Agronomic indicators and genetic parameters in six tomato (Solanum lycopersicum L.) cultivars
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Abstract
In order to evaluate agronomic indicators and estimate genetic parameters, six tomato cultivars were established in two locations, using a randomized complete block design with four replications. Eight morphoagronomic variables were evaluated, including agricultural yield. The data were processed with the Statistica statistical package, which was used to perform two-factor analysis of variance, double classification and random effects, the latter to decompose the total phenotypic variance. Multiple comparison of means was performed through Tukey's test p≤0.05. Simple correlation analysis was also performed among the variables evaluated. The results showed significant effects of genotype-environment interaction in 75 % of the variables under study. Coefficients of environmental variation were high for all traits and heritability estimates, in a broad sense, were very low. Simple correlations were high and positively significant between the characters fruit mass per plant and fruit number per plant, fruit diameter and fruit mass per plant, yield and fruit number per plant, yield and fruit mass per plant, and yield and fruit diameter.
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