Influence of shrub cover on germination, dormancy and viability of buried and unburied seeds of Piptochaetium napostaense (Speg.) Hackel
In the semi-arid rangelands of central Argentina, heavy continuous grazing has produced shrub encroachment and a decrease in the abundance of valuable perennial grasses. The objective of this work was to study the effect of shrub cover on germination, dormancy and viability of buried and unburied se...
Gespeichert in:
| Veröffentlicht in: | Journal of arid environments 2007-03, Vol.68 (4), p.509-521 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 521 |
|---|---|
| container_issue | 4 |
| container_start_page | 509 |
| container_title | Journal of arid environments |
| container_volume | 68 |
| creator | Mayor, M.D. Bóo, R.M. Peláez, D.V. Elía, O.R. Tomás, M.A. |
| description | In the semi-arid rangelands of central Argentina, heavy continuous grazing has produced shrub encroachment and a decrease in the abundance of valuable perennial grasses. The objective of this work was to study the effect of shrub cover on germination, dormancy and viability of buried and unburied seeds of
Piptochaetium napostaense, a native perennial grass abundant in the pastures and highly preferred by grazing animals. Field germination of seeds was rare, especially on the soil surface, probably due to high temperatures and lack of humidity. At the end of the field experiment, seeds were collected, tested for viability and incubated in the lab under optimal conditions for germination. Viability was high for all treatments (93–98%) indicating that seeds were not affected by the very high temperatures (up to 55
°C) measured in the field. Seeds that had been buried between shrubs showed the highest rate of germination in the lab (56%); germination of seeds buried under shrub cover was relatively low (18%); and seeds that had remained in the litter layer showed poor germination ( |
| doi_str_mv | 10.1016/j.jaridenv.2006.07.005 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_19511500</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0140196306002369</els_id><sourcerecordid>19511500</sourcerecordid><originalsourceid>FETCH-LOGICAL-c397t-cab9ad6c5ee6a6c3571504200c747800bb71b3784d1c72b537095794456872783</originalsourceid><addsrcrecordid>eNqFkcFu1DAQhiMEEkvhFcAXUJFIGCdxnNyoKqCVKoFUKnGzJs5k6yWxg52stG_AY9dhF3HsybL9_Z7xN0nymkPGgVcfd9kOvenI7rMcoMpAZgDiSbLh0Ii0yfOfT5MN8BJS3lTF8-RFCDsAzoUoNsmfa9sPC1lNzPUs3PulZdrtyTNn2Zb8aCzOxtkPrHN-RKsPDG3H9gZbM5j5sKbaxRvq_p4v9rQJRF1YL7-baXb6Hmk2y8gsTi7MSDYQO7-daJu9Z1eof9HwMnnW4xDo1Wk9S-6-fP5xeZXefPt6fXlxk-qikXOqsW2wq7QgqrDShZBcQBn_rWUpa4C2lbwtZF12XMu8FYWMEmRTlqKqZS7r4ix5d3x38u73QmFWowmahgEtuSUo3oioBiCC1RHU3oXgqVeTNyP6g-KgVvFqp_6JV6t4BVJF8TH49lQBg8ah99GaCf_TdQl5Lnnk3hy5Hp3CrY_M3W0OvIiz4bKp1xY-HQmKQvaGvArarLPqjCc9q86Zx5p5AIzvppY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>19511500</pqid></control><display><type>article</type><title>Influence of shrub cover on germination, dormancy and viability of buried and unburied seeds of Piptochaetium napostaense (Speg.) Hackel</title><source>Elsevier ScienceDirect Journals Complete</source><creator>Mayor, M.D. ; Bóo, R.M. ; Peláez, D.V. ; Elía, O.R. ; Tomás, M.A.</creator><creatorcontrib>Mayor, M.D. ; Bóo, R.M. ; Peláez, D.V. ; Elía, O.R. ; Tomás, M.A.</creatorcontrib><description>In the semi-arid rangelands of central Argentina, heavy continuous grazing has produced shrub encroachment and a decrease in the abundance of valuable perennial grasses. The objective of this work was to study the effect of shrub cover on germination, dormancy and viability of buried and unburied seeds of
Piptochaetium napostaense, a native perennial grass abundant in the pastures and highly preferred by grazing animals. Field germination of seeds was rare, especially on the soil surface, probably due to high temperatures and lack of humidity. At the end of the field experiment, seeds were collected, tested for viability and incubated in the lab under optimal conditions for germination. Viability was high for all treatments (93–98%) indicating that seeds were not affected by the very high temperatures (up to 55
