Quantitative analysis and QTL mapping for agronomic and fiber traits in an RI population of upland cotton.

Publication Overview
TitleQuantitative analysis and QTL mapping for agronomic and fiber traits in an RI population of upland cotton.
AuthorsWu JX; Gutierrez OA; Jenkins JN; McCarty JC Jr; Zhu J
TypeJournal Article
Journal NameEuphytica
Volume165
Year2009
Page(s)231 245
CitationWu J, Gutierrez OA, Jenkins JN, McCarty JC, Zhu J. Quantitative analysis and QTL mapping for agronomic and fiber traits in an RI population of upland cotton. Euphytica. 2009; 165(2):231-245.
Publication CodeEUP-165-231

Abstract

Genetic mapping is an essential tool for cotton (Gossypium hirsutum L.) molecular breeding and application of DNA markers for cotton improvement. In this present study, we evaluated an RI population including 188 RI lines developed from 94 F-2-derived families and their two parental lines, 'HS 46' and 'MARCABUCAG8US-1-88', at Mississippi State, MS, for two years. Fourteen agronomic and fiber traits were measured. One hundred forty one (141) polymorphic SSR markers were screened for this population and 125 markers were used to construct a linkage map. Twenty six linkage groups were constructed, covering 125 SSR loci and 965 cM of overall map distance. Twenty four linkage groups (115 SSR loci) were assigned to specific chromosomes. Quantitative genetic analysis showed that the genotypic effects accounted for more than 20\\% of the phenotypic variation for all traits except fiber perimeter (18\\%). Fifty six QTLs (LOD > 3.0) associated with 14 agronomic and fiber traits were located on 17 chromosomes. One QTL associated with fiber elongation was located on linkage group LGU01. Nine chromosomes in sub-A genome harbored 27 QTLs with 10 associated with agronomic traits and 17 with fiber traits. Eight chromosomes in D sub-genome harbored 29 QTLs with 13 associated with agronomic traits and 16 with fiber traits. Chromosomes 3, 5, 12, 13, 14, 16, 20, and 26 harbor important QTLs for both yield and fiber quality compared to other chromosomes. Since this RI population was developed from an intraspecific cross within upland cotton, these QTLs should be useful for marker assisted selection for improving breeding efficiency in cotton line development.
Featuremaps
This publication contains information about 1 maps:
Map Name
HS-46 x MARCABUCAG8US-1-88, RIL (2009)
Properties
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URLhttp://www.springerlink.com/content/102881/
LanguageEnglish
eISSN1573-5060
pISSN0014-2336
Journal CodeEUP
PublisherSpringer
Published LocationGermany
Publication CodeEUP-165-231
Publication TypeJournal Article
Publication Date2009
Language Abbreng
Publication Model[electronic resource].
Keywordslinkage mapping; genetic markers; microsatellite repeats; fiber quality; lint cotton; phenotypic variation; quantitative traits; loci; linkage groups; inbred lines; quantitative genetics; Gossypium hirsutum; cotton; agronomic traits; crop yield; quantitative trait loci; chromosome mapping, cotton, inbred lines, quantitative genetics, quantitative trait loci, chromosome mapping, agronomic traits, crop yield, fiber quality, lint cotton, genetic markers, microsatellite repeats, loci, linkage groups, phenotypic variation, quantitative traits, recombinant inbred lines, fiber traits
Cross References
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DatabaseAccession
AGL: USDA National Agricultural LibraryAGL:4129140