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黔辐53和黔辐54系γ射线诱变桂朝2号育成的两个姊妹系,是产量与原种相当,生育期提早、抗性和米质有所改善、适应范围扩大、而仍保持优良株叶型的高产品种。 一、选育经过 1979年用钴60-γ射线3万伦琴剂量(剂量率98.7伦/分)照谢桂朝2号干种子,M_1代将结实不良穗子上的种子混收,次年M_2代单株栽播2500,从中选择不同变异类型
Two sister lines of Qianfu 53 and Qianfu 54 were induced by γ-ray mutagenesis of Guizhao No. 2 with the same yield as the original species, earlier growth period, improved resistance and quality, wider range of adaptation, and still maintained Excellent strains of high-yielding varieties. First, breeding After 1979 with cobalt 60 gamma rays 3 million Roentgen dose (dose rate of 98.7 Lun / min) Gui Chai No. 2 dry seeds, M_1 generation will be bad seed on the poor seed collection, the following year M_2 generation of plants Planting 2500, from which to choose different types of mutation