重金属铅对白菜种子萌发和幼苗生长的影响  

Effects of Lead Stress on Seed Germination and Seedlings Growth of Brassica Pekinensis Rupr.

作　　者：吴顺[1] 罗光宇[1] 杨琴姣[1] 

机构地区：[1]中南林业科技大学生命科学与技术学院,湖南长沙410004

出　　处：《种子》2008年第9期57-59,共3页Seed

基　　金：教育部青年骨干教师基金项目(2000科教司65号);中南林业科技大学引进人才项目(104-0024)

摘　　要：以白菜上海青为材料,研究了不同浓度铅胁迫对种子萌发和幼苗生长的影响。结果表明,低浓度铅胁迫对白菜种子萌发抑制不明显,但900 mg/L铅胁迫能明显抑制种子发芽。随着铅胁迫浓度增加,白菜幼苗的细胞膜透性增大,叶绿素含量下降,根系活力降低,幼苗生长受到抑制。The effects of lead stress on seed germination and initial growth of Brassica pekinensis Rupr. were studied by the Shanghai Qing. The results showed seed germination wasn＇t inhibited significantly by low concentration lead but could be inhibited significantly by 900 mg/L lead. The membrane permeability increased, chlorophyll content and root vigor decreased and seedling growth was inhibited with the increase of lead concentration.

关 键 词：铅 白菜 种子萌发 幼苗生长 

分 类 号：S634[农业科学—蔬菜学]