RESISTANCE OF ALPHONSO MANGO-CALTIVER TO THE MARGARDOID MEALYBUG, ICERYA SEYCHELLARUM (WESTWOOD) IN RELATION TO LEAF QUALITY: I. LEAF SECONDARY METABOLITES.
ABD ELRAHMAN, M., SALEM, M., EL-SAID, M., ABD EL-GHANY, A. (2006). RESISTANCE OF ALPHONSO MANGO-CALTIVER TO THE MARGARDOID MEALYBUG, ICERYA SEYCHELLARUM (WESTWOOD) IN RELATION TO LEAF QUALITY: I. LEAF SECONDARY METABOLITES.. EKB Journal Management System, 84(1), 17-29. doi: 10.21608/ejar.2006.228922
MONZER M. ABD ELRAHMAN; MOHAMED S. SALEM; MAHA I. EL-SAID; AHMED M. ABD EL-GHANY. "RESISTANCE OF ALPHONSO MANGO-CALTIVER TO THE MARGARDOID MEALYBUG, ICERYA SEYCHELLARUM (WESTWOOD) IN RELATION TO LEAF QUALITY: I. LEAF SECONDARY METABOLITES.". EKB Journal Management System, 84, 1, 2006, 17-29. doi: 10.21608/ejar.2006.228922
ABD ELRAHMAN, M., SALEM, M., EL-SAID, M., ABD EL-GHANY, A. (2006). 'RESISTANCE OF ALPHONSO MANGO-CALTIVER TO THE MARGARDOID MEALYBUG, ICERYA SEYCHELLARUM (WESTWOOD) IN RELATION TO LEAF QUALITY: I. LEAF SECONDARY METABOLITES.', EKB Journal Management System, 84(1), pp. 17-29. doi: 10.21608/ejar.2006.228922
ABD ELRAHMAN, M., SALEM, M., EL-SAID, M., ABD EL-GHANY, A. RESISTANCE OF ALPHONSO MANGO-CALTIVER TO THE MARGARDOID MEALYBUG, ICERYA SEYCHELLARUM (WESTWOOD) IN RELATION TO LEAF QUALITY: I. LEAF SECONDARY METABOLITES.. EKB Journal Management System, 2006; 84(1): 17-29. doi: 10.21608/ejar.2006.228922

RESISTANCE OF ALPHONSO MANGO-CALTIVER TO THE MARGARDOID MEALYBUG, ICERYA SEYCHELLARUM (WESTWOOD) IN RELATION TO LEAF QUALITY: I. LEAF SECONDARY METABOLITES.

Egyptian Journal of Agricultural Research
Article 3, Volume 84, Issue 1, January 2006, Page 17-29  XML PDF (438.7 K)
Document Type: Original Article
DOI: 10.21608/ejar.2006.228922
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Authors
MONZER M. ABD ELRAHMAN1; MOHAMED S. SALEM2; MAHA I. EL-SAID1; AHMED M. ABD EL-GHANY1
1Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
2Faculty of Agriculture, Cairo University, Giza, Egypt
Abstract
The generalist insect herbivore, Icerya seychellarum (Westwood) heavily infests mango trees (Mangifera indica) and can complete its entire life cycle on this plant. However, we observed that mango cultivars are not equally susceptible to I. seychellarum infestation. While mango trees of Sultani cv are heavily infested and severely damaged, trees of Alphonso cv are completely free of I. seychellarum infestation. Comparison between the two cultivars leaves and their total extracts in chemotaxis, feeding and toxicity assays revealed that leaf material of Alphonso cv. contained I. .ychellarum repellant, feeding deterrent and toxic substance. The leaf components of secondary metabolites were screened using solvent/solvent extraction technique followed by gas chromatographic/mass spectrometric (GC-MS) analysis to determine which compound(s) best explained the repellent and toxic properties of Alphonso mango cv. The results suggested that p­cymene, camphene, and limonene play an important role in resistance of Alphonso mango cv. to I. seychel/arum infestation.
Keywords
Mangifera indica; Cultivars; Icetya seychellarum; Resistance; Secondary metabolites
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