Determination of Combinatorial Ability and Heterosis in Capsicum chinense Jacq., using Line × Tester Analysis Method

Abstract

Objective: Know the combinatory ability and heterosis in yield parameters and fruit quality, in nine genotypes of Habanero Chilli (Capsicum chinense Jacq.).

Design/methodology/approach: In order to know the combinatory ability and heterosis in yield parameters and fruit quality, were crossed nine genotypes of Capsicum c hinense Jacq. (Habanero Chilli) in a Line × Tester (7 × 2) mating design. The parental lines and combination of crosses were evaluated in a randomized complete block design with three replications at the Yucatan Scientific Research Center during the 2018 and 2019.

Results: The results showed the lines 3 and 7, presented a high and positive general combinatory ability (GCA) for most of the parameters studied, the tester 1 presented a high GCA for yield per plant (YP) with 0.45. The cross L1 × T2 presented the highest value of specific combining ability (SCA) for YP with 0.50. The highest heterosis (171.01%) was observed in the L1 × T1 cross for capsaicin content (CC). Tester 1 was identified as a promising genotype for breeding Capsicum chinense Jacq.

Findings/conclusions: Line 7 and Tester 1 was identified as promising genotypes for crop breeding Capsicum chinense Jacq.