volume 44, issue 6, P827-843 1966
DOI: 10.1139/b66-097
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Abstract: Observations were made on relationships between contents of winter buds and subsequent shoot growth characteristics of Betula papyrifera, B. alleghaniensis, Populus tremuloides, and P. grandidentata. In both species of Betula, winter buds expected to produce long shoots contained both embryonic leaves and leaf primordia. Both early and late leaves were produced by growing shoots. In contrast, in both species of Populus all leaves produced on the observed shoots appeared at bud break and matured rapidly. Evide…

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