Indian Society of Genetics & Plant Breeding

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The relationship between allelic variations of Vrn-1 and Ppd-1 and agronomic traits in Korean wheat cultivars

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The allelic variations at the Vrn-1 and Ppd-1 loci of Korean
wheat cultivars were determined to evaluate their effects
on agronomic traits and response to vernalization
treatment. Korean wheat cultivars displayed high frequency
of Vrn-D1a and Ppd-B1b alleles, but all of the tested cultivars
carried vrn-A1, vrn-B1, Ppd-A1b and Ppd-D1a alleles at the
corresponding loci. Regardless of vernalization treatments,
Korean wheat cultivars carrying the vrn-D1 allele showed
longer days to flag leaf unfolding than those with the Vrn-
D1a allele. Unvernalized cultivars carrying the vrn-D1 allele
also exhibited larger final leaf number than those with the
Vrn-D1a allele. However, there were no significant
differences in the response of the Korean wheat cultivars
to vernalization treatment based on allelic variation at the
Ppd-1 loci. With respect to agronomic traits, the Vrn-D1a
allele was related to increased grain yield and decreased
thousand kernel weight compared to the vrn-D1 allele.
Cultivars carrying both Vrn-D1a and Ppd-B1b alleles
produced higher grain yield (5.5 tons/ha) than those with
the vrn-D1 and Ppd-B1b alleles (5.0 tons/ha).

Keywords: Wheat, vernalization, photoperiod, allelic variation, agronomic traits

Info

Year: 2015
Volume: 75
Issue: 3
Article DOI: 10.5958/0975-6906.2015.00046.2
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

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Chon-Sik Kang, Young Mi Yoon info_circle
Chul Soo Park info_circle

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