葡萄抗旱性鉴定及其遗传倾向分析

Identification of Drought Resistance and Analysis of Genetic Tendency of Grape

在干旱胁迫下,本文测定了葡萄3个杂交组合5个亲本和126个F1代植株的主蔓生长量、叶片相对含水量和叶绿素含量及细胞质膜透性,综合评价了亲本及F1代的抗旱性,并分析了F1代抗旱性遗传倾向。结果表明,亲本‘火州黑玉’为中抗型,‘火州紫玉’、‘红宝石无核’和‘红地球’为低抗型,SP522为不抗型;126株杂交后代中抗型单株6株,低抗型单株117株,不抗型单株3株;F1代抗性呈现连续变异,表现为数量遗传的特征,亲本抗性强的组合获得抗旱杂交单株的几率大。

The study determined the degree of growth of the main vines, relative water content, chlorophyll content, and plasma membrane permeability in the leaves of the grape（Vitis vinfera） plants of 5 parents and 126 F1 generations of 3 cross combinations, comprehensively evaluated their drought resistance, and analyzed the genetic tendency of the drought resistance of F1 generation under drought stress. The results showed that grage ‘Huozhouheiyu＇ was middle-resistance type; ‘Houzhouziyu＇, ‘Ruby seedless＇, and ‘Red globe＇ were low-resistance type; SP522 was non-resistance type. There were 6 mid-resistance plants, 117 low-resistance plants, and 3 non-resistance plants in the 126 of F1 generations. There was the characteristic of demonstrated continuous heteromorphosis of drought resistance and quantitative inheritance in F1 generations, and there was more chance to get the panlts of resistance drought in the cross combinations with high-resistance parents.