Vol. 10, Issue 8 (2021)

Author(s):
Hadagali SM, Sarvamangala S Cholin, BM Chandan, S Evoor, BB Patil and DS Ambika

Abstract:
The present investigation was undertaken at University of Horticultural Sciences, Bagalkot during the 2020-21. The objective of the study was to understand the genetic variability, heritability, transgressive segregation index and inbreeding depression of root productivity and other phenotypic traits in the F2 segregating population obtained from a cross between UHSBC-38 x UHSBC-40 and comprising of 75 individuals. The root length and root width showed higher broad sense heritability, and higher genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) which supports positive selection response and ease in crop improvement of these traits. The population showed high inbreeding depression for root weight and shoulder weight based on the F1 and F2 generation comparison. We obtained fewer transgressive segregants and those can be further used for crop improvement. It was observed that, carrot being a highly cross pollinated crop, greater genetic variation can be created in the segregating population despite having high inbreeding depression.