生理生化指标证实8℃为白银豆幼苗的临界生长低温  

Physilogical and biochemical changes confirmed that 8 ℃ was the critical chilling temperature for lima bean seedlings

作　　者：王长春[1] 张玉梅[1] 杨玲[1] 胡海涛[1] 

机构地区：[1]浙江师范大学化学与生命科学学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2013年第1期17-21,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省自然科学基金资助项目(398025)

摘　　要：温州白银豆起源于热带美洲,对低温敏感,在浙江地区经常遭受倒春寒.笔者曾借助电导率法基于Arrhenius图预估白银豆幼苗生长临界低温为8℃.检测了白银豆幼苗在8℃低温胁迫下叶绿素和丙二醛的含量、光系统Ⅱ的最大光化学效率(Fv/Fm)、超氧化物歧化酶和过氧化物酶的活性的24 h动态变化.结果表明,8℃作为白银豆幼苗的临界生长低温是合理的.Lima bean plants （Phaseolus lunatus L ） originated from tropical zone in the belong to a chilling-susceptible species. The seedlings grown in Zhejiang often suffered late spring. A critical chilling temperature 8℃ was estimated according to Arrhenius plot northern Andes and temperature drop in of relative electrical conductivity. Dynamic changes of chlorophyll and malondialdehyde content, Fv/Fm, superoxide dismutase and peroxidase activity under 8 ℃ stress for 24 h were investigated and confirmed that 8℃ was the critical chilling temperature for lima bean seedlings.

关 键 词：白银豆 临界生长低温 叶绿素 抗氧化酶 

分 类 号：Q945.78[生物学—植物学]