Effect of Water Stress on Leaf Photosynthesis Characteristics and Water Use Efficiency in Jujube in Tarim Basin
The current study investigated the effect of water stress on photosynthesis characteristics and water use efficiency of Jujube in extreme arid condition, a field study was conducted in the drip irrigated Jujube in Xingfucheng farm, South Xingjiang China. Four water supply treatments consisted of (Wl) moderate water stress at 260 m3/667m2, (W2) light water stress at 320 m3/667m (W3) appropriate water at 380 m3/667m2, and (W4) sufficient water at 440m3/667m2. A portable LI-6400 photosynthesis system was used to determine Pn, Tr, Gs, Ci, Ta, Ca, RH, PAR and Jujube leaf WUE at August 8, 2010. PAR, RH, Ta and Ca differed significantly amongst four water treatments at 0.01 level; Pn differed significantly amongst four water treatments at 0.5 level, whereas there was no difference in Tr. Compared with W3, the WUE of Wl, W2 and W4 differed significantly, the WUE of W2 treatment increased 2.65％, whereas Wl and W4 treatments decreased 14.90 and 18.20％ respectively. The result indicated that Jujube can adapt to extreme arid condition, and the proper water amount of drip irrigation was about 320m3/667m2.
jujube water stress photosynthesis characteristics water use efficiency Tarim basin
Wan Sumei Wu Quanzhong Wen Qinglin Hu Shoulin
College of Plant Sciences, Tarim University, Alar, Xinjiang, China 843300, china
国际会议
The 3rd Conference on Key Technology of Horticulture(第三届园艺关键技术学术会议 CKTH 2011)
沈阳
英文
298-303
2011-12-17（万方平台首次上网日期，不代表论文的发表时间）