Bud Development in Lodgepole Pine
Formation of a new terminal bud in lodgepole pine begins during the period of active shoot elongation. Typical terminal buds contain three cycles of lateral appendages and are termed "polycyclic." Observations of the progress of short-shoot and long-shoot bud morphogenesis at selected levels within each shoot cycle showed that the period of bud formation lasted from May until October. There were development gradients within and between cycles. Needle primordia in the upper cycle did not form until the following spring. The delayed development of major lateral buds appears to be an important determinant of crown form. Forest Sci. 17:479-486.
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Document Type: Journal Article
Affiliations: Dep. of Forest Science, Utah State University, Logan
Publication date: 1971-12-01
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