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Polyploid formation created unique avenues for response to selection in Gossypium (cotton)

Jiang, C.X. (Texas AandM University, College Station, TX.) ; Wright, R.J ; El-Zik, K.M ; Paterson, A.H

Proceedings of the National Academy of Sciences - PNAS, 1998-04, Vol.95 (8), p.4419-4424 [Periódico revisado por pares]

United States: National Academy of Sciences of the United States of America

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Título:
Polyploid formation created unique avenues for response to selection in Gossypium (cotton)
Autor: Jiang, C.X. (Texas AandM University, College Station, TX.) ; Wright, R.J ; El-Zik, K.M ; Paterson, A.H
Assuntos: Alleles ; ANALYTICAL METHODS ; Biological Sciences ; Botany ; CALIDAD ; CARTE GENETIQUE ; CHROMOSOME MAPS ; Cotton ; CROP YIELD ; CULTIVARS ; Diploidy ; Evolution ; FIBER QUALITY ; Flowers & plants ; GENE LOCATION ; Genetic loci ; GENETIC MAPPING ; GENETIC MAPS ; GENETIC MARKERS ; GENOME ANALYSIS ; Genomes ; GOSSYPIUM BARBADENSE ; GOSSYPIUM HIRSUTUM ; HIBRIDACION INTERESPECIFICA ; HYBRIDATION INTERSPECIFIQUE ; INTERSPECIFIC HYBRIDIZATION ; LINKAGE GROUPS ; LOCALISATION DE GENE ; LOCALIZACION DE GENES ; LOCI ; LOCUS ; MAPAS GENETICOS ; MARCADORES GENETICOS ; MARQUEUR GENETIQUE ; Phenotypic traits ; Polyploidy ; QUALITE ; QUALITY ; Quantitative trait loci ; QUANTITATIVE TRAITS ; RENDEMENT DES CULTURES ; RENDIMIENTO DE CULTIVOS ; RFLP ; TECHNIQUE ANALYTIQUE ; TECNICAS ANALITICAS ; Tetraploidy ; VARIEDADES ; VARIETE ; VARIETIES
É parte de: Proceedings of the National Academy of Sciences - PNAS, 1998-04, Vol.95 (8), p.4419-4424
Notas: 1997092007
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Communicated by Jack Harlan, University of Illinois at Urbana-Champaign, Urbana, IL
Descrição: A detailed restriction fragment length polymorphism map was used to determine the chromosomal locations and subgenomic distributions of quantitative trait loci (QTLs) segregating in a cross between cultivars of allotetraploid (AADD) Gossypium hirsutum ("Upland" cotton) and Gossypium barbadense ("Sea Island," "Pima," or "Egyptian" cotton) that differ markedly in the quality and quantity of seed epidermal fibers. Most QTLs influencing fiber quality and yield are located on the "D" subgenome, derived from an ancestor that does not produce spinnable fibers. D subgenome QTLs may partly account for the fact that domestication and breeding of tetraploid cottons has resulted in fiber yield and quality levels superior to those achieved by parallel improvement of "A" genome diploid cottons. The merger of two genomes with different evolutionary histories in a common nucleus appears to offer unique avenues for phenotypic response to selection. This may partly compensate for reduction in quantitative variation associated with polyploid formation and be one basis for the prominence of polyploids among extant angiosperms. These findings impel molecular dissection of the roles of divergent subgenomes in quantitative inheritance in many other polyploids and further exploration of both "synthetic" polyploids and exotic diploid genotypes for agriculturally useful variation
Editor: United States: National Academy of Sciences of the United States of America
Idioma: Inglês

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Polyploid formation created unique avenues for response to selection in Gossypium (cotton)

Jiang, C.X. (Texas AandM University, College Station, TX.) ; Wright, R.J ; El-Zik, K.M ; Paterson, A.H

United States: National Academy of Sciences of the United States of America

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