Heritability in broad sense estimation to agricultural importance characters evaluated in a guava (Psidium guajava L.) population
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Abstract
valuables tropical and subtropical fruit tree, because it is a
natural source of vitamins and mineral salts. The inheritance
studies of quantitative characters in this specie are insufficient
worldwide and in our country they haven�??t been approached
up to date. A cross between cultivars �??Enana Roja Cubana�??
and �??N6�?? was made at the Unidad Científico Tecnológica de
Base de Alquízar, belonging to the Institute of Researches on
Tropical Fruit Culture, a total of 96 descendants were obtained
and they were planted according to a Complete Random
Design. Fourteen quantitative characters from fruits were
evaluated during a period of four years. Factorials Analyses of
Variance (Model II) were made with the data sets with the aim
of estimating the variance components and the heritability in
broad sense. These analyses were made using the SPSS
program. The characters: wide and length of fruit, length/wide
fruit ratio, diameter of calyx cavity, diameter of calyx cavity /
fruit ratio, number, total mass and average mass of seeds per
fruit showed medium values of heritability, while the others
characters showed low heritabilities. Twelve variables showed
a genotype-environment interaction variance that was
statistically significant, which facilitates the application of a
better refined model for the genotype-environment interaction
analysis.
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