Genetic linkage map and QTL analysis of agronomic and fiber quality traits in an intraspecific population.

Publication Overview
TitleGenetic linkage map and QTL analysis of agronomic and fiber quality traits in an intraspecific population.
AuthorsUlloa M; Meredith WR Jr
TypeJournal Article
Journal NameJournal of Cotton Science
Volume4
Year2000
Page(s)161 170
Publication CodeJCS-4-161

Abstract

Molecular markers may enhance breeding for quantitatively inherited traits. We developed a restriction fragment length polymorphism (RFLP) genetic linkage map of cotton (Gossypium hirsutum L.) from 119 F2.3 progeny from the cross MD5678ne X Prema, and used it for quantitative trait loci (QTL) analysis for agronomic and fiber quality traits. The linkage map comprises 81 loci mapped to 17 linkage groups with an average distance between markers of 8.7 centiMorgans (cM), covering 700.7 cM, or approximately 15\\% of the recombinational length of the cotton genome. Lint percentage and fiber strength were negatively correlated (r = -0.41), as were fiber strength and fiber perimeter (r = -0.38). In addition, fiber strength was positively correlated with 50\\% fiber span length (r = 0.36) and 2.5\\% span length (r = 0.31). Twenty-six QTLs were detected on nine linkage groups, and explained from 3.4 to 44.6\\% of the trait variation. Two QTLs were detected for lint yield and three for lint percentage, explaining from 5 to 20\\% of the variation in each trait. Three QTLs for fiber strength and two QTLs for fiber 2.5\\% span length were detected. A QTL near locus A42B1b explained 4.8\\% of the phenotypic variation in lint percentage,24.6\\% of the variation in fiber strength, 11.5\\% of the variation in 2.5\\% span length, and 11.3\\% of the variation in perimeter. As expected, the Prema parent contributed QTLs for low yield of fibers that were long, strong, and fine while QTLs from MD5678ne imparted high yield of short, coarse, and weak fibers. The QTL positions on the linkage groups suggest that genes conferring fiber quality may cluster on the same cotton chromosome(s).
Features
This publication contains information about 26 features:
Feature NameUniquenameType
lint yieldqLY.MP-F2:3_group10QTL
lint yieldqLY.MP-F2:3_group17QTL
lint percentqLP.MP-F2:3_group01.1QTL
lint percentqLP.MP-F2:3_group01.2QTL
lint percentqLP.MP-F2:3_group10QTL
seed indexqSI.MP-F2:3_group01QTL
seed indexqSI.MP-F2:3_group03QTL
fiber strengthqFS.MP-F2:3_group01.1QTL
fiber strengthqFS.MP-F2:3_group01.2QTL
fiber strengthqFS.MP-F2:3_group06QTL
fiber elongationqFEL.MP-F2:3_group03.1QTL
fiber elongationqFEL.MP-F2:3_group03.2QTL
fiber elongationqFEL.MP-F2:3_group09QTL
50 span lengthqSL50.MP-F2:3_group03QTL
2.5 span lengthqSL2.5.MP-F2:3_group01QTL
2.5 span lengthqSL2.5.MP-F2:3_group15QTL
micronaireqMIC.MP-F2:3_group01.1QTL
micronaireqMIC.MP-F2:3_group01.2QTL
micronaireqMIC.MP-F2:3_group01.3QTL
micronaireqMIC.MP-F2:3_group01.4QTL
fiber mature contentqFM.MP-F2:3_group03QTL
fiber mature contentqFM.MP-F2:3_group07QTL
fiber perimeterqFP.MP-F2:3_group01QTL
fiber perimeterqFP.MP-F2:3_group05QTL
fiber perimeterqFP.MP-F2:3_group07QTL

Pages

Projects
This publication contains information about 1 projects:
Project NameDescription
MP-F2:3-2000
Featuremaps
This publication contains information about 1 maps:
Map Name
MD-5678ne x Prema, F2:3 (2000)
Properties
Additional details for this publication include:
Property NameValue
Journal CodeJCS
pISSN1523-6919
URLhttp://www.cotton.org/journal/
eISSN1524-3303
Journal AliasThe journal of cotton science
PublisherThe Cotton Foundation
Published LocationUnited States
Publication CodeJCS-4-161
LanguageEnglish
Keywordsgossypium hirsutum; restriction fragment length polymorphism; gene mapping