具互作型弱感光特性的籼稻不育系金稻13A的选育

Breeding of Indica CMS Line Jindao 13A Characterized by Interactive Weak Photosensitivity

金稻13A是通过人工制保(金23B×博B)并与博A回交转育而成的具野败型不育胞质的互作型弱感光籼稻不育系。该不育系育性稳定,株叶型较好,配合力强,穗大粒多,着粒密,直链淀粉含量适中,软胶稠度和低糊化温度,开花习性与异交结实性好,繁殖制种产量高,于2006年10月通过了广东省技术鉴定。所配杂交稻具有弱感光特点,产量高,品质较优,后期熟色好,抗寒性强,其中金稻优122、金稻优368和金稻优998分别于2008年、2009年和2010年通过了广东省品种审定。

Jindao 13A is developed by crossing the maintainer plants from the progeny of Jin 23B/Bo B to Bo A followed by successive backcrosses.It is a WA-type indica CMS line with the characteristic of interactive weak photosensitivity in rice.It has stable male sterility,good plant type,high combining ability,large panicles with many spikelets,an intermediate amylose content,soft gel consistency,low gelatinization temperature and good flowering habits with a high outcrossing rate and multiplication and hybrid seed production yield.In October,2006,it was technically identified in Guangdong Province.Its hybrids show the characteristics of weak photosensitivity,high yield,good grain quality,good cold tolerance and insenescence in late growing stages.Among them,Jindaoyou 122,Jindaoyou 368 and Jindaoyou 998 were certified and released to commercial production by Guangdong Provincial Crop Variety Appraisal Committee in 2008,2009 and 2010,respectively.