安徽农业科学2011，Vol.39Issue(10)：5791-5793,3.
铝胁迫对黄芩幼苗气孔特性及光合作用的研究
Effects of Aluminum Stress on the Stomatal Characteristics and Photosynthesis of Scutellaria baicalensis Georgi Seedlings
李亚敏 1刘建中 1史永博 1张峰1
作者信息
- 1. 陕西广播电视大学理工部,陕西西安,710069
- 折叠
摘要
Abstract
[ Objective ] To discuss the effects of aluminum stress on the stomatal characteristics and photosynthesis of Scutellaria baicalensis Georgi seedlings,so as to provide a theoretical basis for revealing the aluminum toxicity mechanism on plants. [ Method ] Scutellaria baicalensis Georgi seedlings at 6 true-leaf stage were treated with different concentrations of aluminum at 0.1, 0.5, 2.0 and 5.0 m mol/L. After 30 days,the leaves were harvested for determining stomatal characters including area and density, and photosynthesis indexes such as net photosynthetic rate, transpiration rate and stomatal conductance. [ Results ] Aluminum stress could lead to significantly reduce the stomatal length,stomatal width and stomatal area,but stomatal density was improved. The net photosynthetic rate,transpiration rate and stomatal conductance decreased significantly with the increase in aluminum concentration,but the intercellular CO2 concentration was significantly increased. [ Conclusions ] It was non-stormatal factors which leaded to the restraint of photosynthesis; meanwhile high-concentration aluminum might result in the bad effects on the adaptability of Scutellaria baicalensis Georgi to environment.关键词
黄芩(Scutellaria baicalensis Georgi)/幼苗/铝/气孔特性/光合作用Key words
Scutellaria baicalensis Georgi/Seedlings/ Aluminum/ Stomatal characters/ Photosynthesis分类
农业科技引用本文复制引用
李亚敏,刘建中,史永博,张峰..铝胁迫对黄芩幼苗气孔特性及光合作用的研究[J].安徽农业科学,2011,39(10):5791-5793,3.
