矮秆多穗型粳稻不育系5016A的选育与利用

Breeding and Utilization of Dwarf Type Japonica CMS Line 5016A with Many Panicles

5016A系浙江省农科院作物与核技术利用研究所以BT型粳稻不育系寒丰A作母本,中熟晚粳稻常规品系5016为父本杂交,经多代回交转育而成,2004年9月通过浙江省科技厅组织的技术鉴定。5016A秆矮穗多,群体不育株率100%,花粉不育度99.98%,以圆败为主;其配合力强,已选配出浙优9号等高产杂交晚粳新组合,应用前景广阔。

5016A, developed by the Crop Research and Nuclear Application Institute of Zhejiang Academy of Agricultural Sciences, is a new BT - type japonica CMS line derived from crossing Hanfeng A with a medium-maturing late japonica rice line 5016 through successively backcrossing method. It was technically identified in Zhejiang Province in September, 2004. It is mainly characterized by dwarf plant （77.5 cm）, many panicles （25.5 panicles per plant） and strong combining ability. It has a complete male sterility with 100% of sterile plants and 99.98% of pollen sterility. A high-yielding hybrid Zheyou 9 （5016MZhehui 9816） has been developed.