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Field survey for chickpea wilt Fusarium oxysporum f.sp ciceris in north Syria and the pathogenicity of some its isolates

مسح حقلي لمرض ذبول الحُمّص Fusarium oxysporum f.sp ciceris في شمال سورية و دراسة القدرة الامراضية لبعض عزلاته

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 Publication date 2015
  fields Plant Protecion
and research's language is العربية
 Created by zeina alrostum




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A field survey for chickpea wilt disease Fusarium oxysporum f.sp ciceris was conducted in different provinces of north Syria during 2011 cropping season with the objectives to determine chickpea wilt distribution and factors affecting its development. Two hundred and fifty samples were collected from Alhasakah, Aleppo and Idleb fields. The results showed varying levels of incidence between and within provinces (2-90%), and the highest incidence was recorded in Alfouaa- Idleb (90%). The incidence and distribution of this disease seemed to be affected by many factors especially date of sown and soil kind. The pathogenicity test of 60 isolates related to Fusarium oxysporum on susceptible cultivars Ghab1 was shown that 54 isolates related to Fusarium oxysporum f. sp. ciceris; 32 isolates of them were caused yellowing symptoms and 22 were caused wilting symptoms.

References used
Anonymous, 1996- Adaption of chickpea in the west Asia and north Africa region. Edited by SAXENA N ,SAXENA M, JOHANSEN C, VIRMANI S and HARRIS H. ICRISAT/ ICARDA, 262pp
BOOTH C,1971- The Genus Fusarium, CMI, Kew, England, p. 137
BURGESS LW, SUMMERELL BA, BULLOCK S, GOTT KP, AND BACKHOUSE D, 1994- Laboratory manual for Fusarium research. Universit of Seydeny, 3th Edition. 133pp
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sixteen isolates of Fusarium oxysporum f. sp. ciceris (Foc ), representing six provinces (Al Hasakah, Aleppo, Idlib, Hamah, Homs and Dara) of Syria were analyzed for pathogenic variability on a set of 10 differential cultivars of chickpea.
Lentil, lens culinaris Medik in Syria , is the most important food legume crop in terms of its nutritive value and area cultivated. The crop suffers, during its growth stages, from infection with several pets and diseases, amongst which. lentil vascu lar wilt caused by Fusarium oxysporum Schlecht and Snyder f. sp. lentis is the most important because of the substantial yield losses it caused, that may reach in severely infected areas to 100%
The effect mycorhizal fungi on tomato wilt disease caused by Fusarium oxysporum was studied. The results showed that % of disease incidence reduced in treatment whit mycorrhizal fungi . % of disease incidence reached to 33% when plants infected wit h mycorrhizae and Fusarium wilt compared to plants infected with Fusarium wilt just where% of disease incidence reached to 70% .The results showed a sighificant increased in plant height ,leaf number , fresh and dry matter of shoot and root in treated plants with mycorrhiza and Fusarium wilt compared whit treated plants with Fusarium wilt.The increase in plant height reached 24.13% ,16.93% in leaf number,36.13% in wet weight of shoot ,48.14 in wet weight of root,30.37% in dry weight of shoot and 29.18% in dry weight of root in treated plants with mycorrhiza and Fusarium wilt.
Verticillium wilt is one of the most serious disease that affect olive trees, and it is spread all over the world where the olive trees grown. It is caused by the soil – borne fungiVerticilliumdahliaekleb. Whichhas a wide host range, and forms amic roseclerotia that survive for long time in the soil.and it is difficult to manage. In this studya survey was carried out in order to determine the incidence and severity of infection on olive trees in Lattakiaduring2015. The results showed that the highest percentage of infection and severity were on the Kaissicultivar in ALqurdaha (10.68% , 4.05%) respectively , and the lowest percentage of infection and severity were on the Safrawicultivar in ALqurdaha (3.92% , 0.97%) respectively.
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