摘要
研究了模拟酸雨对桃梨叶片和果实的影响.结果表明:①经pH3.5,2.5,2.0的酸雨处理后,叶片在短期内出现不同程度的可见性伤斑,叶绿素含量和净光合速率下降,细胞膜透性明显增大.相对电导率与模拟酸雨pH值的相关系数为-0.8466*(桃)和-0.8560*(梨).②模拟酸雨处理后的果实大小和品质有下降趋势(但差异不显著).而且果实的贮藏性明显下降.③桃和梨受酸雨危害的情形基本一致。
This study was intended to obtain information about the effects of simulated acid rain on leaves and fruits of peach and pear The results are as follows ①The leaves treated with simulated acid rain with pH 3 5, 2 5 and 2 0 showed injury spots of various extent and reduction in chlorophyll content and net photosynthetic rate However, the treatment led to marked increase in cell membrane permeability There was significant negative correlation between relative electric conductivity and the pH value of simulated acid rain with the correlation coefficients of -0 846 6 * (for peach) and -0 856 0 *(for pear) ②Treatment with simulated acid rain also caused a reduction in fruit weight and overall quality, but not so significantly. The shortening of storage life is, however, remarkable ③The effects of simulated acid rain on peach and pear were essentially alike with the former being more sensitive
基金
浙江省教委科研基金
关键词
模拟酸雨
桃
梨
细胞膜透性
光合作用
贮藏性
simulated acid rain
peach
pear
cell membrane permeability
photosynthesis
storage property