优质籼稻三系不育系秦康ⅠA的选育

Breeding of Quality Indica CMS Line Qinkang Ⅰ A

秦康ⅠA是陕西省安康市农业科学研究所从粤丰A与(扬稻4号/中籼2490)后代中间材料的测交F1中分别选择可育单株与不育单株成对回交选育而成的籼型三系不育系。该不育系植株整齐一致,农艺性状优良,育性稳定,不育株率100%,花粉不育度99.9%,柱头外露率高,异交结实率较高,配合力好,米质优。2011年7月通过陕西省农作物品种审定委员会技术鉴定。

Qinkang Ⅰ A is a new indica CMS line in rice developed by Ankang Agricultural Research Institute through making crosses in pair with male sterile plants and fertile ones among the F1 generation of Yuefeng A and the progeny of Yangdao 4/Zhongxian 2490.It is uniform in plant morphology with elite agronomic characters and has good grain quality and high combining ability.Its male sterility is complete and stable with 100% of sterile plant rate and 99.9% of pollen sterility.It has a high rate of exserted stigma and a high outcrossing rate.In July,2011,it was technically identified by Shaanxi Provincial Crop Variety Appraisal Committee.