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- Title
How pine cones open.
- Abstract
Discusses how the scales of seed-bearing pine cones move in response to changes in relative humidity. How the scales gape open when it is dry, releasing the cone?s seeds and how when it is damp, the scales close up; The cells in a mature cone are dead, so the mechanism is passive: the structure of the scale and the walls of the cells composing the scale respond to changing relative humidity; How dissection of cones from the Monterey pine, Pinus radiata, revealed two types of scale growing from the main body of the cone--the ovuliferous scale and the bract scale.respond to changes in relative humidity; How the larger ovuliferous scales respond to changes in relative humidity when removed from the body of the cone.
- Subjects
PINE cones; CONES (Botany); HUMIDITY; PINACEAE
- Publication
Nature, 1997, Vol 390, Issue 6661, p668
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/37745