Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone
Reinstating dominant Triodia grassland communities following disturbance has been a focus of arid land restoration practitioners for decades in Australia. Yet, seed quality and variable seed germination have seriously hindered the reestablishment potential of Triodia species to date. This study set...
Gespeichert in:
| Veröffentlicht in: | Restoration ecology 2016-08, Vol.24 (S2), p.S64-S76 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | S76 |
|---|---|
| container_issue | S2 |
| container_start_page | S64 |
| container_title | Restoration ecology |
| container_volume | 24 |
| creator | Erickson, Todd E. Shackelford, Nancy Dixon, Kingsley W. Turner, Shane R. Merritt, David J. |
| description | Reinstating dominant Triodia grassland communities following disturbance has been a focus of arid land restoration practitioners for decades in Australia. Yet, seed quality and variable seed germination have seriously hindered the reestablishment potential of Triodia species to date. This study set out to examine diaspore quality, germination requirements, and seed dormancy in seven Triodia species to identify first, then resolve, germination impediments. Freshly collected florets from all species were cleaned to ensure that each floret contained a viable seed and then evaluated for their initial germination capacity. Very low germination from florets ( |
| doi_str_mv | 10.1111/rec.12357 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1819143586</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>4162771641</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4037-1fe0395968071509ec3711ed63e8902821850076c506e8037dbe8f55a50f62a33</originalsourceid><addsrcrecordid>eNp1kMtO5DAQRSMEEs_F_IElNrAIuOL2azlqMYBAgEYMzM4yTqUxJHGPnQaar8dNA4uRqE3V4pzS1S2KH0APIM9hRHcAFeNypdgAXokSKP27mm8qoKy0hPViM6UHSoErxTaKyeUTRhc630_I9H6efGjDxDvbkjrEzvZuTnxPEmKdSGjIdfSh9pbsXQXr0OI-GQLx3TSGJyQR0xCiHXzoF9Jwj8RGX5PX0ON2sdbYNuHOx94q_vw6uh6flOeXx6fjn-elG1EmS2iQMs21UFQCpxodkwBYC4ZK00pVoDilUjhOBaps1HeoGs4tp42oLGNbxd7yb470b5YDmc4nh21rewyzZECBhhHjSmR09z_0Icxin9MtqBHnWmuVqf0l5WJIKWJjptF3Ns4NULOo3OTKzXvlmT1css--xfn3oPl9NP40yqXh04AvX4aNj0ZIJrm5vTg2ozN5czK-4oazN9gLkAI</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1814559998</pqid></control><display><type>article</type><title>Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone</title><source>Wiley Online Library Journals Frontfile Complete</source><creator>Erickson, Todd E. ; Shackelford, Nancy ; Dixon, Kingsley W. ; Turner, Shane R. ; Merritt, David J.</creator><creatorcontrib>Erickson, Todd E. ; Shackelford, Nancy ; Dixon, Kingsley W. ; Turner, Shane R. ; Merritt, David J.</creatorcontrib><description>Reinstating dominant Triodia grassland communities following disturbance has been a focus of arid land restoration practitioners for decades in Australia. Yet, seed quality and variable seed germination have seriously hindered the reestablishment potential of Triodia species to date. This study set out to examine diaspore quality, germination requirements, and seed dormancy in seven Triodia species to identify first, then resolve, germination impediments. Freshly collected florets from all species were cleaned to ensure that each floret contained a viable seed and then evaluated for their initial germination capacity. Very low germination from florets (<10%) indicated the presence of physiological seed dormancy (PD) in all species. However, germination was significantly improved (up to 57%) with the use of 0.67 µm karrikinolide (KAR1), and to a lesser degree with 289 µm gibberellic acid (GA3). When the covering floret structures (i.e. lemma and palea) were removed, germination increased up to 59%, which was further enhanced after exposure to GA3 (up to 66%) and KAR1 (up to 92%). Optimal germination temperatures varied from 20 to 35°C and were species specific. Dry after‐ripening (DAR −30°C and 50% relative humidity [RH]) of florets and seeds promoted the progressive loss of PD over 12–24 months storage for most species. Germination, dormancy level, and response to incubation temperature differed amongst species, experimental units (florets and seeds), DAR treatments, and after exposure to germination stimulants (GA3 and KAR1). For use in restoration seeding programs, careful consideration of seed pre‐treatments is necessary to improve germination in Triodia species.