Author： Allen George S.
Publisher： Society of American Foresters
ISSN： 0022-1201
Source： Journal of Forestry, Vol.40, Iss.8, 1942-08, pp. : 642-644
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Abstract
This article presents data which indicate that parthenogenesis may occur in Douglas fir, that so-called parthenocarpy is a normal result of nonfertilization, and that self-sterility is very high. If Douglas fir is self-sterile as suggested, it follows that any condition which prevents adequate cross-pollination will resnlt in a poor seed crop. Application of this possibility to young seed trees, isolated seed trees, and artificial stimulation of seed production is indicated.
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