葡萄砧木抗寒生理指标测定及其评价应用

The Physiological Indicators of the Cold Resistance and the Evaluation on Grape Rootstocks

以13个葡萄砧木品种的1年生枝条为试材,测定不同低温胁迫下葡萄枝条电导率、可溶性糖含量和游离脯氨酸含量3个指标,进行抗寒性分析,以期为西北葡萄种质资源筛选和抗寒栽培提供参考依据。结果表明:13个酿酒葡萄砧木品种枝条的半致死温度在-24.5^-32.0℃;随着处理温度的降低,各品种枝条的游离脯氨酸含量和可溶性糖含量逐渐升高,递增的速度和幅度存在一定差异,且递增幅度大小与抗寒性强弱一致;‘山葡萄’、‘贝达’、‘5BB’和‘520A’抗寒性较强,‘140R’、‘5C’和‘抗砧3号’抗寒性较弱,其它品种抗寒性中等。

Taking the annual dormant branches of 13 grape rootstocks as test materials,the electrical conductivity,soluble sugar and free proline content after low temperature stress were measured,the freezing tolerance was analyzed,to provide reference for germplasm screening for northwest grape and cold resistance cultivation.The results showed that,the semi-lethal temperature of the all species branches were from-24.5℃to-32.0℃;With the temperature decreased,the soluble sugar and free proline in their branches were gradually increased,but the change speed and range were significantly different among varieties;The order of species parameters was consistent with the cold resistance;Vitis amurensis,‘Beta＇,‘5BB＇and‘520A＇showed greater cold-resistance ability,but the‘140R＇,‘5C＇and‘Kangzhen No.3＇were weaker in all species.