The effect of temperature on uptake of NAA by leaves of Redchief 'Delicious' Apple

Document Type

Article

Journal/Book Title/Conference

Journal of the American Society for Horticultural Science

Volume

120

Issue

3

Publication Date

5-1-1995

First Page

441

Last Page

445

Abstract

The effect of temperature on uptake of C-labeled NAA was determined using detached apple leaves. Uptake by both adaxial and abaxial surfaces was measured at 15 and 35C over a 24-hotm period. Foliar absorption of NAA by the abaxial surface was greater than that by the adaxial surface. Absorption by the abaxial surface increased linearly (P < 0.001) with temperature over the range of 15 to 35C. These results are discussed in relation to fruit thinning. Chemical name used: 2-(1-naphthyl)acetic acid (NAA).

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