美洲地区主要玉米群体特征及其利用途径分析

doi:10.3724/SP.J.1005.2013.00703

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HEREDITAS ›› 2013, Vol. 35 ›› Issue (6): 703-713.doi: 10.3724/SP.J.1005.2013.00703

Characterization and potential utilization of maize populations in America region

YONG Hong-Jun¹, WANG Jian-Jun^1,2, ZHANG De-Gui¹, ZHANG Xiao-Cong¹, LI Ming-Shun¹, BAI Li1, ZHANG Shi-Huang¹, LI Xin-Hai¹

1. National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China 2. Maize Research Institute, Shanxi Academy of Agricultural Sciences, Xinzhou 034000, China

Received:2012-09-07 Revised:2012-10-16 Online:2013-06-20 Published:2013-06-25

Abstract

Abstract: Introgression of exotic maize (Zea mays L.) germplasm is an effective approach to broadening the genetic base of Chinese germplasm. America is the center of maize origin and germplasm diversity. By analyzing general combining ability effects and heterosis responses among maize populations from the U.S., International Maize and Wheat Improvement Center (CIMMYT), and Brazil studied by different authors, 24 elite maize populations from America region, including eight U.S. populations, eight CIMMYT populations, and eight Brazilian populations, were identified as having high potential in China. Based on adaptation improvement, we suggest to introgress BSSS(R)C10, BS10(FR)C14, BS13(S)C9, BSK(HI)C8 Syn 3, BR106, Pop44(C8), and Pop45(C3) into Chinese heterotic group A, and introgress BS11(FR)C14, BS16(S)C3 Syn 2, BS29(R)C3, BSCB1(R)C14, BR105, and Pop42(C4) into Chinese heterotic group B by forming semi-exotic populations or pools, respectively, in order to broaden the Chinese germplasm base.

Key words: Zea mays L, America, general combining ability for grain yield, heterosis response

YONG Hong-Jun WANG Jian-Jun ZHANG De-Gui ZHANG Xiao-Cong LI Ming-Shun BAI Li ZHANG Shi-Huang LI Xin-Hai. Characterization and potential utilization of maize populations in America region[J]. HEREDITAS, 2013, 35(6): 703-713.

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