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Inner leaves blight of tissue culture date-palm (barhee variety) caused by fusarium solani after acclimatization stage and its control
Other Title(s)
لفحة الأوراق الداخلية لنخيل البلح صنف بارحي ناتج زراعة الأنسجة
Joint Authors
Rashid, Muhammad F.
al-Siyami, H. Sayyid
Qamhawi, Mahmud Ahmad
Awad, Majd al-Mursi
Source
Journal of Biological Chemistry and Environmental Sciences
Issue
Vol. 4, Issue 1 (31 Mar. 2009), pp.951-966, 16 p.
Publisher
Agricultural Chemistry and Environment Protection Society
Publication Date
2009-03-31
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Topics
Abstract AR
شوهدت أعراض مرضية جديده على نباتات نخيل صنف بارحى ناتج زراعة الأنسجة بعد مرحلة الأقلمة.
خلال شهرى مارس و أبريل (2008) ظهرت هذه الأعراض على هيئة بقع بنية داكنة غير منتظمة ذات هالة صفراء تتركز فى قمة الورقة قد تتحد هذه البقع لتغطي جزء كبير من الأوراق الداخلية و في النهاية تموت هذه الأوراق متجهة لقاعدة الورقة باتجاه القلب فى منطقة التاج و يتحول لونها للبني مما يعطي مظهر اللفحة على هذه الأوراق.كان لفطر Fusarium solani هو المسئول عن هذه الظاهرة.
وقد أثبتت اختبارات القدره المرضيه ان الفطرقادرعلى إحداث المرض.
أظهرت دراسة التشريح المرضي للجزء القاعدي للأوراق الداخلية أثبتت قدرة هيفا الفطر على غزو الأنسجة المختلفة لهذه المنطقة مع وجود مساحة متكرنزة فى الأوعية الناقلة مع حدوث انسداد لأوعية الخشب سواء بالتيلوزات أو مواد شبيهة بالصمغ.
أدى استخدام بعض المستحثات الى اختزال المرض و قد أظهرت النتائج أن الرش بالشيتوزان و حامض السلسيلك قد أدى إلى اختزال المرض بنسبة كبيرة فى حين لم يعطي الرش بالأندول حمض بيوتريك نتائج مرضية.
Abstract EN
During March-May 2008, new disease symptoms were observed in tissue culture date palm (Barhee cv.) in some Egyptian agricultural tissue culture laboratories after acclimatization stage.
The first symptoms appeared as irregular dark brown spots with a yellow hallow concentrated on the top with a yellow hallow of young unfolded leaves emerging from the bud.
Several spots may coalesce to cover large portion on the inner leaves and finally leaves were dead, and turned brown in color which give a blight appearance.
Sometimes, spots were not only present in the upper portion of the inner leaves but also it would be down ward to the core direction of the crown tissue.
Isolation trail from the unfolded leaves and crown yielded Fusarium solani, no pathogenic fungi were isolated from roots.
Pathogenicity tests indicated that the ability of the pathogen to attack the inner leaves and crown tissues causing disease symptoms as well as its ability to attack the old leaves causing brown blotches on both rachis and leaflets.
Histopathologically investigation of the basal parts of inner leaves (the core tissues) sections taken from artificially infected tissues with F.
solani indicated that the fungal hyphae were able to invade different tissues of basal parts of inner leaves with presence of necrotic parenchyma cells and xylem vessels blocked with tylosis and gummosis.
American Psychological Association (APA)
Rashid, Muhammad F.& al-Siyami, H. Sayyid& Qamhawi, Mahmud Ahmad& Awad, Majd al-Mursi. 2009. Inner leaves blight of tissue culture date-palm (barhee variety) caused by fusarium solani after acclimatization stage and its control. Journal of Biological Chemistry and Environmental Sciences،Vol. 4, no. 1, pp.951-966.
https://search.emarefa.net/detail/BIM-273006
Modern Language Association (MLA)
Rashid, Muhammad F.…[et al.]. Inner leaves blight of tissue culture date-palm (barhee variety) caused by fusarium solani after acclimatization stage and its control. Journal of Biological Chemistry and Environmental Sciences Vol. 4, no. 1 (Mar. 2009), pp.951-966.
https://search.emarefa.net/detail/BIM-273006
American Medical Association (AMA)
Rashid, Muhammad F.& al-Siyami, H. Sayyid& Qamhawi, Mahmud Ahmad& Awad, Majd al-Mursi. Inner leaves blight of tissue culture date-palm (barhee variety) caused by fusarium solani after acclimatization stage and its control. Journal of Biological Chemistry and Environmental Sciences. 2009. Vol. 4, no. 1, pp.951-966.
https://search.emarefa.net/detail/BIM-273006
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 963-965
Record ID
BIM-273006