Статья

A Genetic Map Between<i>Gossypium hirsutum</i>and the Brazilian Endemic<i>G. mustelinum</i>and Its Application to QTL Mapping

Baohua WangDepartment of Crop and Soil Sciences, University of Georgia, Tifton, Georgia 31793Limei LiuDepartment of Crop and Soil Sciences, University of Georgia, Tifton, Georgia 31793Dong ZhangPlant Genome Mapping Laboratory, University of Georgia, Athens, Georgia 30602Zhimin ZhuangDepartment of Crop and Soil Sciences, University of Georgia, Tifton, Georgia 31793Hui GuoPlant Genome Mapping Laboratory, University of Georgia, Athens, Georgia 30602Xin QiaoPlant Genome Mapping Laboratory, University of Georgia, Athens, Georgia 30602Lijuan WeiPlant Genome Mapping Laboratory, University of Georgia, Athens, Georgia 30602Junkang RongPlant Genome Mapping Laboratory, University of Georgia, Athens, Georgia 30602O. Lloyd MayDepartment of Crop and Soil Sciences, University of Georgia, Tifton, Georgia 31793Andrew H. PatersonPlant Genome Mapping Laboratory, University of Georgia, Athens, Georgia 30602Peng W. CheeDepartment of Crop and Soil Sciences, University of Georgia, Tifton, Georgia 31793

2016en

ABI

Аннотация

Among the seven tetraploid cotton species, little is known about transmission genetics and genome organization in Gossypium mustelinum, the species most distant from the source of most cultivated cotton, G. hirsutum In this research, an F2 population was developed from an interspecific cross between G. hirsutum and G. mustelinum (HM). A genetic linkage map was constructed mainly using simple sequence repeat (SSRs) and restriction fragment length polymorphism (RFLP) DNA markers. The arrangements of most genetic loci along the HM chromosomes were identical to those of other tetraploid cotton species. However, both major and minor structural rearrangements were also observed, for which we propose a parsimony-based model for structural divergence of tetraploid cottons from common ancestors. Sequences of mapped markers were used for alignment with the 26 scaffolds of the G. hirsutum draft genome, and showed high consistency. Quantitative trait locus (QTL) mapping of fiber elongation in advanced backcross populations derived from the same parents demonstrated the value of the HM map. The HM map will serve as a valuable resource for QTL mapping and introgression of G. mustelinum alleles into G. hirsutum, and help clarify evolutionary relationships between the tetraploid cotton genomes.

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Идентификаторы

DOI: 10.1534/g3.116.029116

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar