QTL mapping of resistance to Sporisorium reiliana in maize
文献类型: 外文期刊
第一作者: Lubberstedt, T
作者: Lubberstedt, T;Xia, XC;Tan, G;Liu, X;Melchinger, AE
作者机构:
关键词: maize;head smut;Sporisorium reiliana;QTL;RFLP;Ustilago maydis;Puccinia sorghi
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN: 0040-5752
年卷期: 1999 年 99 卷 3-4 期
页码:
收录情况: SCI
摘要: We mapped and characterized quantitative trait loci (QTL) for resistance to Sporisorium reiliana. A population of 220 F-3 families produced from the cross of two European elite inbreds (D32, D145) was evaluated with two replications at a French location with high natural incidence of S. reiliana and at a Chinese location employing artificial inoculation. The 220 F-3 families were genotyped with 87 RFLP and seven SSR markers. Using composite interval mapping, we identified two different sets of 3 and 8 QTL for the French and the Chinese locations explaining 13% and 44% of respectively. Individual QTL explained up to 14% of <(sigma)over cap>(2)(p). The 11 QTL mapped to eight maize chromosomes and displayed mostly additive or partial dominant gene action. Significant digenic epistatic interactions were detected for one pair of these QTL. Only a few QTL for S. reiliana were in common with QTL for resistance to Ustilago maydis and Puccinia sorghi, identified at a German location for the same population. Consequently, in our materials resistance to these three fungal pathogens of maize seems to be inherited independently.
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