°C) measured in the field. Seeds that had been buried between shrubs showed the highest rate of germination in the lab (56%); germination of seeds buried under shrub cover was relatively low (18%); and seeds that had remained in the litter layer showed poor germination (<3%). These results may be related to disruption of dormancy owing to different temperature regimes among treatments. Exogenous dormancy due to the presence of glumes seems to be the main dormancy mechanism in this species.</description><identifier>ISSN: 0140-1963</identifier><identifier>EISSN: 1095-922X</identifier><identifier>DOI: 10.1016/j.jaridenv.2006.07.005</identifier><identifier>CODEN: JAENDR</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>air temperature ; Animal and plant ecology ; Animal, plant and microbial ecology ; arid lands ; Autoecology ; Biological and medical sciences ; buried seeds ; Caldenal ; Dormancy ; Fundamental and applied biological sciences. Psychology ; Grass ; grasses ; grasslands ; invasive species ; Piptochaetium ; Piptochaetium napostaense ; Plants and fungi ; seed dormancy ; seed germination ; seeds ; Semi-arid grassland ; Shrub effects ; shrubs ; temporal variation ; viability</subject><ispartof>Journal of arid environments, 2007-03, Vol.68 (4), p.509-521</ispartof><rights>2006 Elsevier Ltd</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c397t-cab9ad6c5ee6a6c3571504200c747800bb71b3784d1c72b537095794456872783</citedby><cites>FETCH-LOGICAL-c397t-cab9ad6c5ee6a6c3571504200c747800bb71b3784d1c72b537095794456872783</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jaridenv.2006.07.005$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18402271$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Mayor, M.D.</creatorcontrib><creatorcontrib>Bóo, R.M.</creatorcontrib><creatorcontrib>Peláez, D.V.</creatorcontrib><creatorcontrib>Elía, O.R.</creatorcontrib><creatorcontrib>Tomás, M.A.</creatorcontrib><title>Influence of shrub cover on germination, dormancy and viability of buried and unburied seeds of Piptochaetium napostaense (Speg.) Hackel</title><title>Journal of arid environments</title><description>In the semi-arid rangelands of central Argentina, heavy continuous grazing has produced shrub encroachment and a decrease in the abundance of valuable perennial grasses. The objective of this work was to study the effect of shrub cover on germination, dormancy and viability of buried and unburied seeds of
Piptochaetium napostaense, a native perennial grass abundant in the pastures and highly preferred by grazing animals. Field germination of seeds was rare, especially on the soil surface, probably due to high temperatures and lack of humidity. At the end of the field experiment, seeds were collected, tested for viability and incubated in the lab under optimal conditions for germination. Viability was high for all treatments (93–98%) indicating that seeds were not affected by the very high temperatures (up to 55
°C) measured in the field. Seeds that had been buried between shrubs showed the highest rate of germination in the lab (56%); germination of seeds buried under shrub cover was relatively low (18%); and seeds that had remained in the litter layer showed poor germination (<3%). These results may be related to disruption of dormancy owing to different temperature regimes among treatments. Exogenous dormancy due to the presence of glumes seems to be the main dormancy mechanism in this species.</description><subject>air temperature</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>arid lands</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>buried seeds</subject><subject>Caldenal</subject><subject>Dormancy</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Grass</subject><subject>grasses</subject><subject>grasslands</subject><subject>invasive species</subject><subject>Piptochaetium</subject><subject>Piptochaetium napostaense</subject><subject>Plants and fungi</subject><subject>seed dormancy</subject><subject>seed germination</subject><subject>seeds</subject><subject>Semi-arid grassland</subject><subject>Shrub effects</subject><subject>shrubs</subject><subject>temporal variation</subject><subject>viability</subject><issn>0140-1963</issn><issn>1095-922X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkcFu1DAQhiMEEkvhFcAXUJFIGCdxnNyoKqCVKoFUKnGzJs5k6yWxg52stG_AY9dhF3HsybL9_Z7xN0nymkPGgVcfd9kOvenI7rMcoMpAZgDiSbLh0Ii0yfOfT5MN8BJS3lTF8-RFCDsAzoUoNsmfa9sPC1lNzPUs3PulZdrtyTNn2Zb8aCzOxtkPrHN-RKsPDG3H9gZbM5j5sKbaxRvq_p4v9rQJRF1YL7-baXb6Hmk2y8gsTi7MSDYQO7-daJu9Z1eof9HwMnnW4xDo1Wk9S-6-fP5xeZXefPt6fXlxk-qikXOqsW2wq7QgqrDShZBcQBn_rWUpa4C2lbwtZF12XMu8FYWMEmRTlqKqZS7r4ix5d3x38u73QmFWowmahgEtuSUo3oioBiCC1RHU3oXgqVeTNyP6g-KgVvFqp_6JV6t4BVJF8TH49lQBg8ah99GaCf_TdQl5Lnnk3hy5Hp3CrY_M3W0OvIiz4bKp1xY-HQmKQvaGvArarLPqjCc9q86Zx5p5AIzvppY</recordid><startdate>20070301</startdate><enddate>20070301</enddate><creator>Mayor, M.D.</creator><creator>Bóo, R.M.</creator><creator>Peláez, D.V.</creator><creator>Elía, O.R.</creator><creator>Tomás, M.A.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7ST</scope><scope>7U6</scope><scope>C1K</scope></search><sort><creationdate>20070301</creationdate><title>Influence of shrub cover on germination, dormancy and viability of buried and unburied seeds of Piptochaetium napostaense (Speg.) Hackel</title><author>Mayor, M.D. ; Bóo, R.M. ; Peláez, D.V. ; Elía, O.R. ; Tomás, M.