1Institute of Agricultural Sciences and Technology, Chonbuk National University, Jeonju, 561–756, Korea
2National Institute of Crop Science, RDA, Jeonju, 560–500, Korea
Department of Crop Science and Biotechnology, Institute of Agricultural Sciences and Technology, Chonbuk National University, Jeonju, 561–756, Korea
*Corresponding author's e-mail: pcs89@jbnu.ac.kr
Online published on 11 February, 2016.
The allelic variation at Rht-B1, Rht-D1 and Rht8 loci of Korean wheat cultivars was determined to evaluate the relationship between agronomic traits and different Rht alleles. Korean wheat cultivars had high frequency of Rht-B1a (70.4%) and Rht-D1a (51.9%) alleles. Thirteen cultivars carried both Rht-B1a and Rht-D1b alleles but no cultivar carried both Rht-B1b and Rht-D1b alleles. Only two cultivars, Namhae and Ol, showed 206bp fragment and whereas remaining genotypes showed 196bp at Rht8 loci. Cultivars carrying Rht-D1a and Rht8196bp alleles exhibited higher thousand kernel weight and test weight (40.2g and 809.9g, respectively) as compared to their counterpart alleles (36.6g and 788.1g, respectively). Cultivars carrying Rht-B1a and Rht-D1a alleles showed lower number of kernels per spike than those with other alleles at Rht-B1 and Rht-D1 loci. Cultivars, Namhae and Ol, carrying Rht8206bp allele showed lower test weight regardless the allelic compositions at Rht-B1 and Rht-D1 loci. Significant differences were recorded in culm and spike length regardless of allelic variation of these semi-dwarf genes.
Wheat, semi-dwarf, allelic variation, agronomic traits
