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Adriel Lima Nascimento, Omar Schmildt, Geraldo Antônio Ferreguetti, Willian Krause, Rodrigo Sobreira Alexandre, Edilson Romais Schmildt, Paulo Cézar Cavatte and José Augusto Teixeira do Amaral

Abstract: Physiological disturbances are one of the major bottlenecks to the
expansion of papaya crops due to the negative influence on fruit quality. Studies
on genotypes of light-green color have become essential to the development of
strategies of tolerance to the physiological disorder skin freckle. Understanding
the inheritance of qualitative traits is crucial to selection and prediction of
the behavior of segregating generations. Thus, this study aimed to determine
the inheritance of the qualitative trait leaf color in segregating generations
of crosses between the dark-green cultivar BSA and the light-green cultivar
GPC. Inheritance was determined based on the Mendelian genetics laws, by
evaluating the phenotypic proportions in the analysis of generations P1 (BSA),
P2 (GPC), F1, F2, BC1, BC2, BC2r, and F2:3. The inheritance of light-green leaves
from the crossing between BSA and GPG is due to double recessive epistasis.

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