Premium
Field assessment of a second generation backcross (BC1 × Passiflora edulis ) of passion fruit for agronomic performance and resistance to CABMV
Author(s) -
Jesus Onildo Nunes,
Santos Idalia Souza,
Lima Lucas Kennedy Silva,
Soares Taliane Leila,
Oliveira Eder Jorge
Publication year - 2021
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12888
Subject(s) - passiflora , biology , passion fruit , backcrossing , hybrid , horticulture , plant disease resistance , botany , microbiology and biotechnology , gene , biochemistry
The objective of this work was to characterize and identify among the passion fruit hybrids of the second generation backcross (BC2: BC1 × P. edulis ), resistance to passion fruit woodiness disease (CABMV) with desirable agronomic attributes. Ninety‐two progeny of BC2 hybrids were evaluated for severity of the virus in conditions of field, physical and chemical characterization of the fruits and precocity of the plant in relation to the vegetative and reproductive phases. The data were analysed using multivariate statistics and mixed models (REML/BLUP) to estimate genetic parameters. The σ g 2 was conditioned by σ d 2 and σ a 2 , for number of fruits, fruit and peel weight and soluble solids and the effect of σ a 2 for virus severity to CABMV and effect of σ d 2 on the variables fruit length, fruit diameter, peel thickness and pulp weight. For the titratable acidity it had no σ g 2 . The progeny BC2‐A, BC2‐C, BC2‐E, BC2‐F and BC2‐H families can be selected for use in passion fruit breeding programmes by adding high vegetative vigour, early fruit production, resistance to CABMV and also desirable agronomic attributes.