Responses of landraces and commercial cultivars of yellow passion fruit to the prevalence of Fusarium oxysporum

Responses of landraces and commercial cultivars of yellow passion fruit to the prevalence of Fusarium oxysporum

Yellow passion fruit (Passiflora edulis f. flavicarpa) is a fruit of high economic potential in Colombia, but the prevalence of some diseases often makes growers stop cultivating it. Also, varieties´ tolerance against some pathogens that have high prevalence in Colombia have not been released. The o...

Full description

Saved in:
Bibliographic Details
Published in:Agronomía colombiana Vol. 41; no. 1; p. e104450
Main Authors: Bernal Moreno, Juan Pablo, Rodríguez, Nohra
Format: Journal Article
Language:English
Published: Bogota Universidad Nacional de Colombia 01-01-2023
Centro Editorial of Facultad de Ciencias Agrarias, Universidad Nacional de Colombia
Subjects:
Chlorophyll
chlorophyll content
chlorosis degree
Conductance
Cultivars
Fruit cultivation
Fruits
Fusarium oxysporum
Fusarium wilt
Genetic variability
Germination
Inoculation
Leaves
Passiflora edulis
Passiflora edulis f. flavicarpa
Passion fruit
Pathogens
Plants (botany)
Population studies
Populations
Stomata
Stomatal conductance
Colombia
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Yellow passion fruit (Passiflora edulis f. flavicarpa) is a fruit of high economic potential in Colombia, but the prevalence of some diseases often makes growers stop cultivating it. Also, varieties´ tolerance against some pathogens that have high prevalence in Colombia have not been released. The objective of this study was to contribute to the characterization of 63 populations of yellow passion fruit, including 46 cultivars and 17 landraces. The plants were evaluated using morphoagronomic descriptors (leaves, flowers, and fruits) as well as ecophysiological parameters (stomatal conductance, chlorophyll content, and degree of chlorosis) evaluated against the 21-02129 strain of Fusarium oxysporum isolated from purple passion fruit (gulupa, in Spanish). Results showed low levels of germination (55% landraces and 50% cultivars). The landraces populations showed greater morphological variability and greater tolerance to the pathogen expressed by the chlorophyll concentration from intact leaf samples on 28 d post inoculation (dpi) (landraces: 458±108 μmol m-2 and cultivars: 411±125 μmol m-2) and stomatal conductance (landraces: 90.8±14.9 mmol m-2 s-1 and cultivars: 87.1±34.1 mmol m-2s-1). The study revealed a good potential for tolerance to this pathogen in landraces, so it is necessary to carry out research aimed at preserving this diversity in situ and ex situ as well as a continuous analysis of these populations.
ISSN:0120-9965
2357-3732
DOI:10.15446/agron.colomb.v41n1.104450