Combining ability test of gherkin (cucumis sativus l.)

Abstract

Combining ability test of eight F5 gherkin lines from 5 generations in selected pedigree method, 28 direct and 28 reciprocal crosses was performed. The objective of this study was to selected high general combining ability line and high specific combining ability hybrid for commercial variety. The experiment was designed in RCB with 2 blocks. The trial was planted during July to September, 2012 at Lampang Agricultural Research and Training Centre, Lampang province. Data were analyzed using Griffing method 1 with fixed treatment effect. The results were significant between varietal in all traits except yield and fruit per plant. General combining ability (GCA) was significant in all traits. Specific combining ability (SCA) was significant in all traits except yield and fruit per plant. Significance was also found in reciprocal effect in all traits except the width of fruit. For the yield of lines P1, P3, P2, P5, and P8 expressed high GCA and six hybrids were P5 / P3, P5 / P2, P1 / P5, P6 / P2, P3 / P2, and P6 / P8 had high SCA.