ARCHITECTURAL STRUCTURE OF TWO SPECIES OF PROTEA GROWN IN SOILLESS CULTIVATION

ISHS Acta Horticulturae 387: III International Protea Research Symposium

**ARCHITECTURAL STRUCTURE OF TWO SPECIES OF PROTEA GROWN IN SOILLESS CULTIVATION**

Authors:

P. Allemand, M. Montarone, M. Le Bris

Abstract:
Experience with soilless farming, with numerous vegetable, arboraceous or floral species, allows us to state that this technique does not modify in any way, the proper architectural features of the species. However, it can cause considerable changes in quantitative aspects of their development, if the nutrition-substrate system is well adapted.

In order to develop proper techniques for cut flower production, we studied the ramification (branching) and flowering processes of seedling populations of P. eximia and P. neriifolia.

The results of these studies enable us to determine :

the pruning and harvesting methods that are most adapted to architectural features of the species (for instance, acrotony);
with some degree of precision, the level of physiological maturity for flowering.

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