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威优四九是我省安江农校1983年用V_(20)A×测64—49选育定型的杂交水稻新组合。该组合父本测64—49是从测64父本中选择的早熟优良株,经过多代分对测交和系选而育成,因而威优四九基本上保持了威优六四的性状,而且还具有熟期比威优六四早、植株比威优六四矮、千粒重大、父本恢复力强等优良性状,较好地解决了多穗和大穗、粒重和结实率的矛盾,日产量和产量都较高,是我省目前较理想的杂交早稻新组合。
Weiyoujiujiu Anjiang Agricultural School in 1983 with V_ (20) A × 64-49 breeding selected new hybrid rice combination. The combination of the parental test 64-49 is selected from the measured 64 male parent early good strains, after multiple generations of the test and the Department of selection and bred, so youyoujiu basically maintained the characteristics of Weiyou 64, But also has good maturity earlier than Weiyouxu, the plants are more than Weiyou Si 4 dwarf, a thousand-grain, strong male restorer and other excellent traits, and better solve the more spike and panicle, grain weight and seed setting rate of the conflict , The daily output and output are higher, is the province’s current ideal hybrid new combination of early rice.