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Analysis of Sesquiterpene Distributions in the Leaves, Branches, and Trunks of Avocado (Persea americana Mill.)

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Author(s): Jerome Niogret | Nancy D. Epsky | Elena Q. Schnell | Raymond J. Schnell | Robert R. Heath | Alan W. Meerow | Paul E. Kendra

Journal: American Journal of Plant Sciences
ISSN 2158-2742

Volume: 04;
Issue: 04;
Start page: 922;
Date: 2013;
Original page

Keywords: Avocado | Persea americana | Sesquiterpenes | α-Copaene | Redbay Ambrosia Beetle | Xyleborus glabratus

ABSTRACT
Avocado is a commercially valuable fruit crop cultivated in tropical and subtropical climates throughout the world. Taxonomists recognize three horticultural races of avocado, consisting of Mexican (Persea americana var. drymifolia), Guatemalan (P. americana var. guatemalensis), and West Indian (P. americana var. americana) varieties. Published research that attempted to differentiate among the horticultural races by using leaf chemistry found that sesquiterpene content was only useful for discrimination of pure Mexican from Guatemalan and West Indian, but not to distinguish between Guatemalan and West Indian races. This study presents a sampling method for analysis of sesquiterpenes from avocado leaf, branch and trunk samples. Our results indicate that sesquiterpene content from leaves and small diameter branches (

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