Sugar Beet Genotypes Grouping under Normal and Saline Conditions

For ranking and grouping of full-sibs and hybrids of sugar beet obtained from breeding programs, two separate experiments were carried out at the farm of the Agricultural and Natural Resources Research Station of Miandoab in 2017 under saline and normal conditions. For this purpose, 17 full-sibs and 28 hybrids differing in resistance and susceptibility to environmental stresses were investigated in for different traits. The ranking results in both conditions indicated that genotypes 18 and 22 in full-sibs test and, genotypes 6, 23, 25, 27 and 29 in the hybrid test were superior to all other genotypes. Cluster analysis showed that in both experiments (full-sibs and hybrids), there was a slight matching between the normal and saline environments and the environment affects the grouping of genotypes. Principle Components Analysis in the full-sibs test indicated that in both conditions, leaf area, root yield, sugar yield, root dry weight, relative water loss, sugar content, purity of syrup and extractable sugar content had the highest contribution in the first and second components. In contrast, in the hybrid test, leaf area, root yield and leaf water content had the highest role in the first and second components. Most of the traits studied in the experiments contained diversity and can be used for grouping sugar beet genotypes. Also, groupings will vary depending on environmental conditions.