Abstract
Introduction:An experiment was conducted to study combining ability and heterosis for yield and related traits in chili during November 2015 to September 2017.Materials and Methods:The experimental material consisted of six parents and their fifteen F1’s developed by half diallel mating design. Analysis of variance for combining ability exhibited significant General and Specific Combining Ability (GCA and SCA) effects for all the characters studied.Results:The SCA variance was higher than GCA variance for all the traits except ten fresh fruit weight, fruit length and fruit width indicating the predominance of non-additive type of gene action. The parents P1and P6were identified as the best general combiners and the hybrids P1×P6, P1×P4and P2×P5were identified as the best specific combinations for fresh fruit yield per plant and related traits. The hybrids P1×P6, P1×P4and P3×P6showed significant average heterosis and heterobeltiosis for fresh fruit yield per plant and its related traits. (H1/D)0.5ratio indicated partial dominance effect of genes for all the traits.Conclusion:Therefore, it may be possible to take advantages of better heterotic effects to be fixed in the later generations to facilitate further selection and best specific combinations for development of the hybrid variety of chili which can help to increase the total production in Bangladesh.
Highlights
An experiment was conducted to study combining ability and heterosis for yield and related traits in chili during November 2015 to September 2017
High Specific Combining Ability (SCA) effects may arise in crosses involving high general combiners and in those involving low combiners. In this experiment the results revealed that the hybrid P1×P6 could be selected for increasing fresh fruit yield per plant followed by the hybrid P1×P4 and P2×P5
It was revealed that sufficient genetic diversity was present among the parents and hybrids in the present investigation which helps to select the best parents and promising hybrid combinations for fresh fruit yield per plant and yield contributing characters
Summary
An experiment was conducted to study combining ability and heterosis for yield and related traits in chili during November 2015 to September 2017. Chili (Capsicum annuum L.) is an important commercial vegetable and condiment species that is grown all over the world. It is a dicotyledonous flowering plant and pertaining to the genus Capsicum of Solanaceae family, Solanoideae subfamily and Capsiceae tribe with different names such as hot pepper, chili pepper, bell pepper, pod pepper, red pepper, cayenne pepper, paprika, pimento and capsicum in the different parts of the world which have superfluous nutritional and medicinal value [1, 2]. Chili is a diploid (2n = 24), selfpollinated and chasmogamous crop species whose flowers open only after pollination [5]. Though it is a self-pollinated crop, 2 to 96% out crossing was noticed under open pollination [6]
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