Genetic divergence between hybrids and reciprocals of passion fruit based on emergence and seedling vigor

Renato Domiciano Silva Rosado, Luciana Domiciano Silva Rosado, João Paulo Gava Cremasco, Carlos Eduardo Magalhães dos Santos, Denise Cunha Fernandes dos Santos Dias, Cosme Damião Cruz

Abstract


Traits related to seed quality have been little used in studies on genetic diversity in passion fruit. The objective of this study was to evaluate the genetic diversity between progenies constituted by hybrids and reciprocals based on seed emergence and vigor traits. The 28 th day counted the percentage of emergence, emergency speed index, shoot length, root length and total length of seedling; dry weight, number of normal seedlings and weight of 100 seeds, in completely randomized design experiment with 20 progenies (hybrid and reciprocal) and 4 replicates (50 seeds). Genetic diversity was determined using the Tocher optimization clustering methods and the unweighted mean linkage between groups, based on the Mahalanobis distance, as well as to evaluate the relative contribution of the traits to the genetic divergence and the correlation network according to the relations between the groups of traits quality, length and mass. The trait that contributed the most to a genetic divergence were total length seedlings and the reciprocal effect did not present consistent pattern in the hybrid combinations studied.

Keywords


Passiflora edulis Sims, cytoplasmic effects, biometric

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