不同磷效率马褂木种源对磷胁迫的生理反应  

Physiological Response of Liriodendron chinense Provenances with Different Phosphorus Efficiency under Low Phosphorus Stress

作　　者：王剑[1] 周志春[1] 饶龙兵[1] 金国庆[1] 李建民 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]福建省林业科技推广总站,福建福州350003

出　　处：《林业科学研究》2006年第4期527-531,共5页Forest Research

基　　金：福建省科技厅重点项目"马褂木营养高效种源选择及共生菌根研究"(2003N040)

摘　　要：Soil culture experiments at two phosphorus levels were conducted to study the physiological responses(including chlorophyll content,MDA and soluble protein content,and APase activity in roots and leaves) of six Liriodendron chinese provenances with different phosphorus efficiency(PE). The result showed that low phosphorus stress would decelerate seedling growth and leaf development,lessen chlorophyll content and MDA content in leaves,and promote APase activity in root.There existed marked differences in physiological response among provenances with various PE under low phosphorus stress.It was found that the provenances with high PE possessed more and larger leaves,higher chlorophyll and soluble protein content than those provenances with low PE.Change of MDA content in leaves of provenances with high PE was small at two phosphorus levels,which meant the provenances with high PE were more resistive to environment stress.Soil culture experiments at two phosphorus levels were conducted to study the physiological responses （including chlorophyll content, MDA and soluble protein content, and APase activity in roots and leaves） of six Liriodendron chinese provenances with different phosphorus efficiency （PE）. The result showed that low phosphorus stress would decelerate seedling growth and leaf development, lessen chlorophyll content and MDA content in leaves, and promote APase activity in root. There existed marked differences in physiological response among provenances with various PE under low phosphorus stress. It was found that the provenances with high PE possessed more and larger, leaves, higher chlorophyll and soluble protein content than those provenances with low PE. Change of MDA content in leaves of provenances with high PE was small at two phosphorus levels, which meant the provenances with high PE were more resistive to environment stress.

关 键 词：马褂木 种源 磷效率 低磷胁迫 生理反应 

分 类 号：S722.3[农业科学—林木遗传育种]