Seasonal Changes in Specific Leaf Weight and Leaf Anatomy of Apple

in HortScience
Authors:
Jon D. WoogeDepartment of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

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John A. BardenDepartment of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

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Abstract

Newly expanded interior canopy leaves of apple (Malus domestica Borkh.) had lower specific leaf weight (SLW), leaf thickness, palisade depth, and number of palisade cell layers than middle or peripheral leaves from late May to early October. Leaves on the periphery of the canopy had the highest SLW values at all sample dates. Differences in leaf SLW, leaf thickness, and palisade depth between interior and peripheral leaves increased as the season progressed, primarily due to increases in peripheral leaves that developed later in the season. Regression analysis showed SLW to be significantly correlated with leaf thickness and palisade depth.

Contributor Notes

Received for publication 27 May 1986. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.

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