Bayesian Multi-Trait Analysis Reveals a Useful Tool to Increase Oil Concentration and to Decrease Toxicity in Jatropha curcas L.
The biggest challenge for jatropha breeding is to identify superior genotypes that present high seed yield and seed oil content with reduced toxicity levels. Therefore, the objective of this study was to estimate genetic parameters for three important traits (weight of 100 seed, oil seed content, and phorbol ester concentration), and to select superior genotypes to be used as progenitors in jatropha breeding. Additionally, the genotypic values and the genetic parameters estimated under the Bayesian multi-trait approach were used to evaluate different selection indices scenarios of 179 half-sib families. Three different scenarios and economic weights were considered. It was possible to simultaneously reduce toxicity and increase seed oil content and weight of 100 seed by using index selection based on genotypic value estimated by the Bayesian multi-trait approach. Indeed, we identified two families that present these characteristics by evaluating genetic diversity using the Ward clustering method, which suggested nine homogenous clusters. Future researches must integrate the Bayesian multi-trait methods with realized relationship matrix, aiming to build accurate selection indices models.
Animal Science Department, Federal University of Viçosa, Viçosa, Minas Gerais, zipcode: 36570-000, Brazil.
Vinícius
V
Silva Junqueira
Biology Department, Federal University Viçosa, Viçosa, Minas Gerais, zipcode: 36570-000, Brazil.
Leonardo de
Ld
Azevedo Peixoto
Empresa Brasileira de Pesquisa Agropecuária, Embrapa Agroenergia, Parque Estação Biológica-PqEB s/n, Asa Norte, zipcode: 70770901, Brasília, Brazil.
Bruno
B
Galvêas Laviola
Biology Department, Federal University Viçosa, Viçosa, Minas Gerais, zipcode: 36570-000, Brazil.
Leonardo
L
Lopes Bhering
Empresa Brasileira de Pesquisa Agropecuária, Embrapa Agroenergia, Parque Estação Biológica-PqEB s/n, Asa Norte, zipcode: 70770901, Brasília, Brazil.
Simone
S
Mendonça
Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Recursos Genéticos e Biotecnologia, Parque Estação Biológica, PqEB, W5 Norte, Final PqEB, zipcode: 70770917, Brasília, Brazil.
Tania da Silveira
Tda S
Agostini Costa
Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Tecnologia Agroindustrial de Alimentos, Avenida das Americas 29501 Guaratiba, zipcode: 23020470, Rio de Janeiro, Brazil.
Rosemar
R
Antoniassi
D001499:Bayes Theorem; D014644:Genetic Variation; D031286:Jatropha / Q000235:genetics* / Q000254:growth & development; D010641:Phenotype; D010703:Phorbol Esters / Q000378:metabolism* / Q000633:toxicity; D010938:Plant Oils / Q000737:chemistry*; D019655:Quantitative Trait, Heritable; D012639:Seeds / Q000235:genetics* / Q000254:growth & development
D010703:Phorbol Esters; D010938:Plant Oils