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c397t-cab9ad6c5ee6a6c3571504200c747800bb71b3784d1c72b537095794456872783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>air temperature</topic><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>arid lands</topic><topic>Autoecology</topic><topic>Biological and medical sciences</topic><topic>buried seeds</topic><topic>Caldenal</topic><topic>Dormancy</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Grass</topic><topic>grasses</topic><topic>grasslands</topic><topic>invasive species</topic><topic>Piptochaetium</topic><topic>Piptochaetium napostaense</topic><topic>Plants and fungi</topic><topic>seed dormancy</topic><topic>seed germination</topic><topic>seeds</topic><topic>Semi-arid grassland</topic><topic>Shrub effects</topic><topic>shrubs</topic><topic>temporal variation</topic><topic>viability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mayor, M.D.</creatorcontrib><creatorcontrib>Bóo, R.M.</creatorcontrib><creatorcontrib>Peláez, D.V.</creatorcontrib><creatorcontrib>Elía, O.R.</creatorcontrib><creatorcontrib>Tomás, M.A.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Journal of arid environments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mayor, M.D.</au><au>Bóo, R.M.</au><au>Peláez, D.V.</au><au>Elía, O.R.</au><au>Tomás, M.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of shrub cover on germination, dormancy and viability of buried and unburied seeds of Piptochaetium napostaense (Speg.) Hackel</atitle><jtitle>Journal of arid environments</jtitle><date>2007-03-01</date><risdate>2007</risdate><volume>68</volume><issue>4</issue><spage>509</spage><epage>521</epage><pages>509-521</pages><issn>0140-1963</issn><eissn>1095-922X</eissn><coden>JAENDR</coden><abstract>In the semi-arid rangelands of central Argentina, heavy continuous grazing has produced shrub encroachment and a decrease in the abundance of valuable perennial grasses. The objective of this work was to study the effect of shrub cover on germination, dormancy and viability of buried and unburied seeds of
Piptochaetium napostaense, a native perennial grass abundant in the pastures and highly preferred by grazing animals. Field germination of seeds was rare, especially on the soil surface, probably due to high temperatures and lack of humidity. At the end of the field experiment, seeds were collected, tested for viability and incubated in the lab under optimal conditions for germination. Viability was high for all treatments (93–98%) indicating that seeds were not affected by the very high temperatures (up to 55
°C) measured in the field. Seeds that had been buried between shrubs showed the highest rate of germination in the lab (56%); germination of seeds buried under shrub cover was relatively low (18%); and seeds that had remained in the litter layer showed poor germination (<3%). These results may be related to disruption of dormancy owing to different temperature regimes among treatments. Exogenous dormancy due to the presence of glumes seems to be the main dormancy mechanism in this species.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.jaridenv.2006.07.005</doi><tpages>13</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0140-1963 |
| ispartof | Journal of arid environments, 2007-03, Vol.68 (4), p.509-521 |
| issn | 0140-1963 1095-922X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_19511500 |
| source | Elsevier ScienceDirect Journals Complete |
| subjects | air temperature Animal and plant ecology Animal, plant and microbial ecology arid lands Autoecology Biological and medical sciences buried seeds Caldenal Dormancy Fundamental and applied biological sciences. Psychology Grass grasses grasslands invasive species Piptochaetium Piptochaetium napostaense Plants and fungi seed dormancy seed germination seeds Semi-arid grassland Shrub effects shrubs temporal variation viability |
| title | Influence of shrub cover on germination, dormancy and viability of buried and unburied seeds of Piptochaetium napostaense (Speg.) Hackel |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-05T07%3A07%3A28IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Influence%20of%20shrub%20cover%20on%20germination,%20dormancy%20and%20viability%20of%20buried%20and%20unburied%20seeds%20of%20Piptochaetium%20napostaense%20(Speg.)%20Hackel&rft.jtitle=Journal%20of%20arid%20environments&rft.au=Mayor,%20M.D.&rft.date=2007-03-01&rft.volume=68&rft.issue=4&rft.spage=509&rft.epage=521&rft.pages=509-521&rft.issn=0140-1963&rft.eissn=1095-922X&rft.coden=JAENDR&rft_id=info:doi/10.1016/j.jaridenv.2006.07.005&rft_dat=%3Cproquest_cross%3E19511500%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=19511500&rft_id=info:pmid/&rft_els_id=S0140196306002369&rfr_iscdi=true |