Vol. 9, Issue 11 (2020)

Author(s):
JD Deshmukh, HV Kalpande and SV Kalyankar

Abstract:
Heterosis is widely utilized for the selection of superior cross combinations. Since the heterosis has become commercially feasible in developing hybrid brinjal. Appreciable heterosis was found for all the traits studied in desirable direction. For the trait fruit yield per plant the maximum positive and significant heterosis over KashiTaru (50.68%) and Phule Arjun (66.49%) observed in the cross JB-9 x JKGEH-6012. The combining ability is also one of the important genetic tools which provide a guideline for an assessment of the relative breeding potential of the parents or identifying the best combiners, which may be hybridized either to exploit heterosis or to accumulate fixable genes. The knowledge regarding the nature of gene action is essential for choosing suitable breeding methodologies for brinjal improvement. In the present investigation the lines were significant for most of the characters except for the number of primary branches. Among testers, the differences were non-significant for days to first picking and number of fruits per cluster, whereas other characters were found significant. The highest sca effect was observed in JB-9 x DMU-1 (7.45) fruit weight, JB-9 x JKGEH-6012 (2.58) number of fruits per plant, DBR-8 x B.deoria (0.45) number of primary branches per plant and JB-9 x JKGEH-6012 (2.51) for fruit yield per plant. Gene action analysis revealed the preponderance of both additive and non-additive genes for yield and its contributing characters.