</description><identifier>ISSN: 1061-2971</identifier><identifier>EISSN: 1526-100X</identifier><identifier>DOI: 10.1111/rec.12357</identifier><language>eng</language><publisher>Malden, USA: Wiley Periodicals, Inc</publisher><subject>Arid zones ; dry after-ripening ; dryland ; Environmental restoration ; Germination ; Grasslands ; karrikinolide ; Palea ; perennial grass ; Pilbara ; Poaceae ; seed storage ; Seeds</subject><ispartof>Restoration ecology, 2016-08, Vol.24 (S2), p.S64-S76</ispartof><rights>2016 Society for Ecological Restoration</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4037-1fe0395968071509ec3711ed63e8902821850076c506e8037dbe8f55a50f62a33</citedby><cites>FETCH-LOGICAL-c4037-1fe0395968071509ec3711ed63e8902821850076c506e8037dbe8f55a50f62a33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Frec.12357$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Frec.12357$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Erickson, Todd E.</creatorcontrib><creatorcontrib>Shackelford, Nancy</creatorcontrib><creatorcontrib>Dixon, Kingsley W.</creatorcontrib><creatorcontrib>Turner, Shane R.</creatorcontrib><creatorcontrib>Merritt, David J.</creatorcontrib><title>Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone</title><title>Restoration ecology</title><addtitle>Restor Ecol</addtitle><description>Reinstating dominant Triodia grassland communities following disturbance has been a focus of arid land restoration practitioners for decades in Australia. Yet, seed quality and variable seed germination have seriously hindered the reestablishment potential of Triodia species to date. This study set out to examine diaspore quality, germination requirements, and seed dormancy in seven Triodia species to identify first, then resolve, germination impediments. Freshly collected florets from all species were cleaned to ensure that each floret contained a viable seed and then evaluated for their initial germination capacity. Very low germination from florets (<10%) indicated the presence of physiological seed dormancy (PD) in all species. However, germination was significantly improved (up to 57%) with the use of 0.67 µm karrikinolide (KAR1), and to a lesser degree with 289 µm gibberellic acid (GA3). When the covering floret structures (i.e. lemma and palea) were removed, germination increased up to 59%, which was further enhanced after exposure to GA3 (up to 66%) and KAR1 (up to 92%). Optimal germination temperatures varied from 20 to 35°C and were species specific. Dry after‐ripening (DAR −30°C and 50% relative humidity [RH]) of florets and seeds promoted the progressive loss of PD over 12–24 months storage for most species. Germination, dormancy level, and response to incubation temperature differed amongst species, experimental units (florets and seeds), DAR treatments, and after exposure to germination stimulants (GA3 and KAR1). For use in restoration seeding programs, careful consideration of seed pre‐treatments is necessary to improve germination in Triodia species.</description><subject>Arid zones</subject><subject>dry after-ripening</subject><subject>dryland</subject><subject>Environmental restoration</subject><subject>Germination</subject><subject>Grasslands</subject><subject>karrikinolide</subject><subject>Palea</subject><subject>perennial grass</subject><subject>Pilbara</subject><subject>Poaceae</subject><subject>seed storage</subject><subject>Seeds</subject><issn>1061-2971</issn><issn>1526-100X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp1kMtO5DAQRSMEEs_F_IElNrAIuOL2azlqMYBAgEYMzM4yTqUxJHGPnQaar8dNA4uRqE3V4pzS1S2KH0APIM9hRHcAFeNypdgAXokSKP27mm8qoKy0hPViM6UHSoErxTaKyeUTRhc630_I9H6efGjDxDvbkjrEzvZuTnxPEmKdSGjIdfSh9pbsXQXr0OI-GQLx3TSGJyQR0xCiHXzoF9Jwj8RGX5PX0ON2sdbYNuHOx94q_vw6uh6flOeXx6fjn-elG1EmS2iQMs21UFQCpxodkwBYC4ZK00pVoDilUjhOBaps1HeoGs4tp42oLGNbxd7yb470b5YDmc4nh21rewyzZECBhhHjSmR09z_0Icxin9MtqBHnWmuVqf0l5WJIKWJjptF3Ns4NULOo3OTKzXvlmT1css--xfn3oPl9NP40yqXh04AvX4aNj0ZIJrm5vTg2ozN5czK-4oazN9gLkAI</recordid><startdate>201608</startdate><enddate>201608</enddate><creator>Erickson, Todd E.</creator><creator>Shackelford, Nancy</creator><creator>Dixon, Kingsley W.</creator><creator>Turner, Shane R.</creator><creator>Merritt, David J.