湖南农业大学学报（自然科学版）2001，Vol.27Issue(3)：185-187,3.
不同季节龙葵叶面微生物与叶片冻害的关系
Relationship between Phyllospheric Microoganisms and Freeze Injury to Leaves of Solanum nigrum in Different Seasons
摘要
Abstract
In order to study the relationship between phyllospheric microoganisms and freeze injury to leaves of plant, leaves of Solanum nigrum were washed with sterile water in summer and winter,while the control was not.These leaves were frozen at -17 ℃ in refrigerator for different periods of time.The freeze injury to leaves was observed and phyllospheric microoganisms were isolated and identified. The results show that the frozen spots with average diameter of (2.60±0.24) mm is found on leaves after frozen for 1 min in winter;the number of frozen spots of washed group reduce by 71% compared with the control;the frozen spots don't appear after frozen for 1 min in summer; and the number of frozen spots with average diameter of (1.80±0.17) mm reduced by 76.7% compared with the control.The longer the time was , the worse the freeze injury is.Leaves of the control are all injured after frozen for 1 h in winter and 1.5 h in summer, while washed leaves are all injured after frozen for 1.5 h in winter and 2 h in summer. When young leaves are frozen, the freeze injury covers 72% of the whole area after frozen for 5 min in summer and 80% after frozen for 1 min in winter. All leaves are injured after frozen for 30 min in winter and 40 min in summer. 5 kinds of phyllospheric microoganisms are isolated:coccus G+,bacillus G+(2 kinds),bacillus G－,actinomycetes.The bacteria with the largest number are staphylococci albus.关键词
龙葵/叶面微生物/冻斑/鉴定分类
生物科学引用本文复制引用
康健,王海华,林超,曾富华..不同季节龙葵叶面微生物与叶片冻害的关系[J].湖南农业大学学报（自然科学版）,2001,27(3):185-187,3.基金项目
湖南省教育厅资助项目(99C226) （99C226）
