Alignment of genetic maps and QTLs between inter- and intra-specific sorghum populations

To increase the value of associated molecular tools and also to begin to explore the degree to which interspecific and intraspecific genetic variation in Sorghum is attributable to corresponding genetic loci, we have aligned genetic maps derived from two sorghum populations that share one common par...

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Bibliographic Details
Published in:Theoretical and applied genetics 2006-05, Vol.112 (7), p.1295-1305
Main Authors: Feltus, F.A, Hart, G.E, Schertz, K.F, Casa, A.M, Kresovich, S, Abraham, S, Klein, P.E, Brown, P.J, Paterson, A.H
Format: Article
Language:English
Subjects:
agronomic traits
Biological and medical sciences
Chromosome Mapping
Chromosomes, Plant
Classical genetics, quantitative genetics, hybrids
Crosses, Genetic
DNA, Plant
drought tolerance
Fundamental and applied biological sciences. Psychology
Gene loci
Genes, Plant
Genetic Markers
Genetics of eukaryotes. Biological and molecular evolution
grain sorghum
hybridization
hybrids
interspecific hybridization
leaves
plant morphology
Population - genetics
Pteridophyta, spermatophyta
Quantitative Trait Loci
senescence
Solanum propinquum
Sorghum (Poaceae)
Sorghum - genetics
Sorghum bicolor
Species Specificity
tiler number
tiller height
tillers
Vegetals
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Summary:To increase the value of associated molecular tools and also to begin to explore the degree to which interspecific and intraspecific genetic variation in Sorghum is attributable to corresponding genetic loci, we have aligned genetic maps derived from two sorghum populations that share one common parent (Sorghum bicolor L. Moench accession BTx623) but differ in morphological and evolutionarily distant alternate parents (S. propinquum or S. bicolor accession IS3620C). A total of 106 well-distributed DNA markers provide for map alignment, revealing only six nominal differences in marker order that are readily explained by sampling variation or mapping of paralogous loci. We also report a total of 61 new QTLs detected from 17 traits in these crosses. Among eight corresponding traits (some new, some previously published) that could be directly compared between the two maps, QTLs for two (tiller height and tiller number) were found to correspond in a non-random manner (P
ISSN:0040-5752
1432-2242
DOI:10.1007/s00122-006-0232-3