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The aim of this study was to estimate the percentage of deformed fruits (carpelloid, pentandric, and bananoid), summer sterility, repeatability coefficients, and correlations among the variables for floral abnormalities; and select genotypes with the lowest incidence of deformed fruits and summer sterility. In the experiment, which involved 254 plants, traits were evaluated using the digital-phenotypic method and the obtained images were processed and analysed using ImageJ v1.48 software with the Cell Counter plugin. Summer sterility had the highest percentage of occurrence in the evaluated periods. Based on the quantification of total abnormalities, the 30 genotypes with the lowest incidence of floral abnormalities were selected. Summer sterility is the main BASIC AREAS Article Quantification of f loral abnormalities in a population generated from sexual polymorphism aiming at recurrent selection in papaya Nádia Fernandes Moreira1*, Telma Nair Santana Pereira1, Renato Santa Catarina1, Diego Fernando Marmolejo Cortes2, Júlio Cesar Fiorio Vettorazzi1, Helaine Christine Cancela Ramos1, Alexandre Pio Viana1, Messias Gonzaga Pereira1 1.Universidade Estadual do Norte Fluminense Darcy Ribeiro Centro de Ciências e Tecnologias Agropecuárias Laboratório de Genética e Melhoramento de Plantas Campos dos Goytacazes, (RJ) Brazil. 2.Empresa Brasileira de Pesquisa Agropecuária Mandioca e Fruticultura Cruz da Almas (BA), Brazil. *Corresponding author: nadia_fernandesm@yahoo.com.br Received: May 29, 2018 – Accepted: Nov. 12, 2018 problem of the papaya crop in terms of floral abnormalities. The non-significant correlations between the traits: NDF/TNF+NFN (number of deformed fruits/number of fruits + number of fruitless nodes) and NFS/TNF+NFN (number of fruitless nodes/number of fruits + number of fruitless nodes); NDF/TNF+NFN and NFN/SUM ( n u m b e r o f f r u i t l e ss n o d e s /s u m o f a b n o r m a l i t i e s ) ; a n d NFS/TNF+NFN and NDF/SUM (number of deformed fruits/sum of abnormalities) indicate that the variables are independent of each other. Of the 254 evaluated progenies, at least 30 were identified as having potential for selection, with lower occurrence of total floral abnormalities.

Quantification of floral abnormalities in a population generated from sexual polymorphism aiming at recurrent selection in papaya