Allelic variation of vernalization and photoperiod response genes in a diverse set of North American high latitude winter wheat genotypes

PloS One
Alexander WhittalAlireza Navabi

Abstract

The major physiological determinants of wheat (Triticum aestivum L.) phenology in a given area are a response to vernalization temperature and day length, which are at least in part, regulated by the allelic variation at the vernalization (VRN) and photoperiod (PPD) loci, respectively. Characterization of the existing genetic variation for plant phenology in winter wheat can assist breeding programs improve adaptation to local environments and to optimize wheat phenology for the changing climate. The objectives of this research were to characterize the allelic variation at the major VRN and PPD loci in a diverse panel of high latitude winter wheat genotypes (n = 203) and to associate the allelic variation with phenologic, agronomic and adaptation traits. The panel was genotyped using allele-specific markers at vernalization (VRN-A1, VRN-B1, VRN-D1 and VRN-B3) and photoperiod (PPD-A1, PPD-B1, and PPD-D1) loci and phenotyped for agronomically-important traits. Though photoperiod sensitivity was more prevalent, most of the variation in the phenology of the winter wheat panel was explained by allelic variation at PPD-D1, PPD-A1, and the interaction between these loci. While a typical high latitude winter wheat genotype is one that ...Continue Reading

References

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Citations

Jun 10, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yi ChenAlireza Navabi

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Methods Mentioned

BETA
PCR
genotyping

Software Mentioned

SAS
Graphical Genotype ( GGT
MEGA
Primer Express
LSMEANS
Sigma
plot

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