Estimation of Genetic Parameters of Turiaçu Pineapple Clones and Genetic Correlation between Traits

Abstract

This study aimed to estimate genetic parameters of Turiaçu pineapple clones using mixed models; and estimate genetic correlation coefficient between traits, to provide important information to breeding programs. For this, 19 pineapple plants were visually selected and its slips were collected and planted in a single environment and nine traits were evaluated. The genetic parameters of most evaluated traits presented significant differences between the 19 clones. Some traits, such as Fusarium wilt resistance, showed high magnitudes of heritability. Clones did not differ in relation to total titratable acidity (TTA) and total soluble solids (TSS). However, these traits, which have implications to fruit quality, showed to be negatively correlated to fruit mass (−0.46 and −0.67). The results indicate that the population of Turiaçu pineapple is suitable for selection, especially for Fusarium wilt resistance. Also, Turiaçu clones can be used in breeding programs of pineapple.

PARÁMETROS GENÉTICOS DE CARACTERÍSTICAS BIOMÉTRICAS DEL FRUTO Y SEMILLA EN Caesalpinia ebano (FABACEAE)

“…La predicción del valor genético depende de la estimación de los componentes de varianza (Abreu et al, 2017). Para tal fin, se considera el coeficiente de variación genético, la heredabilidad en sentido amplio y estricto, el avance y la ganancia genética (Cruz et al, 2012;Jamoza et al, 2014).…”