NDLI: Bud and crown architecture of white spruce and black spruce

Content Provider	Springer Nature Link
Author	Colombo, Stephen J. Templeton, Colin W. G.
Copyright Year	2006
Abstract	Needle primordia in buds and branch lengths were assessed in the crown of a plantation-grown white spruce tree. There was a gradation in needle primordia in buds in branches within the crown. The largest number of primordia was in the terminal bud of the leading main stem shoot, with the number in first-order whorl lateral shoot terminal buds decreasing from whorl 1 to whorl 4, below which buds contained a similar small number of primordia (about one-third as many as in the terminal shoot). Previous year's shoot elongation followed a similar pattern (i.e., elongation of whorl branches was greater closer to the top of the tree and elongation in the fourth through ninth whorls was about one-third that of the main stem leader). Higher order branches within whorls had within-branch gradation in shoot elongation and number of needle primordia, with older branches having as few as 16–30 primordia in buds and 3–4 cm elongation for high-order branches on older main stem whorls. There were strong correlations between the number of primordia in branch terminal buds and branch length/diameter and bud length/diameter/volume. In both black spruce and white spruce, there were strong correlations of number of needle primordia in main stem leader terminal buds with number of needle primordia in terminal buds of first and second whorl leaders.
Starting Page	633
Ending Page	641
Page Count	9
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	20
Issue Number	5
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-08-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Shoot growth Needle primordia Predetermined growth Free growth Crown architecture Plant Physiology Plant Pathology Plant Anatomy/Development Plant Sciences Forestry Agriculture
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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