Effects of Water Stress on Photosynthesis in Loquat Trees
Luo Huajian and Liu Xinghui(Department of Horticulture, Fujian Agricultural University, Fuzhou 350002)
Experiment was conducted with grafted plants of two loqaut varieties(Jiefangzhong andChang hong No. 3). Under water stress condition, the content of photosynthetic pigments in theleaves reduced, chlorophyll b was damaged easier than chlorophll a or carotenoid ; light compensation piont increased, while light saturation reduced; stomatal conductance, transpiration and netphotosynthesis rate (Pn) were restrained, Pn was induced by both stomatal factors and non-stom-atal factors.