8个合成群体改良玉米杂交种郑单958的育种潜力分析

doi:10.3724/SP.J.1005.2013.01007

遗传 ›› 2013, Vol. 35 ›› Issue (8): 1007-1013.doi: 10.3724/SP.J.1005.2013.01007

8个合成群体改良玉米杂交种郑单958的育种潜力分析

雍洪军^1,2, 李明顺², 张德贵², 李新海², 潘光堂¹, 张世煌², 荣廷昭¹

1. 四川农业大学玉米研究所, 雅安 625014 2. 中国农业科学院作物科学研究所, 北京 100081

收稿日期:2013-02-18 修回日期:2013-05-23 出版日期:2013-08-20 发布日期:2013-08-25
通讯作者: 李新海 E-mail:lixinhai@caas.cn
基金资助:
国家玉米产业技术体系项目(编号：CARS-02-02)资助

Analysis on breeding potential of eight synthetic populations to improve a Chinese maize hybrid Zhengdan 958

YONG Hong-Jun^1,2, LI Ming-Shun², ZHANG De-Gui², LI Xin-Hai², PAN Guang-Tang¹, ZHANG Shi-Huang², RONG Ting-Zhao¹

1. Maize Research Institute, Sichuan Agricultural University, Ya’an 625014, China 2. Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received:2013-02-18 Revised:2013-05-23 Online:2013-08-20 Published:2013-08-25

摘要/Abstract

摘要：

玉米群体含有有利等位基因, 可作为改良杂交种的优异种质。针对持续改良我国主要玉米杂交种郑单958产量性状和商品品质的需求, 文章以8个合成群体为供体, 郑单958亲本自交系为受体, 组配16个测交组合。2009和2010年分别在北京顺义和河南新乡测量产量和籽粒容重。4个遗传参数评价显示, 合成群体可以作为新的有利等位基因供体改良杂交种性状, 其中WBMC-4和陕综3号两个群体具有同时改良杂交种产量和籽粒容重的潜力, 可分别用于改良亲本自交系郑58和昌7-2, 以及拓宽我国主要玉米类群PA和四平头的种质基础。

关键词: 种质改良, 合成群体, 杂交种, 玉米

Abstract:

Maize (Zea mays L.) populations are potential sources of favorable alleles absent in parental inbred lines to improve elite hybrids. The maize hybrid Zhengdan 958 has been hampered by the lack of favorable new alleles for improving yield and commodity quality. In the present study, 16 testcrosses made by using eight synthetic populations as the donors and the two parental lines of Zhengdan 958 as the receptors were evaluated in 2009 and 2010 at Shunyi, Beijing and Xinxiang, Henan Province for grain yield and test weight. Four genetic parameters were used to determine the breeding potential of eight synthetic populations as the donors to improve the target hybrid. Several synthetic populations were identified as the potential sources of favorable alleles absent in the target hybrid for each trait evaluated. The two most promising germplasms, WBMC-4 and Shanxi Syn3, had the potential for simultaneously improving grain yield and test weight of the target hybrid, which could be used to improve the parental lines Zheng 58 and Chang 7-2, respectively, and further broaden the germplasm base of Chinese heterotic groups PA and Sipingtou.

Key words: Zea mays L, hybrid, germplasm improvement, synthetic populations

雍洪军李明顺张德贵李新海潘光堂张世煌荣廷昭. 8个合成群体改良玉米杂交种郑单958的育种潜力分析[J]. 遗传, 2013, 35(8): 1007-1013.

YONG Hong-Jun LI Ming-Shun ZHANG De-Gui LI Xin-Hai PAN Guang-Tang ZHANG Shi-Huang RONG Ting-Zhao. Analysis on breeding potential of eight synthetic populations to improve a Chinese maize hybrid Zhengdan 958[J]. HEREDITAS, 2013, 35(8): 1007-1013.

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8个合成群体改良玉米杂交种郑单958的育种潜力分析

Analysis on breeding potential of eight synthetic populations to improve a Chinese maize hybrid Zhengdan 958

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