摘要： 光合速率、蒸腾强度、水分利用率是植物生理生态学常用的研究指标。本研究试图运用这些生理生态指标作为葡萄引种的选择标准之一,判断引种葡萄是否适应当地环境,从而在引种早期选出适应当地环境的合适品种。7个国外或者华东地区的葡萄品种被引种到中央民族大学宁夏贺兰实验基地,品种随机区组排列,大田种植,田间管理条件一致。在2009、2010年生长季节,对各葡萄品种实生苗进行光合-光响应曲线测定。PPFD 0～2000μmol/(m².s),品种克瑞生和乍那表现出较高的光合速率、较低的蒸腾强度,从而得到较高的水分利用率。两个品种的生长速率较其他品种有显著的差异。这些特点使其适应当地光照充足、干旱、生长季节短的环境。

关键词: 光合速率, 蒸腾强度, 光合水分利用率, 生长速率, 葡萄

Abstract: Photosynthesis,transpiration,water use efficency have been widely used in the studies of plant ecophysiology.The objective of this work is to seek the possibility of using these parameters as one of criteria for selecting suitable introduced grape cultivars after them introduced into a newly area,so that the suitable cultivars can be screened out at an early stage.With this objective,photosynthetic light response curves of six grape cultivars,which introduced into experimental site from home or abroad,in sapling developmental stages were measured in the open field conditions in 2009-2010 at Helan Research Base,Minzu University of China,Ningxia,China using a randomised complete block design.Following an increase in PPFD from 0 to 2 000 μmol/(m2·s),two grape cultivars,Crimson and Zana showed higher photosynthetic water use efficiency,supported by higher carbon assimilation capacities,achieved partly through lower transpiration rate,with higher growth rate observed in the field,to help suit to a shorter growing season and arid environment,suggesting that photosynthetic water use efficency could be used as an useful criteria for choosing suitable grape cultivars in the early growth stage in arid region.

Key words: Photosynthesis, Transpiration, Photosynthetic water use efficiency, Growth rate, Grape cultivar

中图分类号: 

• S663.03