标题：Effects of soil moisture and light intensity on ecophysiological characteristics of Amorpha fruticosa seedlings
作者：Zhang Xiu-ru; Tan Xiang-feng; Wang Ren-qing; Xu Nan-nan; Guo Wei-hua
作者机构：[Zhang, X.-R] Institute of Ecology and Biodiversity, College of Life Sciences, Shandong University, Jinan, 250100, China, Clinical College of Tianjin 更多
通讯作者地址：[Guo, WH]Shandong Univ, Coll Life Sci, Inst Ecol & Biodivers, Jinan 250100, Peoples R China.
关键词：Amorpha fruticosa;ecophysiological characteristics;light intensity;seedling;soil moisture
摘要：We investigated the combined effects of soil moisture and light intensity on the growth, development and ecophysiological characteristics of one-year old Amorpha fruticosa seedlings. Soil moisture and light intensity influenced the ecophysiological characteristics of Amorpha fruticosa seedlings. Soil moisture resulted in the decreases of growth rate, individual size, net photosynthetic rate, transpiration rate, leaf water loss rate (WLR), and biomass accumulation of plant parts, and led to increased leaf water saturation deficit (WSD). Under water stress, more photosynthetic products were allocated to root growth. With decreasing light intensity, net photosynthetic rate, transpiration rate, chla/b, water saturation deficit, water use efficiency, water loss rate and biomass accumulation declined, while Chla, Chlb, Chla+b and carotenoids (Car) increased and more photosynthetic products were allocated to stem and leaf growth. Maximum growth vigor, net photosynthetic rate and total biomass accumulation in Amorpha fruticosa seedlings was recorded at 75-80% soil water-holding capacity and 100% light density in greenhouse environments.