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利用异位胚作为识别标准,对2094份国内外品种进行了双(多)胚或双(多)生苗的筛选鉴定,结果发现双A32、双A33、双A34、双A35和双A40等5个品系双(多)苗频率较高,达10.86%～20.14%。将这5个品系分别与显性遗传标记紫色稻进行正反交测验表明,正交F1其绿苗应是由不定胚形成的,其植株在形态特征、结实率、千粒重等与母本相似,反交F1则均为紫苗;对18个双苗品系在不授粉的情况下通过化学药物诱导孤雌生殖,诱导率较高的仍是双(多)胚苗自然频率较高的品系。
Using ectopic embryos as the identification standard, we screened and identified 2094 domestic and foreign varieties of double (multiple) embryos or double (multiple) seedlings. It was found that double A32, double A33, double A34, double A35 and double A40 A strain of double (more) Miao frequency higher, up 10.86% ~ 20.14%. The reciprocal crosses between the five lines and the dominant genetic marker purple rice showed that the green seedlings of orthogonal F1 should be formed by adventitious embryos. The morphological characteristics, seed setting rate, 1000-grain weight, Anti-cross-F1 were purple seedlings; 18 pairs of seedlings in the case of non-pollination by chemical drugs to induce parthenogenesis, the higher the induction rate is still double (more) germ higher natural frequency lines.