摘要
以Y两优1号为材料,研究不同浓度的铅(Pb2+)溶液对水稻种子萌发及生理特性的影响。结果表明:Pb2+对水稻种子萌发有较大的抑制作用;Pb2+浓度低于100 mg/L时,能在一定程度上促进水稻种子的发芽率;随着Pb2+浓度的提高,Pb2+胁迫对水稻种子萌发的抑制作用越大,水稻种子的苗高、根长、根数、根鲜重、苗鲜重以及叶片叶绿素含量明显降低,而根系丙二醛含量显著增加。
Using Y Liangyou No.1 as material,the paper studied the effect of Pb2＋ in different densities of rice on the seed germination and physiological traits.The results showed that lead had a bigger inhibitory effect on the seed germination of rice,it could promote the germination percentage of the rice seed when the concentration of Pb2＋ was lower than 100 mg/L.With the increasing of Pb2＋ concentration, the inhibitory effect on the germination of rice seed increased,and seedling height,root length ,root number,root fresh weight ,seedling fresh weight and level of chlorophyl in leaves reduced obviously, but the content of malondialdehyde in roots increased obviously.
出处
《现代农业科技》
2011年第17期58-59,共2页
Modern Agricultural Science and Technology
关键词
铅
水稻
发芽率
生理特性
lead
rice seeds
germination percentage
physiological traits
