Hamid Hatami Maleki

Sugar beet (Beta Vulgaris L.) is considered one of the most important sugar producing plants in the world, which is often cultivated in temperate, Mediterranean and dry regions of the world. Knowledge of the genetic diversity in the genotypes of this plant is the basis for choosing suitable parents in plant breeding programs. This research aimed to evaluate the genetic diversity of 20 sugar beet monogerm hybrids at the Miandoab Agricultural Research Station in the 95-96 crop year. Root weight, coverage percentage, plant height, leaf width, petiole length, crown diameter, tuber size were measured. Based on the results of variance analysis of quantitative traits, there was considerable genetic diversity in the examined sugar beet germplasm. In terms of quantitative traits, genotype F-20707 has the lowest amount of vegetative growth in the field. . Grouping of the studied germplasm using quantitative characteristics placed them in four separate groups. According to the cluster analysis, there were different heterotic groups in the examined germplasm, and this provides the possibility of benefiting from the phenomenon of heterosis in the genetic improvement of quantitative traits of sugar beet.