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Provedor de dados:  Horticultura Brasileira
País:  Brazil
Título:  Correlations between yield and fruit quality characteristics of fresh market tomatoes
Autores:  Souza,Lívia M de
Melo,Paulo César T
Luders,Reginaldo R
Melo,Arlete MT
Data:  2012-12-01
Ano:  2012
Palavras-chave:  Solanum lycopersicum L.
Hybrid combinations
Vegetable breeding
Diallel cross
Tomato genotypes
Resumo:  Genotypic, phenotypic and environmental correlations were estimated for all possible pairs among eleven characters of tomatoes. Fifteen treatments including five parents and ten hybrids of Instituto Agronômico (IAC) tomato breeding program were evaluated using a randomized complete block experimental design, with tree replications in Itatiba, São Paulo state, Brazil, during 2005/2006. The following traits were evaluated: fruit yield per plant (FP), fruit number per plant (FN), average fruit weight (FW), cluster number per plant (CN), fruit number per cluster (FC), number of locules per fruit (NL), fruit length (FL), fruit width (WI), fruit wall thickness (FT), total soluble solids (SS), and total titratable acidity (TA). The genotypic (rG), phenotypic (rF) and environmental correlations (rA) for two pairs of plant traits were estimated using the Genes© program. High similarity was found among the estimates of genotypic and phenotypic correlations. Positive and high phenotypic and genotypic correlations were observed between FP and the traits FN, FW and FT, and these associations contributed for yield increasing. FW and FT contributed to yield increase and should be considered together as primary yield components in tomato. Positive values of the genotypic and phenotypic correlations revealed that FP influenced FN with high direct effect and significant positive correlation. These traits may be included as the main selection criteria for tomato yield improvement.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Associação Brasileira de Horticultura
Relação:  10.1590/S0102-05362012000400011
Formato:  text/html
Fonte:  Horticultura Brasileira v.30 n.4 2012
Direitos:  info:eu-repo/semantics/openAccess

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