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Seed size and shape are good predictors of seed persistence in soil in temperate mountain grasslands of Argentina

Published online by Cambridge University Press:  22 February 2007

Guillermo Funes ,
Sandra Basconcelo ,
Sandra Díaz  and
Marcelo Cabido
Guillermo Funes*
Affiliation:
Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba. Casilla de Correo 495, 5000, Córdoba, Argentina
Sandra Basconcelo
Affiliation:
Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba. Casilla de Correo 495, 5000, Córdoba, Argentina
Sandra Díaz
Affiliation:
Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba. Casilla de Correo 495, 5000, Córdoba, Argentina
Marcelo Cabido
Affiliation:
Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba. Casilla de Correo 495, 5000, Córdoba, Argentina
*
*Correspondence Fax: +54 351 4332104 Email: gfunes@imbiv.unc.edu.ar
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Abstract

We tested whether seed mass and shape are good predictors of seed persistence in the soil of subhumid temperate montane grasslands of central Argentina. We plotted seed mass against variance of seed dimensions of 71 herbaceous species and obtained information on their persistence in the soil from a previous experiment on germinable seed banks. We identified a certain seed mass/shape combination beyond which no seed was persistent in the soil, with the exception of the annual Tagetes minuta. Our results confirmed the patterns previously reported for British species: small and compact seeds tend to persist in the soil for a longer time than big and elongated or flattened seeds. We suggest that the value of seed mass and shape as predictors of persistence in the soil can be extended beyond the British flora to herbaceous floras from other humid temperate regions.

Keywords

dormancygrasslandseed bankseed massseed shape
Type
Research Article
Information
Seed Science Research , Volume 9 , Issue 4 , April 1999 , pp. 341 - 345
Copyright
Copyright © Cambridge University Press 1999

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