Vol. 71 No: 4

Title:
The Growth and Quality of Axillary Shoots of Chrysanthemum as Affected by Number and Position

Authors:
HENRIEKE A. DE RUITER and J. TROMP

pp: 607-612

Abstract:
Under completely controlled conditions, the effect of assimilate supply (as determined by leaf area, i.e. the number of available leaves) on quality of chrysanthemum cuttings reflected in weight, cutting diameter and growth rate, was evaluated. Cutting quality increased when the ratio between the number of axillary shoots and the number of leaves decreased from 4/16 to 1/16. Even when the ratio was 4/16, cutting quality was high and differences between the four cuttings were small, if present. The number of pith cells at the largest diameter in transverse sections of an axillary bud was lower than at the base of the cutting it produces. The number of pith cells at the cutting base increased when the ratio between the number of axillary shoots and the number of leaves decreased. The data are discussed in terms of effects of assimilate level on apical dominance and on sink-source relationships.

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