【摘要】 通过３０ｋｅＶ不同剂量的Ａｒ＋注入和ＤＮＡ溶液浸滴法将比克氏棉和红麻ＤＮＡ导入泗棉２号。结果表明：离子注入可显著地促进外源ＤＮＡ导入受体，增加受体后代性状的变异频率和变异类型，而且多数变异可迅速趋于稳定。在供试剂量中，以２×１０１５Ａｒ＋／ｃｍ２介导外源ＤＮＡ引起受体性状变异的频率最高，达１６．２％。经选育已获得了一批抗枯萎病、早熟、种子少腺体和优质等各具特色的陆地棉新种质系。更多还原

【Abstract】 The exogenous DNAs of G.bickll P. and H.Cannabinus were introduced into the upland cotton Si 2 by Ar +implantation and DNA solution trickling method. The results showed that the exogenous DNA introduction was promoted significantly and the types and frequencies of character variation in progeny were increased by Ar + implantation. Furthermore, most of the variation tend to be stable. Among the Ar +implantation doses tested, 2×10 15 Ar +/cm 2 was the best for introducing exogenous DNA and inducing character variation, the variation rate reached to 16 2%. Some new lines with character of resistance to wilt disease,early maturity, few gland in seed and fine fiber quality have been obtained.更多还原