摘要
本文研究了钙对酸雨伤害甜瓜幼苗的影响。30mmol/LCaCl2处理甜瓜幼苗2次,可明显减轻pH2.5酸雨对甜瓜幼苗的酸致损伤。实验结果显示,此与钙能提高甜瓜幼苗光合速率、叶绿素含量,增加CAT活性与叶片Ca2+含量,减少MDA含量,降低质膜透性,维持细胞汁pH值稳定性等多重生理生态效应有关。
The protective effect of calcium on muskmelon seedling harmed by acid rain was studied. When muskmelon seedlings were sprayed with 30 mmol/L CaCl 2 two times(once every 24h),the damage to muskmelon seedlings by acid rain at pH2 5 were reduced. The protective effect was because that CaCl 2 raised photosynthetic rate, chlorophyll content and Ca 2+ content, increased catalase activity, decreased malondialdehyde content, reduced cell membrane permeability and kept stability of cell juice pH value of muskmelon seedlings, etc .
出处
《植物生态学报》
CAS
CSCD
北大核心
1999年第2期186-191,共6页
Chinese Journal of Plant Ecology
基金
铁道部自然科学基金
关键词
钙
甜瓜幼苗
酸雨伤害
防护效应
Calcium, Muskmelon Seedling, Acid rain, Protective effect