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苹果矮化砧木‘青矮1号’是以‘M2’为母本,‘M9’为父本杂交选育而成。树冠较小,节间长1.6cm。嫁接基砧的成活率84.0%,嫁接品种的成活率87.8%,3年生矮化中间砧果苗出圃率73.8%。嫁接的‘红富士’盛果期树高2.93m,冠径3.10m;嫁接口无肿大,不发生气根,品种/中间砧的干周比值0.95;2年生结果株率61.5%,7～14年生树平均产量43380kg·hm-2,果实可溶性固形物14.9%,硬度8.3kg·cm-2,果形指数0.86。适宜在山东、河北、山西、陕西等矮化苹果主产区应用。
Apple dwarfing stock ’Qingai 1’ is based on ’M2’ as the female parent and ’M9’ as the male parent. Small crown, internode length 1.6cm. Grafting base anvil survival rate of 84.0%, grafted species survival rate of 87.8%, 3-year-old dwarfing intermediate anvil seedling nursery rate of 73.8%. Grafted ’Red Fuji’ full fruit period tree height 2.93m, crown diameter 3.10m; grafted interface no swelling, no rooting, variety / rootstock ratio of dry weeks 0.95; 2 year results in 61.5% of plant strains, 7 ~ The annual average yield of 14-year-old tree was 43380kg · hm-2, soluble solids content was 14.9%, hardness was 8.3kg · cm-2, fruit shape index was 0.86. Appropriate in Shandong, Hebei, Shanxi, Shaanxi and other dwarfing apple main producing areas.