Quantification of two-year-old hybrid poplar root systems: morphology, biomass, and (14)C distribution.
Identifieur interne : 004C44 ( Main/Exploration ); précédent : 004C43; suivant : 004C45Quantification of two-year-old hybrid poplar root systems: morphology, biomass, and (14)C distribution.
Auteurs : A L Friend [États-Unis] ; G. Scarascia-Mugnozza ; J G Isebrands ; P E HeilmanSource :
- Tree physiology [ 1758-4469 ] ; 1991.
Abstract
Root morphology, biomass, and (14)C distribution were studied in two 2-year-old Populus trichocarpa x P. deltoides hybrids, which originated from hardwood cuttings, to determine the pattern of root distribution in a plantation and to refine methods for root recovery. The trees were labeled with (14)CO(2) and harvested after a 72-hour chase period. Roots attached to each labeled tree were analyzed for morphological traits at the time of harvest. Detached roots from within a 1-m(3) volume of soil surrounding each tree were separated from the soil and sorted on the basis of rooting depth and root diameter. Lateral roots > 2 mm in diameter had a largely horizontal orientation at their point of origin from the cutting and extended horizontally up to 4 m from the cutting. This resulted in considerable overlap of root systems in the plantation. Results from (14)C labeling indicated that 24 +/- 4% (+/- SD) of the carbon exported from branches-labeled within two weeks after branch budset-was translocated to the root system. Dilution of the root (14)C label indicated that from 0 (> 5 mm diameter roots) to 75% (< 2 mm diameter roots) of the roots recovered from within the 1-m(3) volume of soil surrounding a harvested tree originated from other trees. Total root biomass was 6 +/- 1 Mg ha(-1) for both hybrids. Sixty percent of the root biomass was recovered directly from excavation, 16% from coarse-sieving excavated soil, and 24% from re-sorting sieved soil. The study indicated that root growth of hybrid poplars may be rapid and extensive and that detailed sorting of soil subsamples substantially improves the recovery of fine roots < 2 mm in diameter.
DOI: 10.1093/treephys/8.2.109
PubMed: 14972883
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Scarascia-Mugnozza</name></author><author><name sortKey="Isebrands, J G" sort="Isebrands, J G" uniqKey="Isebrands J" first="J G" last="Isebrands">J G Isebrands</name></author><author><name sortKey="Heilman, P E" sort="Heilman, P E" uniqKey="Heilman P" first="P E" last="Heilman">P E Heilman</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1991">1991</date><idno type="RBID">pubmed:14972883</idno><idno type="pmid">14972883</idno><idno type="doi">10.1093/treephys/8.2.109</idno><idno type="wicri:Area/Main/Corpus">004C62</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">004C62</idno><idno type="wicri:Area/Main/Curation">004C62</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">004C62</idno><idno type="wicri:Area/Main/Exploration">004C62</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Quantification of two-year-old hybrid poplar root systems: morphology, biomass, and (14)C distribution.</title><author><name sortKey="Friend, A L" sort="Friend, A L" uniqKey="Friend A" first="A L" last="Friend">A L Friend</name><affiliation wicri:level="2"><nlm:affiliation>Department of Forestry, Mississippi State University, Mississippi State, MS 39762, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Forestry, Mississippi State University, Mississippi State, MS 39762</wicri:regionArea><placeName><region type="state">État du Mississippi</region></placeName></affiliation></author><author><name sortKey="Scarascia Mugnozza, G" sort="Scarascia Mugnozza, G" uniqKey="Scarascia Mugnozza G" first="G" last="Scarascia-Mugnozza">G. Scarascia-Mugnozza</name></author><author><name sortKey="Isebrands, J G" sort="Isebrands, J G" uniqKey="Isebrands J" first="J G" last="Isebrands">J G Isebrands</name></author><author><name sortKey="Heilman, P E" sort="Heilman, P E" uniqKey="Heilman P" first="P E" last="Heilman">P E Heilman</name></author></analytic><series><title level="j">Tree physiology</title><idno type="eISSN">1758-4469</idno><imprint><date when="1991" type="published">1991</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Root morphology, biomass, and (14)C distribution were studied in two 2-year-old Populus trichocarpa x P. deltoides hybrids, which originated from hardwood cuttings, to determine the pattern of root distribution in a plantation and to refine methods for root recovery. The trees were labeled with (14)CO(2) and harvested after a 72-hour chase period. Roots attached to each labeled tree were analyzed for morphological traits at the time of harvest. Detached roots from within a 1-m(3) volume of soil surrounding each tree were separated from the soil and sorted on the basis of rooting