论文部分内容阅读
庆1A是重庆中一种业有限公司用Q2B与越南抗稻瘟病材料X21杂交,F2代中选单株与美国材料Lemont复交,F4代再与野败型不育系Q2A测交并连续回交育成的优质籼型不育系,该不育系异交习性好,米质优(达国标1级),配合力强,中抗稻瘟病,2007年8月通过重庆市技术鉴定。用该不育系配组育成的杂交中籼新组合庆优78(庆1A/R78)产量高,抗病性较好,于2010年1月通过重庆市农作物品种审定。
Qing 1A is a Zhongye Co., Ltd. of Chongqing with Q2B cross with the rice blast resistant material X21 in Vietnam, selected F2 plants in the United States and the United States Lemont complex cross, F4 generation and wild-type CMS Q2A cross test and continuous backcross breeding Good quality indica CMS line, the male sterile line with good heterosis, rice quality (up to the national standard 1), with strong ability to fight blast in August 2007 by the Chongqing Municipal Technical appraisal. The new indica hybrid rice combination Qingyou 78 (Qing 1A / R78) which was bred by this CMS line had high yield and good disease resistance, and passed the examination of crop varieties in Chongqing in January 2010.