Breeding and Application of High-quality Medium Indica PTGMS Line EK8S in Rice
EK8S,derived from the hybridization between a breeding material from C815S as the female and a uniform breeding material from the variant plant of Yuefeng B as the male,is a new photo-thermo sensitive genic male sterile(PTGMS)line in medium indica rice developed through shuttle breeding in Wuhan,Hubei and Lingshui,Hainan by way of fertility screening in low-temperature pool,identification of grain quality in laboratory and selection of agronomic traits in field.The male sterile line possesses the characteristics of low critical sterility-inducding temperature,good plant type,slender grains with high quality,easy multiplication and hybrid seed production and strong combining ability.The hybrid combinations E Liangyou 888,E Liangyou Jinsi and Huiliangyou Yingsi,derived from this sterile line,showed high yield,good grain quality,delightful taste and suitable growth period,and passed the Hubei Province or national variety approval.
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