QTLs for node of first fruiting branch in a cross of an upland cotton, Gossypium hirsutum L., cultivar with primitive accession Texas 701.

Publication Overview
TitleQTLs for node of first fruiting branch in a cross of an upland cotton, Gossypium hirsutum L., cultivar with primitive accession Texas 701.
AuthorsGuo YF; McCarty JC Jr; Jenkins JN; Saha S; McCarty JC
TypeJournal Article
Journal NameEuphytica
Volume163
Year2008
Page(s)113 122
CitationGuo Y, McCarty JC, Jenkins JN, Saha S. QTLs for node of first fruiting branch in a cross of an upland cotton, Gossypium hirsutum L., cultivar with primitive accession Texas 701. Euphytica. 2008; 163(1):113-122
Publication CodeEUP-163-113

Abstract

Primitive cottons (Gossypium spp.) represent resources for genetic improvement. Most primitive accessions are photoperiod sensitive\\; they do not flower under the long days of the U.S. cotton belt. Molecular markers were used to locate quantitative trait loci (QTLs) for node of first fruiting branch (NFB), a trait closely related to flowering time in cotton. An F-2 population consisted of 251 plants from the cross of a day neutral cultivar Deltapine 61, and a photoperiod sensitive accession Texas 701, were used in this study. Segregation in the population revealed the complex characteristics of NFB. Interval mapping and multiple QTL mapping were used to determine QTLs contributing to NFB. Three significant QTLs were mapped to chromosome 16, 21, and 25\\; two suggestive QTLs were mapped to chromosome 15 and 16. Four markers associated with these QTLs accounted for 33\\% of the variation in NFB by single and multiple-marker regression analyses. Two pairs of epistasis interaction between markers were detected. Our results suggested that at least three chromosomes contain factors associated with flowering time for this population with epistasis interactions between chromosomes. This research represent the first flowering time QTL mapping in cotton. Makers associated with flowering time may have the potential to facilitate day neutral conversion of accessions."; Primitive cottons (Gossypium spp.) represent resources for genetic improvement. Most primitive accessions are photoperiod sensitive\\; they do not flower under the long days of the U.S. cotton belt. Molecular markers were used to locate quantitative trait loci (QTLs) for node of first fruiting branch (NFB), a trait closely related to flowering time in cotton. An F2 population consisted of 251 plants from the cross of a day neutral cultivar Deltapine 61, and a photoperiod sensitive accession Texas 701, were used in this study. Segregation in the population revealed the complex characteristics of NFB. Interval mapping and multiple QTL mapping were used to determine QTLs contributing to NFB. Three significant QTLs were mapped to chromosome 16, 21, and 25\\; two suggestive QTLs were mapped to chromosome 15 and 16. Four markers associated with these QTLs accounted for 33\\% of the variation in NFB by single and multiple-marker regression analyses. Two pairs of epistasis interaction between markers were detected. Our results suggested that at least three chromosomes contain factors associated with flowering time for this population with epistasis interactions between chromosomes. This research represent the first flowering time QTL mapping in cotton. Makers associated with flowering time may have the potential to facilitate day neutral conversion of accessions.
Features
This publication contains information about 3 features:
Feature NameUniquenameType
leaf shapeOkra leaf_L2-sheritable_phenotypic_marker
petal colorYellow petals (Y1)heritable_phenotypic_marker
petal spotPetal spot (R2)heritable_phenotypic_marker
Featuremaps
This publication contains information about 1 maps:
Map Name
Deltapine-61 x Texas-701, F2 (2007)
Properties
Additional details for this publication include:
Property NameValue
Publication TypeJournal Article
Publication Date2008
Language Abbreng
Publication Model[electronic resource].
URLhttp://dx.doi.org/10.1007/s10681-007-9613-1
pISSN0014-2336
Publication CodeEUP-163-113
Published LocationGermany
eISSN1573-5060
Journal CodeEUP
LanguageEnglish
Keywordscotton, plant breeding, hybridization, cultivars, quantitative trait loci, shoots, branching, plant development, hybrids, gene segregation, chromosome mapping, epistasis, flowering, primitive accesions, flowering time, cotton; hybrids; plant development; branching; gene segregation; flowering; epistasis; chromosome mapping; plant breeding; Gossypium hirsutum; hybridization; shoots; quantitative trait loci; cultivars; Cotton; Flowering time; Primitive accession; QTL