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ＢＡ（０、０．５、５和１０（１０－６））、ＮＡＡ（０、０．００５、０．０１、０．１和１（１０－６））和增殖时间（６、８和１０周）对四种蔷薇属种间杂交品种ｃｈａｍｐｌａｉｎ、ＪｏｈｎＦｒａｎｋｌｉｎ、ＪｏｈｎＰａｕｌⅡ和Ｌａｎｄｏｒａ最适繁殖条件的影响进行了研究。一般地说当培养基中植物生长调节剂浓度低或高时，ＢＡ和ＮＡＡ两者对能存活的试管苗比例和繁殖率都有显著的影响。高于０．１（１０－６）ＮＡＡ可显著地降低其中两个品种的繁殖率。繁殖率和品种间对ＢＡ、ＮＡＡ的浓度和培养时间没有一致的反应。因此提出为了获得每一个品种的试管苗数量，要确定每一个变量。
BA (0, 0.5, 5 and 10 (10-6)), NAA (0,0.005,0.01,0.1 and 1 (10-6)) and proliferative time Zhou) The effects of the optimum breeding conditions of Champlain, JohnFranklin, JohnPaulⅡ and Landora on four interspecific hybrids between two rose species were studied. In general, both BA and NAA have a significant effect on viable survival of plantlets and reproductive rate when plant growth regulators are low or high in the medium. NAA levels above 0.1 (10-6) significantly reduced the reproductive rate of two of these species. Reproductive rate and variety between BA, NAA concentration and culture time are not consistent response. Therefore, it is proposed to determine each variable in order to obtain the number of test tube seedlings for each variety.