Individual selection of the first backcross generation of passion fruit potentially resistant to the fruit woodiness disease
Título del documento: Individual selection of the first backcross generation of passion fruit potentially resistant to the fruit woodiness disease
Revue: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000436157
ISSN: 0001-3765
Autores: 1
2
2
3
2
2
2
Instituciones: 1Universidade do Estado de Mato Grosso, Laboratorio de Melhoramento Genetico Vegetal, Caceres, Mato Grosso. Brasil
2Universidade Estadual do Norte Fluminense, Laboratorio de Melhoramento Genetico Vegetal, Campos dos Goytacazes, Rio de Janeiro. Brasil
3Universidade Federal do Cariri, Departamento de Agronomia, Juazeiro do Norte, Ceara. Brasil
Año:
Volumen: 92
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Aplicado, descriptivo
Resumen en inglés The REML/BLUP procedure has been successfully used for genetic progress through individual selection of high-yielding passion fruit genotypes resistant to the Cowpea aphid-borne mosaic virus. This study was thus developed to estimate genetic parameters and predict the gain obtained from individual selection of genotypes in a population derived from backcrosses in passion fruit. The experiment was set up as a randomized block design with four replicates, involving five full-sib families (genotypes from the first backcross). Variance components and the genetic values were estimated for eight agronomic traits via the REML/BLUP procedure. For all traits, genotypic variance between the genotypes from the first backcross showed little contribution to the phenotypic variance. The low heritability estimates obtained for the traits are overcome via individual BLUP estimates. Therefore, it was possible to obtain considerable gains with individual selection for the variables fruit length, average fruit weight, and pulp weight (19.50 to 14.04%; 22.93 to 17.97%; and 10.08 to 7.95%, respectively). For the traits showing lower gains, it is possible to obtain gains indirectly by selecting genotypes for correlated traits. Because this population derives from the first backcross generation, agronomic traits still must be recovered
Disciplinas: Agrociencias
Palabras clave: Frutales,
Fitotecnia,
Mejoramiento genético,
Resistencia a plagas,
Virus del endurecimiento del fruto,
Hibridación interespecífica,
Passiflora edulis,
Passifloraceae
Keyword: Fruit trees,
Crop husbandry,
Genetic improvement,
Pests resistance,
Cowpea aphid-borne mosaic virus,
Interspecific hybridization,
Passiflora edulis,
Passifloraceae
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