Characterization ofpinus pinasterseedling growth in different photo‐ and thermoperiods in a phytotron as a basis for early selection
作者:
Anne Nguyen,
Ingegerd Dormling,
Antoine Kremer,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1995)
卷期:
Volume 10,
issue 1-4
页码: 129-139
ISSN:0282-7581
年代: 1995
DOI:10.1080/02827589509382876
出版商: Taylor & Francis Group
关键词: apex morphology;climate chamber;early testing;height growth;maritime pine;maturation
数据来源: Taylor
摘要:
Seedlings ofPinus pinasterfamilies exhibiting monocyclic or polycyclic adult growth patterns, were cultivated in climate chambers during two successive growth periods separated by a period of low temperature to satisfy the chilling requirement. Six treatments combining photoperiod and temperature factors were tested. The morphology of the apex was assessed and height and biomass measured. First season seedlings grown in continuous light varied in apex morphology from the typical juvenile rosette to the adult bud usually found outdoors on 2‐yr‐old plants. It seems possible to distinguish monocyclic and polycyclic populations at an early stage by characters related to development and growth height. The results indicate that special environmental conditions during seedling development may be used as a tool in the search for criteria for early selection.
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