浙江农林大学学报2012，Vol.29Issue(1)：17-22,6.
自然低温对慈竹和撑绿杂交竹生理特性的影响
Physiological characteristics of Neosinocalamus affinis and Bambusa pervariabilis × Dendrocalamopsis grandis with natural low temperature
摘要
Abstract
An unusually severe snow disaster occurred in southern China in 2008, which exposed variation in bamboo species. Neosinocalamus qffinis was highly tolerant to low-temperature damage, but hybrid bamboo (Bambusa pervariabilis X Dendrocalamopsis grandis) died out. Why did the phenomenon occur? A study was thereupon conducted to determine the effects of natural low temperature stress on physiological characteristics to compare their chilling tolerance. Leaves of N. Qffinis and the hybrid bamboo were sampled in summer (22-30 ℃) and winter (-2 - 4 ℃) to study physiological characteristics, such as chlorophyll (Chl) content, membrane permeability, malondialdehyde (MDA), soluble sugar content, free proline content, and electrolyte leakage; along with superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activities. The age of leaf samples uniforms to ensure the accuracy of experiment. The results showed that Chl contents of both bamboo species gradually decreased with decreasing temperature, whereas membrane permeability, MDA, soluble sugar content, free proline content, and electrolyte leakage increased. Also, SOD, POD, and CAT activities increased. With the same low temperature stress, MDA and electrolyte leakage in the leaves of TV. Qffinis were lower (P<0.01) than the hybrid bamboo, whereas free proline content, soluble sugar content, SOD, POD and CAT activities were higher (P<0.01) than the hybrid bamboo.关键词
植物学/慈竹/撑绿杂交竹/抗寒性Key words
botany/ Neosinocalamus qffinis/ hybrid bamboo (Bambusa pervariabilis X Dendrocalamopsis grandis )/ cold tolerance分类
农业科技引用本文复制引用
张帆,万雪琴,朱小琼,姜炎圻,高龙,陈其兵..自然低温对慈竹和撑绿杂交竹生理特性的影响[J].浙江农林大学学报,2012,29(1):17-22,6.基金项目
“十一五”四川省科技攻关项目(2006YZGG-10) （2006YZGG-10）
四川省教育厅重点项目(08ZA072) （08ZA072）
