GENETIC DIVERSITY OF TWENTY GERMPLASM OF RADISH (Raphanus sail vus L.)

Abstract

Genetic diversity of 20 radish genotypes was studied for some morphological trait and yield. For this a field experiment was accomplished at experimental site of Sher-e-Bangla Agricultural University during November 2016 to January 2017. A high variation was observed for root color, leaf shape, presence of awn in the leaf, plant height, root length, root weight. shoot length, shoot weight, and first flowering DAS. Among these genotypes. the genetic variation was apparent for most of the character I Ike plant height, root length, root weight, shoot length, shoot weight. root dry weight, shoot dry weight and first flowering DAS that indicated the potential for crop improvement in these traits through selection. On the basis of plant height, number of leaf per plant. root length. root breadth, root weight. shoot length. shoot wcight, root dry weight, shoot dry weight, first flowering DAS, Days to maturity four distinct cluster were formed. Cluster IV (01. 02, 03, 05, 07, 08, 09, G14. 015, 016. 017, 018, 019) contain the highest number of genotypes followed by cluster III (010, 011, 012, and 013) and cluster I (04, 06). The lowest genotype presents in the cluster I only one. The highest cluster distance was between cluster I and cluster Hi which was 16.695 followed by cluster 11 and cluster lii which was 15.747. cluster I and cluster 11(15.496). cluster Hand cluster IV(13.538). cluster I and cluster IV(13.075). The lowest distant was observed between cluster Ill and cluster IV (4.311). No clustering was found on the basis of origin. The highest root weight was observed in 04 (BD-4289) which was under cluster H. The highest shoot weight was observed in 020 (13D-10435) possessed by cluster 1. Among the cluster the long distance was observed between I and cluster III (16.695) and short distance was between cluster Wand cluster IV (4.311). Taking into account the genetic diversity and other performance 04, 06, 07, 019. 020 were considered to be hopeful parents for potential hybridization effort.