ISHS Acta Horticulturae 177: IV International Symposium on Flower Bulbs
BULBWEIGHT PARTITIONING PATTERNS OF SOME TULIP CULTIVARS |
| Authors: | G.G.M. van der Valk, P.N.A. Bruin |
| Abstract:
For handling a complicated process, like the production of tulip bulbs, models were developed at the Bulb Research Centre at Lisse. An important element of these models is the distribution of dry matter between the developing new bulbs which affects the variation of bulbsizes at harvest. Since size and weight determine the possibilities for future use of the bulbs a description of the partition of the harvested bulbs in size or weight classes is an essential element of a production model. In practice size is the main quality factor deciding about the use-potentials. Partitioning of harvested bulbweight over a range of sizes depends mainly on the cultivar and on the bulbweight produced per plant. For some cultivars, Apeldoorn, Kees Nelis, Madame Lefeber, Parade and Prominence, this weight partitioning was established from field experiments aiming at a wide range of bulb productions per plant by planting 4 or 5 bulbsizes at 4 plant densities. This approach will be discussed and some distribution characteristics will be shown. | |
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