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Three QTL Regions for Restoration of Owen CMS in Sugar Beet
Author(s) -
HjerdinPanagopoulos Annika,
Kraft Thomas,
Rading Ingrid M.,
Tuvesson Stig,
Nilsson NilsOtto
Publication year - 2002
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2002.5400
Subject(s) - biology , quantitative trait locus , restriction fragment length polymorphism , sugar beet , genetics , population , genetic linkage , cytoplasmic male sterility , amplified fragment length polymorphism , genetic marker , allele , sterility , genotype , gene , horticulture , genetic diversity , demography , sociology
Three quantitative trati loci (QTL) regions for the restoration of Owen CMS (cytoplasmic male sterility) in sugar beet ( Beta vulgaris L.ssp. vulgaris ) were identified through analysis of three populations segregating for genes restoring the fertility of cytoplasmic male sterile plants. Two large populations, A and B, were studied by means of 51 and 42 polymorphic and evenly distributed restriction fragment length polymorphism (RFLP) markers, respectively. A smaller population, C, was analyzed by use of six RFLP markers. Composite interval mapping in Population A detected a strong signal on linkage group IV that explained 79% of the phenotypic variation. More detailed analysis revealed the presence of two linked QTL on this chromosome. In Population B, a QTL that explained 72% of the phenotypic variation was detected at one end of linkage group III. Single‐marker analysis of Population C resulted in significant signals for markers on linkage group IV, explaining 57% of the phenotypic variation. In each of the two large populations, what appeared to be minor alleles were also detected in the QTL regions.