+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Reproductive effort in plants 1. carbon allocation to reproduction

Reproductive effort in plants 1. carbon allocation to reproduction

American Midland Naturalist 129(6): 876-896

Reproductive effort, or the proportion of an organism's resources allocated to reproduction, is a crucial aspect of an organism's life history; the optimal allocation of resources to reproduction in different environments has been the subject of much theorizing. Adequate tests of these theories have been hampered by the difficulties involved in assessing reproductive effect. In this paper, we address the problem of determining which structures and activities should be considered part of reproduction, using Agropyron repens as the experimental material. We approached the problem by first determining the structures and activities necessary for vegetative growth and then determining reproductive structures and activities by subtraction. Using carbon as the currency of allocation, we defined vegetative growth as those structures directly involved in the capture of carbon (i.e., leaves) plus all necessary support structures and activities. The necessary support structures and activities were determined by comparison with vegetative plants grown under similar conditions. Reproduction in A. repens involves not only the production of flowering and fruiting structures, but also the production of a substantial amount of stem material, the loss of carbon through respiration, and carbon gain through photosynthesis. Reproductive photosynthesis includes both direct photosynthesis by the reproductive structures and reproductive enhancement of leaf photosynthesis. Simple measures of reproductive effort based on biomass allocation to flowering and fruiting structures do not adequately reflect carbon allocation to reproduction since there is both genotypic and environmentally induced variation among plants in the amount of reproductive stem material and in the ability to compensate for the cost of reproduction through reproductive photosynthesis.

Accession: 006316859

Download citation: RISBibTeXText

DOI: 10.2307/2461834

Download PDF Full Text: Reproductive effort in plants 1. carbon allocation to reproduction

Related references

Amended version of ba 84065220. reproductive effort in plants 1. carbon allocation to reproduction. American Naturalist 129(6): 876-896, 1987

Reproductive effort in plants 2. does carbon reflect the allocation of other resources?. American Midland Naturalist 129(6): 897-906, 1987

Amended version of ba 84065222. reproductive effort in plants 2. does carbon reflect the allocation of other resources. American Naturalist 129(6): 897-906, 1987

Optimal energy allocation models - an alternative to the concepts of reproductive effort and cost of reproduction. Acta Oecologica, 121: 11-33, 1991

Reproductive allocation and reproductive effort in plants. (see Book Title) [Author] Fenner, M (Ed ) Seeds: The ecology of regeneration in plant communities x+373p C A B International: Wallingford, England, UK; Tucson, Arizona, USA Illus ISBN 0-85198-726-5 : 1-26, 1992

Allocation of reproductive effort in perennial plants under pollen limitation. American Naturalist 144(3): 373-394, 1994

Reproductive effort in clonal plants constant allocation ratios among ramets. Oecologia (Berlin) 72(3): 358-359, 1987

Allocation of reproductive effort to the male and female strategies in wind pollinated plants. Oecologia (Berlin) 45(2): 156-159, 1980

Reproductive effort in plants 3. effect of reproduction of vegetative activity. American Midland Naturalist 129(6): 907-919, 1987

Reproductive effort in plants. 3. Effect of reproduction on vegetative activity. American naturalist 129(6): 907-919, 1987

Regulatory mechanisms of reproductive effort in plants iii. plasticity in reproductive energy allocation and propagule output of two grass species oryza sativa cultivar akihikari and coix ma yuen cultivated at varying densities and nitrogen levels and the evolutionary ecological implications. Plant Species Biology 4(1): 75-100, 1989

Amended version of ba 84065221. reproductive effort in plants 3. effect of reproduction of vegetative activity. American Naturalist 129(6): 907-919, 1987

Reproductive effort, reproductive costs and optimal allocation models: a comment on Kozlowski's paper. Acta Oecologica, 121: 175-176, 1991

A comparison of reproductive allocation and reproductive effort between semelparous and iteroparous fucoids (Fucales, Phaeophyta). Hydrobiologia 326-327(0): 185-190, 1996