水稻光温敏核不育系LY172S的选育

Breeding of Photo Thermo Sensitive Genic Male Sterile (PTGMS) Line LY172S of Rice

[目的]为籼型光温敏核不育系LY172S在水稻育种中的进一步应用奠定基础。[方法]介绍LY172S选育过程、特征特性、育性表现、抗病性、米质、可繁性与繁殖技术要点、配组情况。[结果]LY172S是以1892S为母本,以协青早B为父本杂交选育而成的籼型光温敏核不育系,不育性稳定、起点温度低、异交结实率高、米质好、配合力强。2012年安排了华中农业大学植物科学技术学院组织的人工光温育性鉴定,2012年8月通过安徽省品种审定委员会组织的专家鉴定。[结论]LY172S在今后的水稻育种中有广阔的应用前景。

[Objective] The aim was to lay a basis for further application of PTGMS line LY172S during rice breeding.[Method] The breeding process,characteristics,sterility performance,resistance to disease,rice quality,reproductive performance and key reproduction technique points,combination status of LY172S were introduced.[Result] LY172S,derived from the cross of 1892S/XieqingzaoB,is a new indica-type PTGMS line.It＇ s developed by Anhui Greenrain Seed Co.Ltd..It is of stable sterility,low critical sterility temperature,high outcrossing rate,good grain quality,and good combination ability.LY172 were registered and approved for production and application by assessment panel of Anhui Provincial Crop Variety Appraisal Committee in 2012.[Conclusion] LY182S has a wide application prospect during rice breeding in future