Estimation of genetic parameters related to morpho-agronomic and fruit quality traits of papaya
Francisco Filho da Silva, Messias Gonzaga Pereira, Helaine Christine Cancela Ramos, Pedro Corrêa Damasceno Junior, Telma Nair Santana Pereira, Alexandre Pio Viana, Rogério Figueiredo Daher and Geraldo Antônio Ferreguetti
Abstract: The estimation of genetic parameters allows an identification of the genetic variabiliry in a population and underlies the choice ofthe most suitable improvement methods. This study aimed to estimate the genetic parameters related to morpho-agronomic and fruit quality traits in the following papaya genotypes: 16BC;S,, 52BC,S1, 115BC,S,, SS 72/12 x 4BC, BC», SS 783 and Golden. Based on the means and respective standard deviations and on the estimates of genetic parameters of the evaluated traits, it was concluded that selection in the segregating generations has great chances of success, in view of the wide genotypic variability among them, with values of coefficient of genotypic determination (H?) over 80% for most evaluated phenotypic attributes. Considering the importance of the flowering and fruiting attributes, the high H? indicates that improvement programs can achieve great increases in papaya yield.