草业科学2012，Vol.29Issue(5)：753-758,6.
CoCl_2对酸胁迫下多花黑麦草种子萌发及幼苗抗性的影响
Influences of COCl2 on seed germination and seedling resistance of Lolium multifolorum under acid stress
摘要
Abstract
Seeds of Lolium multiflorum were soaked in different concentrations of COC12 solutions for 24 h and then germinated in acid solutions with different pH to study effects of COC12 on seed germination and seedling growth under acid stress. With increase of acidity the germination vigor, germination capacity, germination index, vitality index and chlorophyll content of L. rnultiflorurn deceased obviously, while the inhibition index of root, malondialdehyde （MDA） content, production rate of O2-· and H2O2 content and the activities of superoxide dismutase （SOD） increased significantly. The activities peroxydase （POD） increased firstly and then decreased; and membrane stability index also declined. Under the condition of acid stress, seed germination rate, chlorophyll content, shoot length, dry weight of aerial part and the SOD activity of L. multiflorum were obviously elevated by the treatment of 0.1mmol·L-1 CoCl2, while the MDA content and POD activity were impaired. In general, under the acid stress, the seed germination, seedling growth and the resistance to acid stress of L. rnultiflorurn were prompted obviously by the treatment of 0.1mmol·L-1 CoCl2.关键词
酸胁迫/CoCl2/萌发/多花黑麦草/抗性Key words
acid stress/CoC12/germination/Lolium multifolorum/resistance分类
农业科技引用本文复制引用
回振龙,马兰,李朝周..CoCl_2对酸胁迫下多花黑麦草种子萌发及幼苗抗性的影响[J].草业科学,2012,29(5):753-758,6.基金项目
甘肃省科技厅重大专项 （）
甘肃省教育厅项目 （）
