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consensus linkage map identifies genomic regions controlling fruit maturity and beta-carotene-associated flesh color in melon (Cucumis melo L.)
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consensus linkage map identifies genomic regions controlling fruit maturity and beta-carotene-associated flesh color in melon (Cucumis melo L.)
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consensus linkage map identifies genomic regions controlling fruit maturity and beta-carotene-associated flesh color in melon (Cucumis melo L.)
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Journal Article
consensus linkage map identifies genomic regions controlling fruit maturity and beta-carotene-associated flesh color in melon (Cucumis melo L.)
2009
Overview
The nutritional value and yield potential of US Western Shipping melon (USWS; Cucumis melo L.) could be improved through the introgression of genes for early fruit maturity (FM) and the enhancement of the quantity of β-carotene (QβC) in fruit mesocarp (i.e., flesh color). Therefore, a set of 116 F₃ families derived from the monoecious, early FM Chinese line 'Q 3-2-2' (no β-carotene, white mesocarp) and the andromonoecious, late FM USWS line 'Top Mark' (possessing β-carotene, orange mesocarp) were examined during 2 years in Wisconsin, USA to identify quantitative trait loci (QTL) associated with FM and QβC. A 171-point F₂₋₃ based map was constructed and used for QTL analysis. Three QTL associated with QβC were detected, which explained a significant portion of the observed phenotypic variation (flesh color; R ² = 4.0-50.0%). The map position of one QTL (β-carM.E.9.1) was uniformly aligned with one carotenoid-related gene (Orange gene), suggesting its likely role in QβC in this melon population and putative relationship with the melon white flesh (wf) gene. Two major (FM.6.1 and FM.11.1; R ² >= 20%) and one minor QTL (FM.2.1; R ² = 8%) were found to be associated with FM. This map was then merged with a previous recombinant inbred line (RIL)-based map used to identify seven QTL associated with QβC in melon fruit. This consensus map [300 molecular markers (187 co-dominant melon and 14 interspecific; 10 LG)] provides a framework for the further dissection and cloning of published QTL, which will consequently lead to more effective trait introgression in melon.
Publisher
Berlin/Heidelberg : Springer-Verlag,Springer-Verlag,Springer,Springer Nature B.V
Subject
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ Classical genetics, quantitative genetics, hybrids
/ color
/ Cucumis melo - growth & development
/ Fruit
/ Fruit - growth & development
/ Fruits
/ Fundamental and applied biological sciences. Psychology
/ Genes
/ genetics
/ Genetics of eukaryotes. Biological and molecular evolution
/ Genomics
/ mesocarp
/ Methods, theories and miscellaneous
/ Molecular and cellular biology
/ Plant Breeding/Biotechnology
/ Quantitative Trait Loci - genetics
/ Synteny
/ Vegetals
