Control of the first flowering in forest trees1
作者:
Wladyslaw Chalupka,
RobertA. Cecich,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1997)
卷期:
Volume 12,
issue 1
页码: 102-111
ISSN:0282-7581
年代: 1997
DOI:10.1080/02827589709355390
出版商: Taylor & Francis Group
关键词: Early flowering;genetic control;gibberellin;juvenility;precocity;selection
数据来源: Taylor
摘要:
Precocious flowering provides opportunities to shorten a breeding cycle. A tree may flower for the first time when sufficient crown development has occurred and there are enough meristems to support both vegetative and reproductive buds. Precocious flowering can be promoted through the use of cultural techniques, such as photoperiod, accelerated growth, gibberellins and water stress. The length of the juvenile phase is dependent on genetic and environmental variables that affect achievement of a minimum size, and is positively correlated with the height of the plants within a family. Selection pressure can be applied successfully to the precocious flowering character, and crossed or inbred lines of precocious flowering progeny can be developed. Various levels and amounts of genetic control have been implicated in the control of precocious flowering.
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