Modules of reproduction in females of the dioecious shrub Oemleria cerasiformis

Mitchell, Matthew G. E., Antos, Joseph A. and Allen, Geraldine A. (2004) Modules of reproduction in females of the dioecious shrub Oemleria cerasiformis. Canadian Journal of Botany, 82 3: 393-400. doi:10.1139/b04-018


Author Mitchell, Matthew G. E.
Antos, Joseph A.
Allen, Geraldine A.
Title Modules of reproduction in females of the dioecious shrub Oemleria cerasiformis
Formatted title
Modules of reproduction in females of the dioecious shrub Oemleria cerasiformis
Journal name Canadian Journal of Botany   Check publisher's open access policy
ISSN 1916-2790
1916-2804
Publication date 2004-03-01
Year available 2004
Sub-type Article (original research)
DOI 10.1139/b04-018
Volume 82
Issue 3
Start page 393
End page 400
Total pages 8
Place of publication Ottawa, ON, Canada
Publisher N R C Research Press
Language eng
Formatted abstract
Plants are composed of modules that may be integrated to varying degrees. To examine the extent of integration for photosynthate in female Oemleria cerasiformis (H. & A.) Landon at different times during reproduction, we defoliated terminal branch systems at two scales (0.25 and 1.0 m) just after flowering. Fruit set and mass in the current year were unaffected by defoliation, indicating that developing fruits were strong sinks that could effectively draw on photosynthate from leaves at least 1 m away. In the subsequent year, however, defoliated branches grew very little and produced few flowers and almost no fruits, indicating that storage, growth, and the initiation of flowers and fruit did not utilize carbon resources from leaves only 0.25 m away. Thus, there is no single module size for photosynthate in O. cerasiformis. Because fruits are a strong sink that can draw carbon resources from a considerable distance, high fruit set followed by adverse conditions can lead to generalized resource depletion within a plant, which may result in mortality and contribute to the male-biased sex ratios often observed in O. cerasiformis.
Keyword Costs of reproduction
Defoliation
Fruit set
Fruit mass
Integrated physiological units
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
Non HERDC
 
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Created: Sat, 06 Sep 2014, 02:23:48 EST by Matthew Mitchell on behalf of School of Geography, Planning & Env Management