Articles
ACCELERATING MATURITY IN PICEA SEEDLINGS
Article number
56_9
Pages
105 – 114
Language
Abstract
When several species and interspecific hybrids of spruce (Picea) were grown from seed under a 24-hour photoperiod with optimal temperature, moisture, and nutrient levels they did not enter dormancy, but exhibited a continuous and vigorous free growth.
This "accelerated- optimal-growth" treatment shortened the juvenile period and promoted precocious flowering after out-planting.
The seedlings also demonstrated a more rapid or mature growth rate after outplanting at an earlier age than naturally-grown spruce. Picea pungens seedlings grown initially under natural conditions did not respond to the extended photoperiod treatment after reaching three or more years of age.
This "accelerated- optimal-growth" treatment shortened the juvenile period and promoted precocious flowering after out-planting.
The seedlings also demonstrated a more rapid or mature growth rate after outplanting at an earlier age than naturally-grown spruce. Picea pungens seedlings grown initially under natural conditions did not respond to the extended photoperiod treatment after reaching three or more years of age.
Publication
Authors
E. Young, James W. Hanover
Keywords
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