Combining Ability of Quantitative Traits in Snake Gourd (Trichosanthes Cucumerina Var. Anguina)

The present study was carried out on snake gourd having seven diverse genotypes (TC 01, TC 05, 24, 33, 02, 46 and 53) used as parental lines their 21 crosses generated from 7 × half-diallel fashion at Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) during March to June 2019 following RCBD with three replications. aim of the determine general combining ability (GCA) specific (SCA) for fruit yield its related traits including quality traits. General prediction ratio (GPR) these 14 greater than 0.5 (50%), indicating predominance additive gene effects over non-additive effects. estimates GCA 19 quantitative revealed that P2 P6 were good combiners promoting earliness well most other important characters viz., number fruits/ plant, individual weight yield/ plant/ hectare; also length diameter, respectively whereas, P4 main vine nodes while, P3 superior long 100-seed P5 seeds/ P1 less fly infestation length. promising yield, components 13 P2, P3, P4, P7, P5, P6, P7 P7. Out only two namely, had both combiner parents (high high). These therefore, amenable improvement respective through pedigree selection. Remaining 11 displaying high SCA different observed be derived various types medium, low, medium low low). results indicate operation additive, dominant and/ or interactions genetic control expression relative traits.
 Bangladesh J. Agril. Res. 46(4): 491-510, December 2021