STUDY OF HYBRID VIGOR, COMBINING ABILITY AND SOME GENETIC PARAMETERS IN OKRA.

This study was aimed ot investigate, hybrid vigor and combining ability in some traits of okra. to during 2021 and 2022 seasons, at private field located in the Mahmoudiya district of Baghdad, using the 7-line × 3 tester method. In the second season, the genotypes (parents and hybrids) were compared in varietal trait using Randomized Complete Block Design ( RCBD) with three replications. The results revealed significant differences among the parents and crosses for most of studied traits. Hybrids O4×O2 and O10×O3 emerged as standouts, achieving the highest yield in the plastic house, with yields 927.80 kg and 892.60 kg, respectively. Hybrids O5×O1, O6×O2, and O8×O3 produced the highest numbers of pods. Hybrid O4×O2 exhibited the most significant positive values for hybrid vigor, reaching 54%, in plastic house yield. Certain parents exhibited a positive and significant general combining ability in the desired direction for the measured traits. Furthermore, hybrids O4×O2 and O10×O3 demonstrated a positive and significant specific combining ability in plastic house yield.