depth and root diameter. Lateral roots > 2 mm in diameter had a largely horizontal orientation at their point of origin from the cutting and extended horizontally up to 4 m from the cutting. This resulted in considerable overlap of root systems in the plantation. Results from (14)C labeling indicated that 24 +/- 4% (+/- SD) of the carbon exported from branches-labeled within two weeks after branch budset-was translocated to the root system. Dilution of the root (14)C label indicated that from 0 (> 5 mm diameter roots) to 75% (< 2 mm diameter roots) of the roots recovered from within the 1-m(3) volume of soil surrounding a harvested tree originated from other trees. Total root biomass was 6 +/- 1 Mg ha(-1) for both hybrids. Sixty percent of the root biomass was recovered directly from excavation, 16% from coarse-sieving excavated soil, and 24% from re-sorting sieved soil. The study indicated that root growth of hybrid poplars may be rapid and extensive and that detailed sorting of soil subsamples substantially improves the recovery of fine roots < 2 mm in diameter.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">14972883</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>8</Volume><Issue>2</Issue><PubDate><Year>1991</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Quantification of two-year-old hybrid poplar root systems: morphology, biomass, and (14)C distribution.</ArticleTitle><Pagination><MedlinePgn>109-19</MedlinePgn></Pagination><Abstract><AbstractText>Root morphology, biomass, and (14)C distribution were studied in two 2-year-old Populus trichocarpa x P. deltoides hybrids, which originated from hardwood cuttings, to determine the pattern of root distribution in a plantation and to refine methods for root recovery. The trees were labeled with (14)CO(2) and harvested after a 72-hour chase period. Roots attached to each labeled tree were analyzed for morphological traits at the time of harvest. Detached roots from within a 1-m(3) volume of soil surrounding each tree were separated from the soil and sorted on the basis of rooting depth and root diameter. Lateral roots > 2 mm in diameter had a largely horizontal orientation at their point of origin from the cutting and extended horizontally up to 4 m from the cutting. This resulted in considerable overlap of root systems in the plantation. Results from (14)C labeling indicated that 24 +/- 4% (+/- SD) of the carbon exported from branches-labeled within two weeks after branch budset-was translocated to the root system. Dilution of the root (14)C label indicated that from 0 (> 5 mm diameter roots) to 75% (< 2 mm diameter roots) of the roots recovered from within the 1-m(3) volume of soil surrounding a harvested tree originated from other trees. Total root biomass was 6 +/- 1 Mg ha(-1) for both hybrids. Sixty percent of the root biomass was recovered directly from excavation, 16% from coarse-sieving excavated soil, and 24% from re-sorting sieved soil. The study indicated that root growth of hybrid poplars may be rapid and extensive and that detailed sorting of soil subsamples substantially improves the recovery of fine roots < 2 mm in diameter.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Friend</LastName><ForeName>A L</ForeName><Initials>AL</Initials><AffiliationInfo><Affiliation>Department of Forestry, Mississippi State University, Mississippi State, MS 39762, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Scarascia-Mugnozza</LastName><ForeName>G</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Isebrands</LastName><ForeName>J G</ForeName><Initials>JG</Initials></Author><Author ValidYN="Y"><LastName>Heilman</LastName><ForeName>P E</ForeName><Initials>PE</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1991</Year><Month>3</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1991</Year><Month>3</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1991</Year><Month>3</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">14972883</ArticleId><ArticleId IdType="doi">10.1093/treephys/8.2.109</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>État du Mississippi</li></region></list><tree><noCountry><name sortKey="Heilman, P E" sort="Heilman, P E" uniqKey="Heilman P" first="P E" last="Heilman">P E Heilman</name><name sortKey="Isebrands, J G" sort="Isebrands, J G" uniqKey="Isebrands J" first="J G" last="Isebrands">J G Isebrands</name><name sortKey="Scarascia Mugnozza, G" sort="Scarascia Mugnozza, G" uniqKey="Scarascia Mugnozza G" first="G" last="Scarascia-Mugnozza">G. Scarascia-Mugnozza</name></noCountry><country name="États-Unis"><region name="État du Mississippi"><name sortKey="Friend, A L" sort="Friend, A L" uniqKey="Friend A" first="A L" last="Friend">A L Friend</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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