Effect of Infection by Sclerotinia sclerotiorum on Constituents of Cucumber Plants of Phenols and Amino Acids | ||||
| Egyptian Journal of Phytopathology | ||||
| Article 13, Volume 44, Issue 1, June 2016, Page 175-189 PDF (557.86 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejp.2016.92379 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mohamed Khalil* ; Zaki Mustafa; Abeer El-Ghanim | ||||
| Plant Pathol. Res. Inst., Agric. Res. Centre, Giza, Egypt | ||||
| Abstract | ||||
| Over the last few years, white mould disease was one of the most important diseases causing severe losses on cucurbit plants in many Egyptian governorates, particularly under commercial plastic houses. Investigation was carried out to isolate and identify the causative agent (s).Five fungal isolates were obtained from different governorates and were pathogenic to Delta-star RZ hybrid of cucumber. Moreover, the isolates obtained from the naturally infected cucumber plants grown in Giza Governorate (Gizerat El-Dahab) were the highly virulent. On the other hand, plants of eight cucumber hybrids were evaluated for their susceptibility to infection by the white mould disease. Results indicated that Delta-star RZ (hyb.) gave the highest percentage of disease susceptibility, while Marmar hybrid showed the less percentage. Data elucidated that the amounts of free, total phenols and conjugated compounds were somewhat higher in the non-infected healthy highly resistant hyb, Marmar than those observed in the more susceptible hyb. Delta-star RZ particularly at 40 days after infection. On the other hand, total free amino acids were increased in response to infection with any highly virulent or low virulent isolate, Delta-star RZ showed the highest figure particularly after 40 days than the less susceptible hyb, Marmar. | ||||
| Keywords | ||||
| Amino acids; cucumber; hybrids; phenols and Sclerotinia sclerotiorum | ||||
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