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- Title
Epiphytic Population Dynamics of Olive Knot Pathogenic Bacterium, Pseudomonas savastanoi pv. Savastanoi.
- Authors
Bilal Ibrahim Wreikat; Hamid Mustafa Khlaif
- Abstract
The dynamics of an epiphytic population of Pseudomonas savastanoi pv. savastanoi, the causal agent of olive knot disease was studied during 2015/2016 growing season at Al-Neir in Wadi Al-Sir in Jordan. The pathogen was recovered from washing leaves collected from symptomless as well as sick trees. The recovered population was found to change with fluctuations in air temperature and relative humidity. The higher epiphytic population was recovered during spring and fall seasons, while the lower one was recovered during summer and winter seasons. The highest recovered population, which was obtained during the first week of June, coincided with an average temperature of 21.5°C and relative humidity of more than 52%. During the field inspection, newly formed knots appeared late in June, following the highest epiphytic population. In Jordan, the occurrence of this pathogen as epiphytic population and their fluctuations in relation to temperature and RH on olive leaves could bring to light a new dimension in the epidemiology of disease as well as a source of primary disease inoculum.
- Subjects
EPIPHYTIC bacteria; OLIVE; PSEUDOMONAS; OLEACEAE; PSEUDOMONADACEAE
- Publication
Jordan Journal of Agricultural Sciences, 2017, Vol 13, Issue 4, p977
- ISSN
1815-8625
- Publication type
Article