林业科学2012，Vol.48Issue(12)：122-127,6.
水分胁迫对三峡库区消落带桑树幼苗生理特性的影响
Effects of Water Stress on Physiological Characteristics of Mulberry(Morus alba)seedlings in the Hydro-Fluctuation Belt of the Three Gorges Reservoir Area
摘要
Abstract
chlorophyll content of mulberry seedlings was increased by 10. 4% under the drought hardening ( DH) condition than that of CK, while decreased by 3.2% under the waterlogging hardening ( WH ) condition than that of CK. With the soil moisture content reducing, the stomatal conductance ( Gs) and transpiration rate ( Tr) of mulberry seedlings both declined remarkably; The photosynthetic rate (Pn) of mulberry seedlings under the drought hardening and waterlogging hardening conditions was all higher than that of CK, and the intercellular CO2 concentration ( Ci) under the two conditions was lower than that of CK; The instantaneous water use efficiency of mulberry seedlings under the drought hardening and waterlogging hardening conditions was remarkably increased by 57% and 27% than that of CK, respectively, and the abscisic acid (ABA) content in the two conditions were remarkably increased by 79% and 29% than that of CK, respectively.关键词
桑树/苗期锻炼/三峡库区消落带/生理特性Key words
mulberry/ seedlings hardening/ the hydro-fluctuation belt of the Three Gorges Reservoir Area/physiological characteristics分类
农业科技引用本文复制引用
黄小辉,刘芸,李佳杏,熊兴政,尹小华,陈阳,秦俭,黄先智,杜英武..水分胁迫对三峡库区消落带桑树幼苗生理特性的影响[J].林业科学,2012,48(12):122-127,6.基金项目
国家蚕桑产业技术体系项目(ARS-22-ZJ0503) （ARS-22-ZJ0503）
西南大学资源环境学院本科生科技创新"光炯"培育项目(20110104) （20110104）
三峡库区森林生态保护与恢复重庆市市政实验室项目(CSTC,2007CA1001) （CSTC,2007CA1001）
重庆市科技攻关计划项目(CSTC,2011AB1028) （CSTC,2011AB1028）
世界自然基金会(瑞士)项目(10000757-1.3.01.02). （瑞士）
