不同砧木对红地球葡萄光合日变化的影响  

Effects of different rootstocks on diurnal variation of photosynthesis of Red Globe grape

作　　者：马玉坤[1] 贾永芳[1] 马静芳[2] 王旺田[2] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453007 [2]甘肃农业大学生命科学技术学院,甘肃兰州730070

出　　处：《江苏农业学报》2012年第3期638-642,共5页Jiangsu Journal of Agricultural Sciences

基　　金：甘肃省农业生物技术项目(GS022-A41-046);甘肃省科技厅项目(0805XCNR064);河南省教育厅自然科学基金项目(2010B360002)

摘　　要：为探明影响葡萄光合作用的主要环境因子,进一步为选择优良葡萄砧木和探讨砧-穗互作的机理提供理论依据,以葡萄品种少毛变叶294(LDP-294)、贝达为砧木,品种红地球为接穗,利用CI-310便携式光合测定仪测定自然条件下红地球葡萄2种嫁接组合和自根苗的净光合速率(Pn)、蒸腾速率(E)、气孔导度(Gs)、光合有效辐射(PAR)和胞间CO2浓度(Ci)。结果表明:2种嫁接组合在晴天的净光合速率、蒸腾速率的日变化均呈单峰曲线,光合有效辐射、胞间CO2浓度均为双峰曲线;而自根苗除气孔导度外,其他因子均为单峰曲线;2种嫁接组合的净光合速率明显高于自根苗的净光合速率。气孔导度和蒸腾速率是光合作用的主要影响因子,不同砧木嫁接的红地球葡萄光合特性有明显差异,贝达、LDP-294砧木能明显提高光合能力。The purpose of this study was to determine the effects of environmental factors on grape photosynthesis so as to offer the theoretic basis for choosing and application of rootstock in production, and discuss the mechanism of root- stock-scion interaction. The grapevine of Red Globe grape taken as scion was grafted onto different rootstocks, LDP-294 （ Vitis piasezkii Maxim. var. pagnucii） and Beida. The net photosynthetic rate （Pn）, transpiration rate （E）, stomatal con- ductance （Gs ）, photosynthetic active radiation （PAR）, and intercellular CO2 concentration （Ci） of two grafted euhivars and self-rooted individuals of Red Globe grape were measured with portable Ci-310 gas analysis system under natural condi- tions. The results showed that the daily variation of net photosynthetic rate and transpiration rate in the leaves of two grafted cuhivars appeared single-peak curve, while photosynthetic active radiation and intercellular CO2 concentration appeared double-peaks curve. The daily variation of all the indices except for stomatal conductance rate appeared single-peak curvein self-rooted. The net photosynthetic rates of the two grafted cultivars were higher than that of self-rooted. The stomatal conductance and transpiration rate were the two dominant factors affecting the photosynthesis of Red Globe grape. The photosynthetic performances of Red Globe grape grafted with different rootstocks varied. The root- stocks of LDP-29d and Beida could apparently increase the photosynthetic capacity of Red Globe grape.

关 键 词：红地球葡萄 嫁接 光合特性 光合速率 日变化 

分 类 号：S663.1[农业科学—果树学]