Incidence and Genetic Variability of Erysiphe Cichoracearum, the Causal Agent of Powdery Mildew on Squash and Cucumber in Tubas and Jenin
An experiment was carried out in 2008 to study the incidence of Erysiphe cichoracearum, the causal agent of powdery mildew on squash and cucumber in different growing seasons of the Tobas and Jenin districts. The incidence was studied in both open fields and plastic houses. Also, the research studie...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
An-Najah National University
2011-09-01
|
| Series: | مجلة جامعة النجاح للأبحاث العلوم الطبيعية |
| Online Access: | https://journals.najah.edu/media/journals/full_texts/incidence2-and-genetic-variability-erysiphe-cichoracearum-causal-agent-powdery-mildew-squash-and-cucu-3.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | An experiment was carried out in 2008 to study the incidence of
Erysiphe cichoracearum, the causal agent of powdery mildew on squash
and cucumber in different growing seasons of the Tobas and Jenin
districts. The incidence was studied in both open fields and plastic
houses. Also, the research studied the genetic variability between the
fungal isolates using RAPD. The maximum fungal incidence was
recorded on squash, compared with cucumber in all growing seasons.
The maximum disease incidence of 70% was recorded on squash during
both spring and summer growing seasons in Tobas district. Autumn was
considered the second most serious growing season of both crops as the
fungal incidence ranged from 4 to 53% and 3 to 42% on squash and
cucumber, respectively. In late winter growing season, the fungal
incidence was much lower on both crops planted in Tobas district
compared with the other growing seasons (4 to 20% on squash and 2 to
18% on cucumber) . In addition, studying the genetic variability between
the fungal isolates showed that these isolates were genetically different
between Tobas and Jenin districts. Furthermore, polymorphism was in squash and cucumber from obtained isolates the between observed
Tobas district while no polymorphism was recorded in Jenin district. |
|---|---|
| ISSN: | 1727-2114 2311-8865 |