Author(s): SUN Sheng, ZHANG Zhi, LU Min-min, XING Guo-ming
Pages: 389-393
Year: 2010 Issue:  2
Journal: Acta Agriculturae Nucleatae Sinica
Keyword:  cadmium; small style of watermelon; chlorophyll; photosynthesis; antioxidative enzym;
Abstract: 通过盆栽试验,研究了土壤中Cd2+对西瓜(Citrullus vulgaris)幼苗光合特性及活性氧代谢的影响.结果表明:Cd2+降低了小型西瓜叶绿素总含量,改变了叶绿素a/b的值,其叶绿素总含量与土壤中Cd2+浓度极显著(P<0.01)负相关;减弱了西瓜幼苗的净光合速率(Pn),降低了胞间CO2浓度(Ci)、气孔导度(Gs)和蒸腾速率(Tr).西瓜叶片中超氧阴离子自由基(O2-)产生速率、过氧化...