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德国Ｇｉｓｅｌａ １ 、５ 、７ 系列矮化砧木在ＭＳ＋ ＢＡ１ ．３２μｍｏｌ 的培养基上能快速增殖，在１／２ ＭＳ＋ ＩＢＡ１ ．５μｍｏｌ 培养基上生根率可达７０ ％ 以上，移栽于温室后的成活率在６０ ％ 以上，从温室移栽到大田的成活率达６５ ％ 。在大田条件下成活６７００ 余株，成功地进行了微体繁殖。离体条件下测定结果表明，Ｇｉｓｅｌａ ５ 、７ 对根癌病的抗性高于Ｃｏｌｔ。
German Gisela 1, 5, 7 series dwarfing rootstocks in MS + BA1. 32μmol medium can rapidly proliferate in 1/2 MS + IBA1. The rate of rooting on the 5μmol medium was more than 70%, the survival rate after transplanting in greenhouse was over 60%, and the survival rate from greenhouse to field was 65%. Survival of more than 6700 plants in the field conditions, the success of the micro-breeding. The results of in vitro assays showed that Gisela 5 and 7 are more resistant to root-knot disease than Colt.