Carbohydrate, Amino Acid, and Inorganic Constituents of Leaves of Two Hosts of the Elm Spanworm

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Abstract:

Soluble carbohydrates, free amino acids. and 11 major inorganic constituents were determined in juvenile and mature leaves of pignut hickory, Carya glabra(Mill.) Sweet, and southern red oak, Quercus falcata Michx. var. falcata,hosts of Ennomos subsignarius(Hübner). These constituents all differed with the species and maturation of the leaves. The total soluble carbohydrates and free amino N did not change with maturation of oak leaves, but both decreased substantially with maturation of hickory leaves. Hickory leaves contained more free carbohydrates and ash but less free amino N than did oak leaves. Acid hydrolysis of leaf extracts increased both the relative concentrations and the number of amino acids. In both species, P, K, Zn, Na, and Cu decreased and Ca, Al, and Fe increased with leaf maturation.

Document Type: Research Article

Publication date: October 15, 1971

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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