<Emphasis Type="Italic">Neofusicoccum parvum</Emphasis> associated with fruit rot and shoot blight of peaches in Greece |
| |
| Authors: | Thomas Thomidis Themis J Michailides Efstathia Exadaktylou |
| |
| Institution: | (1) Alexander Technological Education Institute of Thessaloniki, 57400, Macedonia, Sindos, Greece;(2) Department of Plant Pathology, Davis, Kearney Agriculture Center, University of California, 9240 South Riverbend Ave, Parlier, 93648, USA |
| |
| Abstract: | Shoot blights and fruit rots comprise the most serious diseases of peaches in Greece. In this study, the importance of the
fungus Neofusicoccum parvum as a casual agent of a fruit rot and shoot blight of peach trees in Greece was investigated. This pathogen was isolated from
both immature and mature peach fruit of the cultivar “Catherine” and later on from mature fruit of the peach cultivars “Andross”,
“RedHaven”, “Sun Crest” and “Sun Cloud”. In the first year of investigation, N. parvum was found causing preharvest fruit rot and shoot blights of peach trees only at the location “Ammos-Mesi-Meliki Verias” in
the prefecture of Imathia (the main peach production area of Greece) at incidences of 30 and 8%, respectively. However, in
2006 N. parvum was isolated from more locations such as Diavatos, Veria, Kopanos and Agia Marina in the prefecture of Imathia, but only
at less than 3% of the total surveyed rotted peach fruit and blighted shoots. The pathogen overwintered as sub-epidermal pycnidia
in blighted shoots or mummified fruit that remained on peach trees. This study also showed that the optimum temperature for
mycelial growth and conidial germination of N. parvum was 25 oC. Pathogenicity tests using peach fruit showed that isolates of N. parvum and Diplodia seriata (isolated from pistachio grown in the same region) showed no significant differences in their virulence. In laboratory inoculation
tests using detached shoots from 25 peach and nectarine cultivars, N. parvum isolates obtained from rotted peaches caused different size cankers on these cultivars. The cultivar Big Top was the most
susceptible while the cultivar Maria Bianca the least susceptible. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
