Reproductive characteristics of a Populus euphratica population and prospects for its restoration in China.
Identifieur interne : 002927 ( Main/Exploration ); précédent : 002926; suivant : 002928Reproductive characteristics of a Populus euphratica population and prospects for its restoration in China.
Auteurs : Dechang Cao [République populaire de Chine] ; Jingwen Li ; Zhenying Huang ; Carol C. Baskin ; Jerry M. Baskin ; Peng Hao ; Weilei Zhou ; Junqing LiSource :
- PloS one [ 1932-6203 ] ; 2012.
Descripteurs français
- KwdFr :
- MESH :
- physiologie : Arbres, Germination, Graines, Populus, Racines de plante, Reproduction.
- Chine.
- Wicri :
- geographic : République populaire de Chine.
English descriptors
- KwdEn :
- MESH :
- geographic : China.
- physiology : Germination, Plant Roots, Populus, Reproduction, Seeds, Trees.
Abstract
Populus euphratica is a dominant tree in riparian ecosystems in arid areas of northwest China, but it fails to regenerate in these systems. This study evaluates causes for the failure of sexual and asexual regeneration of this species in the wild. P. euphratica disperses as many as 85743 seeds/m(2) during summer, and the seeds germinate to 92.0% in distilled water and to 60.8% on silt. However, very few seeds (3.6%) can germinate on unflooded soil. The seed-rain season is prolonged by temporal variability in seed dispersal among individuals, which ensures that seedling emergence can occur during favorable conditions (i.e., floods and rainfall). As a result of water shortage and river channeling due to water usage and altered river flows, there are no safe sites on river banks for seed germination, which has led to the failure of P. euphratica to regenerate from seed. Root suckers of P. euphratica were present in 86% of the forest gaps investigated. However, extensive grazing has destroyed many of them and thus has reduced this form of regeneration. This research suggests that human activities are resulting in the failure of P. euphratica to regenerate. Changes in land management such as reduced use of concrete canals in Populus forests and/or reduced sheep grazing in these areas may promote their regeneration.
DOI: 10.1371/journal.pone.0039121
PubMed: 22848351
PubMed Central: PMC3406061
Affiliations:
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Baskin</name></author><author><name sortKey="Baskin, Jerry M" sort="Baskin, Jerry M" uniqKey="Baskin J" first="Jerry M" last="Baskin">Jerry M. 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Baskin</name></author><author><name sortKey="Baskin, Jerry M" sort="Baskin, Jerry M" uniqKey="Baskin J" first="Jerry M" last="Baskin">Jerry M. Baskin</name></author><author><name sortKey="Hao, Peng" sort="Hao, Peng" uniqKey="Hao P" first="Peng" last="Hao">Peng Hao</name></author><author><name sortKey="Zhou, Weilei" sort="Zhou, Weilei" uniqKey="Zhou W" first="Weilei" last="Zhou">Weilei Zhou</name></author><author><name sortKey="Li, Junqing" sort="Li, Junqing" uniqKey="Li J" first="Junqing" last="Li">Junqing Li</name></author></analytic><series><title level="j">PloS one</title><idno type="eISSN">1932-6203</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>China (MeSH)</term><term>Germination (physiology)</term><term>Plant Roots (physiology)</term><term>Populus (physiology)</term><term>Reproduction (physiology)</term><term>Seeds (physiology)</term><term>Trees (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Arbres (physiologie)</term><term>Chine (MeSH)</term><term>Germination (physiologie)</term><term>Graines (physiologie)</term><term>Populus (physiologie)</term><term>Racines de plante (physiologie)</term><term>Reproduction (physiologie)</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>China</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Arbres</term><term>Germination</term><term>Graines</term><term>Populus</term><term>Racines de plante</term><term>Reproduction</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Germination</term><term>Plant Roots</term><term>Populus</term><term>Reproduction</term><term>Seeds</term><term>Trees</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Chine</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>République populaire de Chine</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Populus euphratica is a dominant tree in riparian ecosystems in arid areas of northwest China, but it fails to regenerate in these systems. This study evaluates causes for the failure of sexual and asexual regeneration of this species in the wild. P. euphratica disperses as many as 85743 seeds/m(2) during summer, and the seeds germinate to 92.0% in distilled water and to 60.8% on silt. However, very few seeds (3.6%) can germinate on unflooded soil. The seed-rain season is prolonged by temporal variability in seed dispersal among individuals, which ensures that seedling emergence can occur during favorable conditions (i.e., floods and rainfall). As a result of water shortage and river channeling due to water usage and altered river flows, there are no safe sites on river banks for seed germination, which has led to the failure of P. euphratica to regenerate from seed. Root suckers of P. euphratica were present in 86% of the forest gaps investigated. However, extensive grazing has destroyed many of them and thus has reduced this form of regeneration. This research suggests that human activities are resulting in the failure of P. euphratica to regenerate. Changes in land management such as reduced use of concrete canals in Populus forests and/or reduced sheep grazing in these areas may promote their regeneration.