黔西北山区高产耐寒粳稻新品种毕粳41号选育研究

毕粳41号系贵州省毕节地区农业科学研究所针对黔西北高海拔高寒山区生态条件和稻作生产实际采用目标亲本选择、定向单株培育而成的高产、抗寒粳稻新品种。该品种在2000—2001年两年的贵州省粳稻区试中，平均较对照毕粳37号增产8.34%，在2002年的贵州省粳稻生产试验中，平均较对照毕粳37号增产11.58%。全生育期170d左右，株高95.0~105.0cm，有效穗292.5万/hm2左右，平均穗粒数110~140粒，结实率85%以上，千粒重26~28g。稻米品质测试分析，该品种是一个低直链淀粉软米品种。2003年7月通过贵州省农作物品种审定委员会审定。

Breeding Research on New High-yielding and Low-temperature Resistant Japonica Variety Bijing 41 in Southwest Mountain-area of Guizhou

Using target-parent selection and directive single-plant breeding, new high-yielding and low-temperature resistant japonica variety Bijing 41 was breed by Bijie district agriculture institute of Guizhou to counter ecological conditions and rice cultivation production reality of high-altitude and low-temperature mountain area in northwest Guizhou. It increased yield with 8.34% than the contrast Bijing 37 in japonica cultivars regional trail of Guizhou and increased yield with 11.58% than the contrast Bijing 37 in japonica cultivars production trail of Guizhou. Its whole growing period is about 170d,plant height is 95.0~105.0cm, effective panicles is about 292.5 myriad/hm2, mean grains per panicle is 110~140, seed setting rate is above 85% and 1000-grain weight is 26~28g. Rice quality measure analysis showed that Bijing 41 is a low amylose soft rice variety. It was examined and approved by the crops variety examine and approve committee on July in 2003.