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GrainGenes Reference Report: CRS-37-1306

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Reference	CRS-37-1306
Title	QTLs and epistasis associated with vernalization responses in oat.
Journal	Crop Science
Year	1997
Volume	37
Pages	1306-1316
Author	Holland JB Moser HS O'Donoughue LS Lee M
Abstract	Oat (Avena sativa L.) genotypes differ in their patterns of growth and development in response to vernalization (cold temperatures applied to germinating seeds). Genomic regions controlling vernalization response in heading date, plant height, and tiller number were mapped in a recombinant inbred (RI) population derived from the cross of oat cultivars 'Kanota' (vernalization-responsive) and 'Ogle' (vernalization-insensitive).Seventy-one F6-derived RI lines were subjected to vernalization and no-vernalization treatments, and then grown in growth chambers. A genetic linkage map of 561 (primarily RFLP) loci was used to identify quantitativet rait loci (QTLs) affecting the traits in vernalized and non-vernalized plants. Nine to 16 linkage groups and unlinked loci were associated with each trait assessed herein. Individual loci explained up to 37% of the phenotypic variation. Three to five significant loci were included in multiple locus linear models which explained up to 66% of phenotypic variation for each trait. One to 14 interactions between loci were found for each trait. The interactions explained up to 30% of the phenotypic variation not accounted for by the main effects of loci involved in the interactions. Inclusion of epistatic interactions tended to improve the fit of multiple locus models. As much as 83% of phenotypic variation was explained by multiple locus models including epistasis. Numerous epistatic interactions involving at least one locus with no significant main effect were detected.
External Databases	https://doi.org/10.2135/cropsci1997.0011183X003700040047x https://dl.sciencesocieties.org/publications/cs/abstracts/37/4/CS0370041306
Map Data	Oat-1997-KxO-QTL
QTL	QHDNV.1997-KxO_UL.1 [ Show all 80 ]

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