</creator><general>Wiley Periodicals, Inc</general><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7ST</scope><scope>7U6</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>201608</creationdate><title>Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone</title><author>Erickson, Todd E. ; Shackelford, Nancy ; Dixon, Kingsley W. ; Turner, Shane R. ; Merritt, David J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4037-1fe0395968071509ec3711ed63e8902821850076c506e8037dbe8f55a50f62a33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Arid zones</topic><topic>dry after-ripening</topic><topic>dryland</topic><topic>Environmental restoration</topic><topic>Germination</topic><topic>Grasslands</topic><topic>karrikinolide</topic><topic>Palea</topic><topic>perennial grass</topic><topic>Pilbara</topic><topic>Poaceae</topic><topic>seed storage</topic><topic>Seeds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Erickson, Todd E.</creatorcontrib><creatorcontrib>Shackelford, Nancy</creatorcontrib><creatorcontrib>Dixon, Kingsley W.</creatorcontrib><creatorcontrib>Turner, Shane R.</creatorcontrib><creatorcontrib>Merritt, David J.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Restoration ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Erickson, Todd E.</au><au>Shackelford, Nancy</au><au>Dixon, Kingsley W.</au><au>Turner, Shane R.</au><au>Merritt, David J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone</atitle><jtitle>Restoration ecology</jtitle><addtitle>Restor Ecol</addtitle><date>2016-08</date><risdate>2016</risdate><volume>24</volume><issue>S2</issue><spage>S64</spage><epage>S76</epage><pages>S64-S76</pages><issn>1061-2971</issn><eissn>1526-100X</eissn><abstract>Reinstating dominant Triodia grassland communities following disturbance has been a focus of arid land restoration practitioners for decades in Australia. Yet, seed quality and variable seed germination have seriously hindered the reestablishment potential of Triodia species to date. This study set out to examine diaspore quality, germination requirements, and seed dormancy in seven Triodia species to identify first, then resolve, germination impediments. Freshly collected florets from all species were cleaned to ensure that each floret contained a viable seed and then evaluated for their initial germination capacity. Very low germination from florets (<10%) indicated the presence of physiological seed dormancy (PD) in all species. However, germination was significantly improved (up to 57%) with the use of 0.67 µm karrikinolide (KAR1), and to a lesser degree with 289 µm gibberellic acid (GA3). When the covering floret structures (i.e. lemma and palea) were removed, germination increased up to 59%, which was further enhanced after exposure to GA3 (up to 66%) and KAR1 (up to 92%). Optimal germination temperatures varied from 20 to 35°C and were species specific. Dry after‐ripening (DAR −30°C and 50% relative humidity [RH]) of florets and seeds promoted the progressive loss of PD over 12–24 months storage for most species. Germination, dormancy level, and response to incubation temperature differed amongst species, experimental units (florets and seeds), DAR treatments, and after exposure to germination stimulants (GA3 and KAR1). For use in restoration seeding programs, careful consideration of seed pre‐treatments is necessary to improve germination in Triodia species.</abstract><cop>Malden, USA</cop><pub>Wiley Periodicals, Inc</pub><doi>10.1111/rec.12357</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1061-2971 |
| ispartof | Restoration ecology, 2016-08, Vol.24 (S2), p.S64-S76 |
| issn | 1061-2971 1526-100X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1819143586 |
| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Arid zones dry after-ripening dryland Environmental restoration Germination Grasslands karrikinolide Palea perennial grass Pilbara Poaceae seed storage Seeds |
| title | Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-15T04%3A18%3A39IST&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=Overcoming%20physiological%20dormancy%20in%20seeds%20of%20Triodia%20(Poaceae)%20to%20improve%20restoration%20in%20the%20arid%20zone&rft.jtitle=Restoration%20ecology&rft.au=Erickson,%20Todd%20E.&rft.date=2016-08&rft.volume=24&rft.issue=S2&rft.spage=S64&rft.epage=S76&rft.pages=S64-S76&rft.issn=1061-2971&rft.eissn=1526-100X&rft_id=info:doi/10.1111/rec.12357&rft_dat=%3Cproquest_cross%3E4162771641%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=1814559998&rft_id=info:pmid/&rfr_iscdi=true |