Generation-means analysis and quantitative trait locus mapping of anthracnose stalk rot genes in maize
✍ Scribed by M. Jung; T. Weldekidan; D. Schaff; A. Paterson; S. Tingey; J. Hawk
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 667 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0040-5752
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✦ Synopsis
A generation-means analysis was performed on two maize populations, each segregating for genes conferring resistance to anthracnose stalk rot (ASR). The populations were derived from a cross of DE811ASR x DE811 and of DE811ASR x LH132. The resistant parent, DE811ASR, was obtained through introgression with MP305 as the donor and DE811 as the recurrent parent. The analysis revealed significant additive effects in both populations and a significant additive x dominant effect in the DES11ASR x DES11 population. Quantitative trait locus (QTL) mapping, using restriction fragment length polymorphism (RFLP)-based molecular markers, indicated a significant QTL on linkage group 4 in both populations. The QTL analysis confirmed additive inheritance in both populations. This work demonstrates a close correspondence between generation-means analysis and discrete observations using molecular markers. Linkage of a genetic marker to genes conferring resistance to ASR will be useful for the introgression of resistance into elite germplasm.