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Isolation and Identification of Fungi Associated With Date Palms Phoenix dactylifera Offshoots Decline and Death Phenomenon in Basrah / Iraq | ||
| Basrah Journal For Date Palm Research | ||
| Article 1, Volume 9, Issue 1, 2010, Pages 84-99 PDF (0 K) | ||
| Authors | ||
| Mohammed A. Fayyadh; Yehya A. Salih; Alaa N. Ahmed | ||
| Abstract | ||
| This study was conducted in the laboratories of the Plant Protection Department/ Agriculture College/University of Basrah during the period of 2007-2008 in order to isolate and identify the fungi associated with the phenomenon of date palms offshoots deterioration and death in Basrah. The results of the survey study indicated that highest percentage of deterioration and death of the date palm offshoots were recorded in the Shatt Al-Arab area 18.13 and 71.38% respectively, followed by Hartha area 15.25 and 66.51% respectively. While, the lowest percentage of deterioration and death were recorded in Abu-Al-Khasseb area 4.7 and 19.05% respectively. The results showed that the death percentage of offshoots increased as the salinity and pH value increased in soil and irrigation water. On the other hand highest deterioration and death percentage of offshoots were recorded with Hillawi cultivar 17.41 and 62.59% respectively, followed by Sayer cultivar 16.19 and 62.59% respectively, while the percentage of the death of offshoots for the other cultivars such as Zahdi, Preim, Khadrawi and Pyarm was 57.57, 57.53, 56.98, 51.78% respectively. The isolation study from different parts of death and deterioration offshoots revealed isolation many fungi like Fusarium solani, F.moniliforme , Chalaropsis radicicola , Alternaria alternata, Rhizoctonia soloni, Cladosporium sp., Stemphylium sp. and other fungi. Among these fungi C.radicicola recorded the highest percentage of occurrence which were 91.1, 79.99 and 39.99% in Shatt Al-Arab , Al-Hartha and Abu-Al-Khasseb areas respectively. On the other hand all isolates of C.radicicola exhibited high pathogenicity of Hillawi seedlings . | ||
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