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">22848351</PMID><DateCompleted><Year>2013</Year><Month>04</Month><Day>02</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1932-6203</ISSN><JournalIssue CitedMedium="Internet"><Volume>7</Volume><Issue>7</Issue><PubDate><Year>2012</Year></PubDate></JournalIssue><Title>PloS one</Title><ISOAbbreviation>PLoS One</ISOAbbreviation></Journal><ArticleTitle>Reproductive characteristics of a Populus euphratica population and prospects for its restoration in China.</ArticleTitle><Pagination><MedlinePgn>e39121</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0039121</ELocationID><Abstract><AbstractText>Populus euphratica is a dominant tree in riparian ecosystems in arid areas of northwest China, but it fails to regenerate in these systems. This study evaluates causes for the failure of sexual and asexual regeneration of this species in the wild. P. euphratica disperses as many as 85743 seeds/m(2) during summer, and the seeds germinate to 92.0% in distilled water and to 60.8% on silt. However, very few seeds (3.6%) can germinate on unflooded soil. The seed-rain season is prolonged by temporal variability in seed dispersal among individuals, which ensures that seedling emergence can occur during favorable conditions (i.e., floods and rainfall). As a result of water shortage and river channeling due to water usage and altered river flows, there are no safe sites on river banks for seed germination, which has led to the failure of P. euphratica to regenerate from seed. Root suckers of P. euphratica were present in 86% of the forest gaps investigated. However, extensive grazing has destroyed many of them and thus has reduced this form of regeneration. This research suggests that human activities are resulting in the failure of P. euphratica to regenerate. Changes in land management such as reduced use of concrete canals in Populus forests and/or reduced sheep grazing in these areas may promote their regeneration.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Cao</LastName><ForeName>Dechang</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Jingwen</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Huang</LastName><ForeName>Zhenying</ForeName><Initials>Z</Initials></Author><Author ValidYN="Y"><LastName>Baskin</LastName><ForeName>Carol C</ForeName><Initials>CC</Initials></Author><Author ValidYN="Y"><LastName>Baskin</LastName><ForeName>Jerry M</ForeName><Initials>JM</Initials></Author><Author ValidYN="Y"><LastName>Hao</LastName><ForeName>Peng</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Zhou</LastName><ForeName>Weilei</ForeName><Initials>W</Initials></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Junqing</ForeName><Initials>J</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>07</Month><Day>26</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>PLoS One</MedlineTA><NlmUniqueID>101285081</NlmUniqueID><ISSNLinking>1932-6203</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002681" MajorTopicYN="N" Type="Geographic">China</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018525" MajorTopicYN="N">Germination</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012098" MajorTopicYN="N">Reproduction</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012639" MajorTopicYN="N">Seeds</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2011</Year><Month>09</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2012</Year><Month>05</Month><Day>17</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>8</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>8</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2013</Year><Month>4</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">22848351</ArticleId><ArticleId IdType="doi">10.1371/journal.pone.0039121</ArticleId><ArticleId IdType="pii">PONE-D-11-17764</ArticleId><ArticleId IdType="pmc">PMC3406061</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Proc Natl Acad Sci U S A. 2001 May 8;98(10):5433-40</Citation><ArticleIdList><ArticleId IdType="pubmed">11344290</ArticleId></ArticleIdList></Reference><Reference><Citation>J Integr Plant Biol. 2008 May;50(5):536-46</Citation><ArticleIdList><ArticleId IdType="pubmed">18713421</ArticleId></ArticleIdList></Reference><Reference><Citation>J Exp Bot. 2005 Aug;56(418):2003-10</Citation><ArticleIdList><ArticleId IdType="pubmed">15967780</ArticleId></ArticleIdList></Reference><Reference><Citation>Tree Physiol. 1994 May;14(5):455-66</Citation><ArticleIdList><ArticleId IdType="pubmed">14967682</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><noCountry><name sortKey="Baskin, Carol C" sort="Baskin, Carol C" uniqKey="Baskin C" first="Carol C" last="Baskin">Carol C. Baskin</name><name sortKey="Baskin, Jerry M" sort="Baskin, Jerry M" uniqKey="Baskin J" first="Jerry M" last="Baskin">Jerry M. Baskin</name><name sortKey="Hao, Peng" sort="Hao, Peng" uniqKey="Hao P" first="Peng" last="Hao">Peng Hao</name><name sortKey="Huang, Zhenying" sort="Huang, Zhenying" uniqKey="Huang Z" first="Zhenying" last="Huang">Zhenying Huang</name><name sortKey="Li, Jingwen" sort="Li, Jingwen" uniqKey="Li J" first="Jingwen" last="Li">Jingwen Li</name><name sortKey="Li, Junqing" sort="Li, Junqing" uniqKey="Li J" first="Junqing" last="Li">Junqing Li</name><name sortKey="Zhou, Weilei" sort="Zhou, Weilei" uniqKey="Zhou W" first="Weilei" last="Zhou">Weilei Zhou</name></noCountry><country name="République populaire de Chine"><noRegion><name sortKey="Cao, Dechang" sort="Cao, Dechang" uniqKey="Cao D" first="Dechang" last="Cao">Dechang Cao</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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