摘要
通过模拟田间试验,研究比久(B9)对酸雨胁迫下6年生东魁杨梅的生理生化特征影响。结果表明:比久能减少酸雨胁迫时丙二醛(MDA)的积累;提高超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,减缓膜脂过氧化程度;缓解酸雨胁迫下东魁杨梅叶绿素和类胡萝卜素的降解速度,促进叶片净光合速率的增加,从而提高叶片中可溶性糖和蛋白质含量以及可溶性糖/蛋白质含量的值。但比久处理需要适当的浓度,浓度过高会产生负效应,比久调控的最佳浓度为2500mg/kg左右。
After treating six-year old tree of Myrica rubra cv. Dongkui with B9 solution, we studied the effect of B9 on activities of certain enzymes and photosynthesis ability and floral bud differentiation of Myrica rubra cv. Dongkui in the period of floral bud differentiation. It was found that B9 solution can decrease the accumulation of malondialdehyde (MDA) , and increase the activities of superoxide (SOD) and peroxidase (POD) and catalase (CAT) , which can alleviative the peroxidation degree of membrane lipid ...
出处
《热带作物学报》
CSCD
2009年第4期495-499,共5页
Chinese Journal of Tropical Crops
基金
华侨大学科研基金项目(No.07HZR24)资助
关键词
东魁杨梅
比久(B9)
酸雨胁迫
生理指标
B9
Myrica rubra cv. Dongkui
acid rain stress
physiological and biochemical change
