Author： Duffield John W.
Publisher： Society of American Foresters
ISSN： 0015-749X
Source： Forest Science, Vol.31, Iss.2, 1985-06, pp. : 427-429
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Abstract
When resin midge is a problem, attack is heavy on young ponderosa pines with viscid spring shoots, but light on trees with glaucous or glabrous spring shoots. Progenies of crosses involving only glabrous or glaucous parents contained no viscid individuals, while progenies of crosses involving viscid parents had high frequencies of viscid offspring. Significance for breeding programs is discussed. Forest Sci. 31:427-429.
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