镉胁迫对青菜生长和光合特性的影响  

Effects of Cd Stress on Growth and Photosynthesis Characteristics of Brassica chinensis

作　　者：马超[1] 金佳佳[1] 徐芳[1] 陈星[1] 胡杭娇[1] 田美玉[1] 柯世省[1] 

机构地区：[1]台州学院生命科学学院,浙江临海317000

出　　处：《安徽农业科学》2010年第11期5569-5571,共3页Journal of Anhui Agricultural Sciences

基　　金：浙江省自然科学基金资助项目(Y504256);2008年度浙江省大学生科技创新活动资助项目

摘　　要：以青菜品种苏州青为材料,采用盆栽试验研究不同土壤镉浓度对其生长和光合作用的影响。结果表明,较高浓度的镉胁迫下青菜的生长和叶片扩展受到明显抑制,其净光合速率、表观量子效率和最大光化学效率显著降低;低浓度镉胁迫使青菜的暗呼吸速率增大。With Brassica chinensis variety ＂Suzhouqing＂ as the material, the effects of Cd stress with different concn.in soil on their growth and photosynthesis were studied through pot test.The results showed that Cd stress with higher concn.had obvious inhibition on growth and leaf extension of B.chinensis, and made their net photosynthetic rate, apparent quantum yield and the maximal photochemical efficiency significantly decrease.Cd stress with low concn.could increase dark respiration rate of B.chinensis.

关 键 词：青菜 镉胁迫 生长 光合特性 

分 类 号：S636.4[农业科学—蔬菜学]