期刊
BIOLOGIA PLANTARUM
卷 43, 期 3, 页码 455-457出版社
ACAD SCI CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1023/A:1026752023454
关键词
Medicago sativa; photosynthetic rate; salinity; stomatal conductance; transpiration rate; water use efficiency
The influence of saline water (4, 8, 12 dS m(-1)) irrigation on gas exchange and growth response of alfalfa genotypes Anand-2, T-9 and IL-112 was studied. T-9 and IL-112 showed a significant increase in net photosynthetic rate (P-N) at low salinity (4 dS m(-1)) compared to the control whereas Anand-2 maintained an unaltered P-N Reduction in P-N at higher salinities was primarily due to reduction of stomatal conductance. There was a greater reduction in transpiration rate as compared to P-N rate, which resulted in an increase in water use efficiency (WUE). High WUE may serve as one of the strategies of the plant to withstand saline environment. However, the slight increase in WUE in Anand-2 could not help in maintaining its growth. Increase in Na+ concentration in comparison to K+ concentration may also contribute to the inhibition in growth.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据