12495920

Source:http://linkedlifedata.com/resource/pubmed/id/12495920

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0003737, umls-concept:C0010384, umls-concept:C0023693, umls-concept:C0040811, umls-concept:C0205384, umls-concept:C0226993, umls-concept:C0949899, umls-concept:C1049149, umls-concept:C1253959, umls-concept:C1527148
pubmed:issue	1
pubmed:dateCreated	2002-12-23
pubmed:abstractText	To investigate crown development patterns, branch architecture, branch-level light interception, and leaf and branch dynamics were studied in saplings of a plagiotropically branching tree species, Polyalthia jenkinsii Hk. f. & Thoms. (Annonaceae) in a Malaysian rain forest. Lengths of branches and parts of the branches lacking leaves ('bare' branches) were smaller in upper branches than in lower branches within crowns, whereas lengths of 'leafy' parts and the number of leaves per branch were larger in intermediate than in upper and lower branches. Maximum diffuse light absorption (DLA) of individual leaves was not related to sapling height or branch position within crowns, whereas minimum DLA was lower in tall saplings. Accordingly, branch-level light interception was higher in intermediate than in upper and lower branches. The leaf production rate was higher and leaf loss rate was smaller in upper than in intermediate and lower branches. Moreover, the branch production rate of new first-order branches was larger in the upper crowns. Thus, leaf and branch dynamics do not correspond to branch-level light interception in the different canopy zones. As a result of architectural constraints, branches at different vertical positions experience predictable light microenvironments in plagiotropic species. Accordingly, this pattern of carbon allocation among branches might be particularly important for growth and crown development in plagiotropic species.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/0372347
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Jan
pubmed:issn	0305-7364
pubmed:author	pubmed-author:OsadaNoriyukiN, pubmed-author:TakedaHiroshiH
pubmed:copyrightInfo	Copyright 2003 Annals of Botany Company
pubmed:issnType	Print
pubmed:volume	91
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	55-63
pubmed:dateRevised	2009-10-19
pubmed:meshHeading	pubmed-meshheading:12495920-Light, pubmed-meshheading:12495920-Plant Leaves, pubmed-meshheading:12495920-Polyalthia, pubmed-meshheading:12495920-Trees
pubmed:year	2003
pubmed:articleTitle	Branch architecture, light interception and crown development in saplings of a plagiotropically branching tropical tree, Polyalthia jenkinsii (Annonaceae).
pubmed:affiliation	Laboratory of Forest Ecology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan. ss29326@mail.ecc.u-tokyo.ac.jp
pubmed:publicationType	Journal Article, Research Support, Non-U.S. Gov't