生态学杂志2012，Vol.31Issue(12)：3011-3017,7.
不同立地条件下南方红豆杉幼苗的生长和生理特性
Growth and physiological characteristics of Taxus wallichiana var.mairei seedlings under different site conditions
摘要
Abstract
To clarify the relationships between the growth, photosynthesis, and active oxygen me-tabolism of Taxus wallichiana var. mairei and the environment under different stand conditions, and to approach the habitats suitable for the growth of T. wallichiana var. mairei seedlings, an investigation was made on the growth and physiological characteristics of two-year-old T. wallichi-ana var. mairei seedlings in three different habitats (Camphor stand, Eucalyptus stand, and open space) in Quanzhou of Fujian Province, East China. As compared with those in open space, the plant height and new shoot length of the seedlings in Eucalyptus and Camphor planta-tions were significantly improved, suggesting that woodland habitats benefited the growth of the seedlings. The seedlings chlorophyll b and carotenoid contents, stomatal conductance, transpira-tion rate, and net photosynthetic rate in woodland habitats increased significantly, compared with those in open space. The seedling' s soluble sugar and amino acid contents were higher in wood-land habitats than in open space, while the seedling' s protein contents were in adverse. The SOD and CAT activities of the seedlings in woodland habitats decreased, while the POD activities increased. Our study suggested that open space habitat could cause a strong light stress on T. wallichiana var. mairei seedlings while woodland habitats could provide indispensable shade en-vironment for the seedling growth, and thus, it would be suitable for T. wallichiana var. mairei seedlings growing in Eucalyptus and Camphor plantations.关键词
南方红豆杉/光合特性/活性氧代谢/环境因素Key words
Taxus wallichiana var. mairei/photosynthetic characteristics/reactive oxygen me-tabolism/environmental factor分类
农业科技引用本文复制引用
刘建福,王明元,杨晨,范燕萍,刘春冬,傅建卿..不同立地条件下南方红豆杉幼苗的生长和生理特性[J].生态学杂志,2012,31(12):3011-3017,7.基金项目
国家自然科学基金项目(31101512,30972026)、福建省星火计划项目(2010S0037)、中央高校基本科研业务费专项(JB-ZR1151)和泉州市科技计划重点项目(2010N10)资助. （31101512,30972026）
