Abstract
Big and curly fruit lines of Capsicum annuum L. were crossed according to Griffing’s Method (Diallel) Method 1. The objectives of this paper were to show the assessment of the general combining ability (GCA) and specific combining ability (SCA) of C. annuum L. lines through diallelic crosses providing information about the genetic effect, heritability and heterosis on expression of yield and yield component traits. Thirty cross combination and six parents were evaluated in a randomized complete block design with three replications. The experiment was conducted at Leuwikopo experiment field, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University on October 2012 to April 2013. The GCA and SCA means square were significant for all traits. The higher values of mean squares associated to GCA indicates a strong contribution of additive genetic effects to the expression of some traits. C5 scored highly for GCA in some traits and can be used to develop an open pollinated variety. Estimates of heritability showed that some of the traits were highly heritable, and weight per plant trait should readily be improved by selection. The SCA of cross C2 × C5, C5 × C120, C19 × C120, C120 × C159 were found to be high, with progeny showing high positive heterosis for some traits, thereby indicating that those crosses have the potential to function as a superior cultivar within commercial breeding programmes.
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