Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)

Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)

13 páginas, 7 figuras, 1 tabla.

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Bibliographic Details
Main Authors: Gasque, M., García-Fayos, P.
Other Authors: Generalitat Valenciana
Format: artículo biblioteca
Language:English
Published: Kluwer Academic Publishers 2003-09
Subjects:Afterripening, Lemma and palea, Seed dormancy, Seed longevity, Seed scarification, Semiarid steppes,
Online Access:http://hdl.handle.net/10261/33528
http://dx.doi.org/10.13039/501100003359
http://dx.doi.org/10.13039/501100003339
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spelling dig-cide-es-10261-335282019-10-01T12:58:11Z Seed dormancy and longevity in Stipa tenacissima L. (Poaceae) Gasque, M. García-Fayos, P. Generalitat Valenciana Consejo Superior de Investigaciones Científicas (España) Afterripening Lemma and palea Seed dormancy Seed longevity Seed scarification Semiarid steppes 13 páginas, 7 figuras, 1 tabla. In the present paper we studied the life history traits related to seed germination of Stipa tenacissima, a key species in semiarid environments of western Mediterranean areas. S. tenacissima is a perennial tussock grass, which has traditionally been considered to expand mainly by vegetative propagation with little or no sexual reproduction. We analysed seed longevity as well as the type of seed dormancy and the role of the seed covers from seeds collected from different populations in SE Spain. We also studied the variation in seed germinability among populations, individuals, and years and the ability of seeds of S. tenacissima to form soil seed banks. There was significant variation in seed germination among individuals, populations and years. Lemma and palea were the main factor controlling these differences since their removal promoted higher and faster germination and eliminated the differences in germination parameters among populations. However, the control of dormancy by lemma and palea was independent of their weight, suggesting that their chemical nature plays a more important role than does size in controlling seed germination. Mechanical scarification treatments ( via abrasion with sand) did not affect seed germination. The decay in seed germinability two years after seed collection and the low density of viable seeds in soils one year after seed dispersal indicated that S. tenacissima forms transient soil seed banks. This study has been funded by the Plan Valenciano de Ciencia y Tecnología, (project GV-2311/94) and by a doctoral grant of the Consejo Superior de Investigaciones Científicas to María Gasque. Two anonymous referees provided critical comments on an earlier version of the manuscript. Peer reviewed 2011-03-17T19:30:22Z 2011-03-17T19:30:22Z 2003-09 artículo http://purl.org/coar/resource_type/c_6501 Plant Ecology 168(2): 279-290 (2003) 1385-0237 http://hdl.handle.net/10261/33528 10.1023/A:1024471827734 http://dx.doi.org/10.13039/501100003359 http://dx.doi.org/10.13039/501100003339 en http://dx.doi.org/10.1023/A:1024471827734 none Kluwer Academic Publishers
institution CIDE ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-cide-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del CIDE España
language English
topic Afterripening
Lemma and palea
Seed dormancy
Seed longevity
Seed scarification
Semiarid steppes
Afterripening
Lemma and palea
Seed dormancy
Seed longevity
Seed scarification
Semiarid steppes
spellingShingle Afterripening
Lemma and palea
Seed dormancy
Seed longevity
Seed scarification
Semiarid steppes
Afterripening
Lemma and palea
Seed dormancy
Seed longevity
Seed scarification
Semiarid steppes
Gasque, M.
García-Fayos, P.
Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)
description 13 páginas, 7 figuras, 1 tabla.
author2 Generalitat Valenciana
author_facet Generalitat Valenciana
Gasque, M.
García-Fayos, P.
format artículo
topic_facet Afterripening
Lemma and palea
Seed dormancy
Seed longevity
Seed scarification
Semiarid steppes
author Gasque, M.
García-Fayos, P.
author_sort Gasque, M.
title Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)
title_short Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)
title_full Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)
title_fullStr Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)
title_full_unstemmed Seed dormancy and longevity in Stipa tenacissima L. (Poaceae)
title_sort seed dormancy and longevity in stipa tenacissima l. (poaceae)
publisher Kluwer Academic Publishers
publishDate 2003-09
url http://hdl.handle.net/10261/33528
http://dx.doi.org/10.13039/501100003359
http://dx.doi.org/10.13039/501100003339
work_keys_str_mv AT gasquem seeddormancyandlongevityinstipatenacissimalpoaceae
AT garciafayosp seeddormancyandlongevityinstipatenacissimalpoaceae
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