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为满足苹果生产对营养系砧木和品种自根苗越来越广泛的需求,近年来,许多果树科技工作者进行了苹果属资源材料的繁殖试验研究,取得了较好进展。如苏联等(1982)用绿枝扦插培育苹果营养系砧木获得生根苗;日本金泽升等(1980)用苹果半矮化
In order to meet the growing demand of apple rootstocks and rootstocks from apple seedlings in recent years, many fruit tree technologists have carried out researches on the reproduction of apple tree materials and made good progress. Such as the Soviet Union (1982) with green shoots to cultivate apple rootstocks to obtain rootstocks; Japan Kanazawa (1980) with apple dwarf