水稻光温敏核不育系“635s”的选育

通过对“M58s/ 871 0 8-1”的后代进行多年育性观察和定向选择 ,育成光温敏核不育系“63 5s”。该不育系在宜春的不育期长达 60d以上 ,不育度达 99.9%～ 1 0 0 % ,对低温反应钝感。在可育期 ,其自交结实率达 60 %以上。用于籼粳亚种间强优势组合的选育 ,具有广亲和性、配合力强、米质优等特点。

Breeding of Photo-thermo-sensitive Genic Rice Sterile Line "635s"

s" developed from the cross between "M58s" and "87108-1" is a photo-thermo-sensitive genic rice sterile line,its sterile duration is more than 60d in Yichun. In the sterile period,its sterile rate reaches to 99.9%～100%,it is not sensitive to short low temperature (21.5～23.5℃).In the fertile period,its setting rate is over 60%.The hybrids from the crossing between "635s" and indica rice varieties possess high setting rate and fine rice quality,it indicates that "635s" has wide compatibility and strong combining ability.;