Articles
TEMPERATURE AND DAYLENGTH REQUIREMENTS OF ALSTROEMERIA
Article number
51_28
Pages
267 – 274
Language
Abstract
The number of shoots of the Alstroemeria variety ‘Walter Fleming’ is influenced by temperature and daylength.
In the range of 13° to 25°C the number of shoots increase with the temperature.
After a period of 182 days more shoots had been formed at 9°C than at 13° and 17°C. At 13°C the development of shoots stopped nearly completely after 84 days.
At 9°C this occurred after 154 days.
With different daylengths most shoots were formed at short day, 8 hrs.
With increasing daylength, the number of shoots decreased.
The percentage of generative shoots decreased when the temperature was raised above 13°C.
In the range of 13° to 25°C the number of shoots increase with the temperature.
After a period of 182 days more shoots had been formed at 9°C than at 13° and 17°C. At 13°C the development of shoots stopped nearly completely after 84 days.
At 9°C this occurred after 154 days.
With different daylengths most shoots were formed at short day, 8 hrs.
With increasing daylength, the number of shoots decreased.
The percentage of generative shoots decreased when the temperature was raised above 13°C.
The number of leaves before flower initiation was lowest at 9°C. With different daylengths the highest percentage of generative shoots was found at 8 + 8 hrs and the lowest number at short day (8 + 0 hrs). The number of nodes decreased with increasing daylength, with the largest decrease between 8 + 0 and 8 + 4 hours.
Shoot development and flower initiation are promoted by different conditions.
Probably there is an interaction between the two processes, flower initiation inhibiting shoot development.
Authors
C. Vonk Noordegraaf
Keywords
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