Estimation of genetic parameters related to morphoagronomic and fruit quality traits of papaya

Abstract

The estimation of genetic parameters allows an identification of the genetic variability in a population andunderlies the choice of the most suitable improvement methods. This study aimed to estimate the genetic parameters related tomorpho-agronomic and fruit quality traits in the following papaya genotypes: 16BC1S1, 52BC1S1, 115BC1S1, SS 72/12 x 4BC1,BC2, SS 783 and Golden. Based on the means and respective standard deviations and on the estimates of genetic parametersof the evaluated traits, it was concluded that selection in the segregating generations has great chances of success, in view ofthe wide genotypic variability among them, with values of H2 (coefficient of genotypic determination) of over 80% for mostevaluated phenotypic attributes. Considering the importance of the flowering and fruiting attributes, the high H2 indicates thatimprovement programs can achieve great increases in papaya yield.

Keywords

• Carica papaya
• fruit yield
• carpelloidy
• pentandry
• female sterility