TITLE:
Genetic Correlation between Agronomically Important Traits in Yellow Passion Fruit
AUTHORS:
Leonarda Grillo Neves, Claudio Horst Bruckner, Marcelo Coutinho Picanço, Severino de Paiva Sobrinho, Kelly Lana Araújo, Petterson Baptista da Luz, Marco Antonio Aparecido Barelli, Willian Krause
KEYWORDS:
Canonical Correlation; Passiflora edulis; Path Correlation
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.4 No.11,
November
13,
2013
ABSTRACT: Breeding
programs have sought to determine the minimum period of genotype evaluation,
which is a long term-process. The objective of this work was to determine the
association between qualitative traits of yellow passion fruit (Passiflora edulis Sims) and relate
maturity to other characteristics. To carry out this work, 113 families of full-sibs and half-sibs were planted
in Viçosa (MG), Brazil, in a randomized block experimental design arranged in
sets (treatment groups). The association between the analyzed characteristics
was studied using path analysis and canonical correlation techniques. It
was found that lower-yielding but larger-fruit bearing genotypes of
passion fruit plant also require more days until reaching anthesis. Round-shaped
fruits are linked to higher contents of total soluble solids. More intense pulp
color also indicates higher contents of total soluble solids. The riper the
fruit, the more intensely orange is the color of the pulp. The ratio between
the levels of total soluble solids and total titrimetric acidity was the main
determinant of pulp color for passion fruit.