀粉酶、过氧化物酶、脂肪酶的活力,并且能促进水稻幼苗茎、叶和根系的生长。当浓度超过50mg·L-1时,水稻种子萌发及幼苗的生长受到抑制。La3+对水稻植株根系生长的影响比茎叶生长的影响要显著。
Effects of La^3＋ on germination and physiological and biochemical characteristics of rice seed were studied. The resuits showed that the seeds＇ growth had bearing on the concentration of La^3＋. Within the range of 1-30 mg·L^-1,La^3＋ soaking increased the vigor of seed and its amylase, peroxideenzyme and lipase activities, and promoted the growth of plant shoot and root. When La^3＋ concentration was higher than 50 mg·L^-1, seed germination and seedling growth were depressed. The effect of La^3＋ on root was much stronger than on shoot.
出处
《湖北农业科学》
北大核心
2009年第2期283-285,共3页
Hubei Agricultural Sciences
基金
重庆市重大科技攻关项目(2006AC10045)
关键词
水稻种子
硝酸镧
萌发
幼苗生长
rice seed
lanthanum nitrate
seed germination
seedling growth
