A comparative meta-analysis of QTL between intraspecific Gossypium hirsutum and interspecific G. hirsutum x G. barbadense populations

被引：173
作者：
Said, Joseph I. [1 ]
Song, Mingzhou [2 ]
Wang, Hantao [3 ,4 ]
Lin, Zhongxu [3 ,4 ]
Zhang, Xianlong [3 ,4 ]
Fang, David D. [5 ]
Zhang, Jinfa [1 ]
机构：
[1] New Mexico State Univ, Dept Plant & Environm Sci, Las Cruces, NM 88003 USA
[2] New Mexico State Univ, Dept Comp Sci, Las Cruces, NM 88003 USA
[3] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China
[4] Huazhong Agr Univ, Natl Ctr Plant Gene Res Wuhan, Wuhan 430070, Peoples R China
[5] USDA ARS SRRC, Cotton Fiber Biosci Res Unit, New Orleans, LA 70124 USA
来源：
MOLECULAR GENETICS AND GENOMICS | 2015年 / 290卷 / 03期
关键词：
Cotton; Gossypium hirsutum; Gossypium barbadense; Meta analysis; Quantitative trait loci; QUANTITATIVE TRAIT LOCI; VERTICILLIUM WILT RESISTANCE; BACKCROSS-SELF APPROACH; 1ST FRUITING BRANCH; FIBER QUALITY; UPLAND COTTON; MOLECULAR DISSECTION; POLYPLOID FORMATION; YIELD; GENES;
D O I：
10.1007/s00438-014-0963-9
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Based on 1075 and 1059 QTL from intraspecific Upland and interspecific Upland x Pima populations, respectively, the identification of QTL clusters and hotspots provides a useful resource for cotton breeding. Mapping of quantitative trait loci (QTL) is a pre-requisite of marker-assisted selection for crop yield and quality. Recent meta-analysis of QTL in tetraploid cotton (Gossypium spp.) has identified regions of the genome with high concentrations of QTL for various traits called clusters and specific trait QTL called hotspots or meta-QTL (mQTL). However, the meta-analysis included all population types of Gossypium mixing both intraspecific G. hirsutum and interspecific G. hirsutum x G. barbadense populations. This study used 1,075 QTL from 58 publications on intraspecific G. hirsutum and 1,059 QTL from 30 publications on G. hirsutum x G. barbadense populations to perform a comprehensive comparative analysis of QTL clusters and hotspots between the two populations for yield, fiber and seed quality, and biotic and abiotic stress tolerance. QTL hotspots were further analyzed for mQTL within the hotspots using Biomercator V3 software. The ratio of QTL between the two population types was proportional yet differences in hotspot type and placement were observed between the two population types. However, on some chromosomes QTL clusters and hotspots were similar between the two populations. This shows that there are some universal QTL regions in the cultivated tetraploid cotton which remain consistent and some regions which differ between population types. This study for the first time elucidates the similarities and differences in QTL clusters and hotspots between intraspecific and interspecific populations, providing an important resource to cotton breeding programs in marker-assisted selection .
引用
收藏
页码：1003 / 1025
页数：23
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