مسح حقلي لمرض الطرف الأسود على القمح و تطوره تحت ظروف التخزين في محافظة الرقة-سورية
Other Title(s)
Field survey of the black point disease on wheat crop and its development under storage conditions at Raqqa province, Syria
Joint Authors
بيك، نبيل الأحمد
الخليفة، محمد
الأحمد، أحمد
Source
Issue
Vol. 20, Issue 2 (31 Dec. 2002), pp.137-144, 8 p.
Publisher
Arab Society for Plant Protection
Publication Date
2002-12-31
Country of Publication
Lebanon
No. of Pages
8
Main Subjects
Abstract EN
The study was carried out to survey the occurrence of black point disease on wheat kernels in Raqqa province, Syria during the 1998/1999 and 1999/2000 growing seasons, and to evaluate storage influence on disease development.
The survey included 184 fields grown with durum and bread wheat cultivars, in eight major growing areas, from which randomized grain samples at harvesting time were collected in both seasons.
Samples from two different sites as well as at two different directions and depths (15 and 25 cm) were taken from grain heaps stored at El-Baleakh purchasing center, Raqqa.
Grain samples were tested to determine the percentage and severity of infection, and the pathogens involved in this disease.
This sampling process was replicated at four dates with two months interval.
Results showed that Bohouth 5 (durum wheat) was the most affected cultivar in terms of percentage and severity of infection, in both seasons compared with bread wheat cultivars, and this was more clear in 1999/2000 compared to 1998/1999 season.
Alternaria alternata (Fr.) Keissler and Fusarium spp.
was found to be the most frequent fungi (94%) associated with affected kernels, but Cladosporium herbarum Link, Cochiliobolus sativus Drechsler and Curvularia sp.
were less frequent (6%).
According to storage period, grains showed significant increases in percentage and severity of infection, and the most affected kernels were from the fourth sampling date.
Moreover, these differences were highly significant in the central part of the heap, in the southeastern compared with the northeastern site, and at depth 25 cm compared with 15 cm.
Isolation from the stored grains at different dates showed that gradual decrease in the frequency of field fungi, and increase in the storage ones such as Penicillium spp.
and Aspergillus niger Van Tiegh did occure
American Psychological Association (APA)
الخليفة، محمد والأحمد، أحمد وبيك، نبيل الأحمد. 2002. مسح حقلي لمرض الطرف الأسود على القمح و تطوره تحت ظروف التخزين في محافظة الرقة-سورية. مجلة وقاية النبات العربية،مج. 20، ع. 2، ص ص. 137-144.
https://search.emarefa.net/detail/BIM-376612
Modern Language Association (MLA)
الخليفة، محمد....[و آخرون]. مسح حقلي لمرض الطرف الأسود على القمح و تطوره تحت ظروف التخزين في محافظة الرقة-سورية. مجلة وقاية النبات العربية مج. 20، ع. 2 (كانون الأول 2002)، ص ص. 137-144.
https://search.emarefa.net/detail/BIM-376612
American Medical Association (AMA)
الخليفة، محمد والأحمد، أحمد وبيك، نبيل الأحمد. مسح حقلي لمرض الطرف الأسود على القمح و تطوره تحت ظروف التخزين في محافظة الرقة-سورية. مجلة وقاية النبات العربية. 2002. مج. 20، ع. 2، ص ص. 137-144.
https://search.emarefa.net/detail/BIM-376612
Data Type
Journal Articles
Language
Arabic
Notes
يتضمن مراجع ببليوجرافية : ص. 143-144
Record ID
BIM-376612