Comparison and analysis of physiological characters of several plants in Karst peak-cluster Mountain Area.
Deng XinHui, Jiang ZhongCheng, Shen LiNa, Wu KongYun, Qin XinMing, Yang XinWen, Deng Yan
Author Affiliation: Institute of Karst Geology, CAGS, Guilin, Guangxin 541004, China.
Research of Agricultural Modernization 28 : 763-766
Abstract : The photosynthesis, transpiration, water use efficiency (WUE), and some relationships to environmental factors of Jinyinhua (Lonicera japonica), loquat, mango and litchi (Litchi chinensis) in South Karst Mountain Area (Guangxi, China) were studied to indicate the physiological characters of the 4 plants to provide some theory of vegetation restoration. The photosynthesis, transpiration and WUE of Jinyinhua were the highest; the curves of photosynthesis and transpiration had a 2-peak pattern, i.e. 'midday nap'. The photosynthesis and transpiration of loquat reached the maximum value at 12.00 h; its transpiration was mostly affected by water. The photosynthesis and transpiration of mango reached the maximum value at 14.00 h and was limited by stomata. The photosynthesis and transpiration of litchi were the lowest. Therefore, Jinyinhua consumes a lot of water and needs more cultivation, but its root system is huge and is good to be used to prevent soil erosion. Loquat needs enough water so it should not be planted in dry karst region. Mango is fit to plant in weak light place. The correlation of litichi's photosynthesis and transpiration with environmental factors is small.