摘要
研究了涂料覆盖和遮阳网覆盖对夏季棚内辣椒幼苗生理指标的影响。结果表明:夏季塑料大棚内的持续高温对辣椒幼苗造成了严重损伤,致使其叶绿素积累减少,根系吸收能力减弱,细胞膜损伤,抗氧化酶系统被破坏,超氧化物歧化酶(SOD)和过氧化物酶(POD)活性减弱;不论是涂料覆盖还是遮阳网覆盖,都能在一定程度上减轻缓解辣椒幼苗的高温伤害,使得辣椒幼苗叶绿素含量升高,MDA含量降低,POD和SOD活性增强;与遮阳网相比,涂料覆盖更有利于幼苗生长。
The physiological indices of pepper seedling in plastic greenhouses were studied by using coating and shading-nets. The results showed that in no-shading greenhouse, the chlorophyll content and root activity significantly decreased under a high temperature. At the same time, MDA content increased, and SOD activity and POD activity were reduced. Both coating and shading-nets relieved the injury from high temperature to some extent. Chlorophyll content and root activity in- creased,but MDA content decreased. POD and SOD activity enhanced because of coating. Com- pared with shading-nets,paint coating could be more beneficial to improve the growth of pepper seedlings.
出处
《河南农业科学》
CSCD
北大核心
2013年第7期91-93,共3页
Journal of Henan Agricultural Sciences
基金
淮安市农业科技支撑计划项目(SN1033)
关键词
高温伤害
涂料
遮阳网
辣椒
生理指标
high temperature injury
paint coating
shading-nets
pepper
physiological indexes
