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Volume Volume 74 (1996)
EL-SHEHABY, A., KOREM, S. (1996). REACTION OF ONION CULTIVARS TO INFECTION BY FUSARIUM SOLANI AND F. OXYSPORUM. F. SP. CEPAE. Egyptian Journal of Agricultural Research, 74(4), 879-889. doi: 10.21608/ejar.1996.429299
ABDALLAH I. EL-SHEHABY; SALAH O. KOREM. "REACTION OF ONION CULTIVARS TO INFECTION BY FUSARIUM SOLANI AND F. OXYSPORUM. F. SP. CEPAE". Egyptian Journal of Agricultural Research, 74, 4, 1996, 879-889. doi: 10.21608/ejar.1996.429299
EL-SHEHABY, A., KOREM, S. (1996). 'REACTION OF ONION CULTIVARS TO INFECTION BY FUSARIUM SOLANI AND F. OXYSPORUM. F. SP. CEPAE', Egyptian Journal of Agricultural Research, 74(4), pp. 879-889. doi: 10.21608/ejar.1996.429299
EL-SHEHABY, A., KOREM, S. REACTION OF ONION CULTIVARS TO INFECTION BY FUSARIUM SOLANI AND F. OXYSPORUM. F. SP. CEPAE. Egyptian Journal of Agricultural Research, 1996; 74(4): 879-889. doi: 10.21608/ejar.1996.429299

REACTION OF ONION CULTIVARS TO INFECTION BY FUSARIUM SOLANI AND F. OXYSPORUM. F. SP. CEPAE

Article 1, Volume 74, Issue 4, December 1996, Page 879-889  XML PDF (2.84 MB)
Document Type: Original Article
DOI: 10.21608/ejar.1996.429299
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Authors
ABDALLAH I. EL-SHEHABY1; SALAH O. KOREM2
1Plant Pathology Research Institute, Agricultural Res. Centre, 12619, Giza
2Field Crops Research institute, Agricultural Research Centre, Egypt
Abstract
Giza 6 Mohassan, Giza 20 and Shandaweel 1 onion cultivars were tested for their reaction to Fusarium solani and F. oxysporum f.sp. cepae. Infesting soil with these pathogens significantly increased seedling damping off of all cultivars compared with non-infested soil. Giza 6 Mo-hassan was the most susceptible cultivar to seedling infection with F. so-lani. Infection with these pathogens also significantly reduced length of seedlings, with F. solani being more deleterious and Giza 20 was less af-fected compared to Gin 6 Mohassan and Shandaweel 1. Infection of transplants of all cultivars with F. solani significantly increased basal rot and storage bulb rot. F.oxysporum f.sp cepae was not significantly effec-tive in basal rot except with Shandaweel 1, and low level of infection de-veloped during subsequent storage except with Giza 20. On the other hand, Shandaweel 1 was the least susceptible cultivar to bulb rot caused by F. oxysporum f. sp. cepae. Cultivars did not differ significantly when inoculated with F. solani. Bulb infection with F. solani - contrary to F. oxy-sporum f. sp cepae, resulted in a significant loss in bulb weight. It is speculated that, mating Giza 20 and Giza 6 Mohassan could lead to a re-duced seedling damping - off, basal rot and post - harvest bulb rot, and a less adverse effect on seedling length.
 
Keywords
Fusairum wilt; Onion; Cultivars; Seedling Damping-off; Basal rot
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