节水抗旱细胞质雄性不育系沪旱5A的选育与应用

Breeding and Utilization of Water-saving and Drought-resistance Cytoplasmic Male Sterile Line Huhan 5A

沪旱5A是以沪旱1B与川香29B杂交,在F_4代选择优良单株与沪旱1A测交并经多代回交转育而成的节水抗旱细胞质雄性不育系,于2013年通过上海市农作物品种审定委员会鉴定。沪旱5A保持了沪旱1A抗旱性好、米质优良的特点,柱头外露率、异交结实率显著提高,与旱恢49、旱恢840配制的组合沪优549、旱优540于2019年分别通过湖北省和上海市品种审定。

Huhan 5A is a water-saving and drought-resistance cytoplasmic male sterile line,developed from the continuing backcrossing between Huhan 1A and the selected excellent single plant in F4 generantion of Huhan1B crossed with chuanxiang 29B,and identified by Shanghai Crop Variety Approval Committee in 2013.Huhan 5A shows the drought resistance and grain quality as Huhan 1A,but significantly increase the stigma exsertion rate and outcrossing rate.Two new hybrid combination,Huyou 549 and Hanyou 540,were registered and released in Hubei and Shanghai respectively in 2019.