Genetic Parameters and the Impact of Off-Types for Theobroma cacao L. in a Breeding Program in Brazil.

ABSTRACT: Breeding programs of cacao (Theobroma cacao L.) trees share the many challenges of breeding long-living perennial crops, and genetic progress is further constrained by both the limited understanding of the inheritance of complex traits and the prevalence of technical issues, such as mislabeled individuals (off-types). To better understand the genetic architecture of cacao, in this study, 13 years of phenotypic data collected from four progeny trials in Bahia, Brazil were analyzed jointly in a multisite analysis. Three separate analyses (multisite, single site with and without off-types) were performed to estimate genetic parameters from statistical models fitted on nine important agronomic traits (yield, seed index, pod index, % healthy pods, % pods infected with witches broom, % of

SUBMITTER: DuVal A 

PROVIDER: S-EPMC5717384 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature