Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/25916
Tipo: Artigo
Título: Minimum number and best combinations of harvests to evaluate accessions of tomato plants from germplasm banks
Autor(es): Abreu, Flávia Barbosa
Silva, Derly José Henriques da
Marim, Bruno Garcia
Carneiro, Pedro Crescêncio Souza
Juhasz, Ana Cristina Pinto
Luca, Carina A.C. De
Valente, Reginaldo Fialho
Guimarães, Marcelo Almeida
Abstract: This study presents the minimum number and the best combination of tomato harvests needed to compare tomato accessions from germplasm banks. Number and weight of fruit in tomato plants are important as auxiliary traits in the evaluation of germplasm banks and should be studied simultaneously with other desirable characteristics such as pest and disease resistance, improved flavor and early production. Brazilian tomato breeding programs should con- sider not only the number of fruit but also fruit size because Brazilian consumers value fruit that are homogeneous, large and heavy. Our experiment was a randomized block design with three replicates of 32 tomato accessions from the Vegetable Germplasm Bank (Banco de Germoplasma de Hortaliças) at the Federal University of Viçosa, Minas Gerais, Brazil plus two control cultivars (Debora Plus and Santa Clara). Nine harvests were evaluated for four pro- duction-related traits. The results indicate that six successive harvests are sufficient to compare tomato genotypes and germplasm bank accessions. Evaluation of genotypes according to the number of fruit requires analysis from the second to the seventh harvest. Evaluation of fruit weight by genotype requires analysis from the fourth to the ninth harvest. Evaluation of both number and weight of fruit require analysis from the second to the ninth harvest.
Palavras-chave: Lycopersicon esculentum
Genetic resources
Principal components
Repeatability coefficient
Determination coefficient
Editor: Genetics and Molecular Biology
Tipo de Acesso: Open Access
URI: http://dx.doi.org/10.1590/S1415-47572006000100021
http://locus.ufv.br//handle/123456789/25916
Data do documento: 2006
Aparece nas coleções:Fitotecnia - Artigos

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