运轮1号玉米群体轮回选择改良效果  

Improved Effects of Maize Population Yunlun No. 1 by Recurrent Selection Method

作　　者：陈朝辉[1] 王安乐[1] 解翠萍[1] 董喜才[1] 党德宣[2] 韦晋晋 赵晋鹏 

机构地区：[1]山西省农业科学院棉花研究所,山西运城044000 [2]山西省农业科学院农业资源与经济研究所,太原030006 [3]山西鑫农奥利种业有限公司,山西长治046000

出　　处：《中国农学通报》2014年第33期26-30,共5页Chinese Agricultural Science Bulletin

基　　金：山西省科技攻关项目"大群体高产耐密抗逆玉米种质创新利用研究"(20110311002-7);山西省农业科学院育种工程项目"耐高温杂交玉米新品种选育""玉米基础群体种质轮回选择改良利用"(11yzgc093;11Yyzjc1106))

摘　　要：种质资源遗传基础狭窄是制约玉米育种的重要因素,而群体轮回选择是拓宽玉米资源遗传多样性的重要方法。以具有中国reid血缘的8个自交系组成的群体和美国坚秆种质群体BSSS杂交后经过一轮混合授粉形成运轮1号玉米群体。3轮混合选择后,以昌7-2为测验种分析了运轮1号群体的产量性状的配合力。结果表明,群体内单株间产量配合力差异显著,遗传变异较丰富。从138个测交种中筛选出20个较优良的对应自交单株作为新一轮轮回选择的亲本。预计新一轮合成群体产量配合力将提高11.6%,灌浆脱水速率较对照优越,其他农艺性状也得到相应改良。The narrow genetic background is the first constraint factor of maize（Zea mays L.）. It is essential tobroaden the genetic diversity of maize resources through recurrent selection. Yunlun No. 1 germplasm popula-tion derived from the mixed pollination after crossing the U.S. firm rod BSSS population with the populationcomposed of eight inbred lines with Chinese Reid blood. After conducting three mixed selection,Chang 7-2was used as test varieties to analyze the combining ability of the Yunlun No. 1 germplasm population＇s yieldtraits. The results show that the population has rich genetic variation and there are significant differencesamong the individual plants of population. Twenty excellent selfing plants are selected from 138 test varietiesas a new round of reincarnation parent correspondingly. It is expected that the yield combining ability of thenew round of composite population will increase by 11.6%, milking and dehydration rate will be superior to thecontrol and agronomic traits will also be improved accordingly.

关 键 词：运轮1号 轮回选择 配合力 玉米 群体 

分 类 号：S-3[农业科学]