Influence of Early-Season Temperature on the Growth and Branching of Newly-Grafted Apple Trees |
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| Authors: | M F Abbas J D Quinlan W R Buckley |
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| Institution: | 1. East Mailing Research Station, Maidstone, Kent ME19 6BJ, UK;2. Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT, UK |
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| Abstract: | Newly-grafted trees of apple cv Discovery on MM.106 were grown in pots at 25°C before transfer to growth rooms at 20°C; some were then subjected to 5 or 10 d at 10°C. The continuous 5-d cool period stimulated branching without reducing main shoot growth but the 10-d cool period reduced main shoot growth and did not stimulate branching. Subjecting similar plants to a night temperature of 0°C for various periods also stimulated branching but the number of cold nights and the stage of scion shoot growth influenced the magnitude of the response. |
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