Publisher's Synopsis
Excerpt from Physiologische Untersuchungen Uber Dickenwachstum und Holzqualitat von Pinus Silvestris
Auere Reize werden nur innerhalb jener Grenzen wirksam sein konnen, welche durch die der Species innewohnende Reaktionsfahigkeit gegeben sind. Diese Reaktionsfahigkeit ist eine durch Vererbung erlangte Eigenschaft, welche aber in den einzelnen Altersstadien des Baumes und je nach den aueren Verhaltnissen verschiedene Abstufungen aufweist.
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