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Marker analysis for quantitative traits in sugar beet
Author(s) -
Weber W. E.,
Borchardt D. C.,
Koch G
Publication year - 2000
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1046/j.1439-0523.2000.00482.x
Subject(s) - biology , sugar beet , quantitative trait locus , genetic marker , sugar , botany , microbiology and biotechnology , genetics , agronomy , gene , food science
Many economically important traits are inherited quantitatively and are analysed by breeders in replicated field trials. If dense maps are available, chromosomal regions containing quantitative trait loci (QTL) can be identified and this opens up the possibility of preselecting for quantitative traits in the laboratory. In this study, QTL analysis for yield and yield components in sugar beet is used in two different populations tested in several environments in both populations, QTL were detected for all traits investigated, and their predictive value in breeding schemes was analysed by correlating predicted with observed values. Tolerance to Rhizomania , caused by a gene on chromosome 3, was the main source of genotype‐environment interaction in one population, allowing selection on a QTL basis within macro‐environments with or without Rhizomania infestation, respectively. No clear results were found for the second population tested in environments with and with‐out Cercospora infestation. Consequences for breeding strategies are discussed.