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吉丰A是利用分子标记辅助选择技术将广谱抗瘟基因Pi-1导入荣丰B,然后再与荣丰A连续回交转育而成的三系不育系,2011年6月通过广东省种子管理总站组织的技术鉴定。吉丰A表现株型集散适中,不育性稳定,配合力强,高抗稻瘟病,柱头外露率高,异交结实率高,对“九二○”敏感,易于繁殖制种。利用该不育系已经组配出吉丰优512、吉丰优1002、吉丰优1008和吉丰优3550等多个组合于2013年通过广东省品种审定。
Ji Feng A is a molecular marker-assisted selection technology will be broad-spectrum anti-blast gene Pi-1 into Wing Fung B, and then with Wing Fung A continuous backcross from the three-line sterile line, in June 2011 through Guangdong Provincial Seed Management Station Organization of the technical appraisal. Ji-Feng A performance of plant-type distribution of moderate, sterile stability, with strong, high resistance to blast, stigma exposed rate, outcrossing rate, sensitive to “920 ” seed easy to reproduce. The CMS line has been used in combination with a combination of Ji Feng You 512, Ji Feng You 1002, Ji Feng You 1008 and Ji Feng You 3550 and other combinations in 2013 through the Guangdong province variety validation.