ISHS Acta Horticulturae 320: International Symposium on Selection and Breeding of Woody Ornamentals
DETERMINATION OF PHYSIOLOGICAL CHARACTERISTICS OF GREENHOUSE ROSES (ROSA HYBRIDA) BY CUTTING AND GROWING IN CLIMATIC CHAMBERS |
| Authors: | E. BERNINGER, R. BARRADE |
| Abstract:
Estimating the photo-thermal requirements of the successive phases of development, which account for flowers production and earliness of roses. The major hindrances, with greenhouse studies, are due to - the large variations of temperature T and irradiance PAR, the close link between T and PAR (the relation Tg = Tb + | |
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PAR is highly significative). In order to separate T-and PAR-effects, it is necessary to work in climatic chambers.
