Studies of Frost Hardiness in Woody Plants. II. Effect of Temperature on Hardening.
Identifieur interne : 004F37 ( Main/Exploration ); précédent : 004F36; suivant : 004F38Studies of Frost Hardiness in Woody Plants. II. Effect of Temperature on Hardening.
Auteurs : A. Sakai [Japon]Source :
- Plant physiology [ 0032-0889 ] ; 1966.
Abstract
The effect of temperature on hardening was studied at temperatures ranging from 0 degrees to -20 degrees using twigs of willow and poplar. In October and in late April when the twigs are not very frost hardy, hardening at 0 degrees produced a considerable increase in their frost hardiness, although the effectiveness of hardening at 0 degrees decreased with a decrease in the environmental temperature. In twigs which could withstand continuous freezing without injury, hardening at -3 degrees to -5 degrees was most effective in increasing the frost hardiness of the twigs. Below -20 degrees , only negligible increase was observed either in frost hardiness or sugar content.The rate of starch to sugar conversion differed remarkably in different twig tissues. The starch in xylem was more slowly converted to sugar than that in the cortex. The optimum temperature for converting starch into sugar during frost hardening was also found to be -3 degrees to -5 degrees . In addition, the greater the effectiveness of the hardening treatment, the greater the rate of conversion from starch to sugar. The frost hardiness of a twig is closely related to the sugar content of the twig, especially in the xylem.
DOI: 10.1104/pp.41.2.353
PubMed: 16656262
PubMed Central: PMC1086345
Affiliations:
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Sakai</name><affiliation wicri:level="1"><nlm:affiliation>The Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>The Institute of Low Temperature Science, Hokkaido University, Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1966">1966</date><idno type="RBID">pubmed:16656262</idno><idno type="pmid">16656262</idno><idno type="pmc">PMC1086345</idno><idno type="doi">10.1104/pp.41.2.353</idno><idno type="wicri:Area/Main/Corpus">004F37</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">004F37</idno><idno type="wicri:Area/Main/Curation">004F37</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">004F37</idno><idno type="wicri:Area/Main/Exploration">004F37</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Studies of Frost Hardiness in Woody Plants. II. Effect of Temperature on Hardening.</title><author><name sortKey="Sakai, A" sort="Sakai, A" uniqKey="Sakai A" first="A" last="Sakai">A. Sakai</name><affiliation wicri:level="1"><nlm:affiliation>The Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>The Institute of Low Temperature Science, Hokkaido University, Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation></author></analytic><series><title level="j">Plant physiology</title><idno type="ISSN">0032-0889</idno><imprint><date when="1966" type="published">1966</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The effect of temperature on hardening was studied at temperatures ranging from 0 degrees to -20 degrees using twigs of willow and poplar. In October and in late April when the twigs are not very frost hardy, hardening at 0 degrees produced a considerable increase in their frost hardiness, although the effectiveness of hardening at 0 degrees decreased with a decrease in the environmental temperature. In twigs which could withstand continuous freezing without injury, hardening at -3 degrees to -5 degrees was most effective in increasing the frost hardiness of the twigs. Below -20 degrees , only negligible increase was observed either in frost hardiness or sugar content.The rate of starch to sugar conversion differed remarkably in different twig tissues. The starch in xylem was more slowly converted to sugar than that in the cortex. The optimum temperature for converting starch into sugar during frost hardening was also found to be -3 degrees to -5 degrees . In addition, the greater the effectiveness of the hardening treatment, the greater the rate of conversion from starch to sugar. The frost hardiness of a twig is closely related to the sugar content of the twig, especially in the xylem.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">16656262</PMID><DateCompleted><Year>2010</Year><Month>06</Month><Day>29</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>14</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0032-0889</ISSN><JournalIssue CitedMedium="Print"><Volume>41</Volume><Issue>2</Issue><PubDate><Year>1966</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Plant physiology</Title><ISOAbbreviation>Plant Physiol</ISOAbbreviation></Journal><ArticleTitle>Studies of Frost Hardiness in Woody Plants. II. Effect of Temperature on Hardening.</ArticleTitle><Pagination><MedlinePgn>353-9</MedlinePgn></Pagination><Abstract><AbstractText>The effect of temperature on hardening was studied at temperatures ranging from 0 degrees to -20 degrees using twigs of willow and poplar. In October and in late April when the twigs are not very frost hardy, hardening at 0 degrees produced a considerable increase in their frost hardiness, although the effectiveness of hardening at 0 degrees decreased with a decrease in the environmental temperature. In twigs which could withstand continuous freezing without injury, hardening at -3 degrees to -5 degrees was most effective in increasing the frost hardiness of the twigs. Below -20 degrees , only negligible increase was observed either in frost hardiness or sugar content.The rate of starch to sugar conversion differed remarkably in different twig tissues. The starch in xylem was more slowly converted to sugar than that in the cortex. The optimum temperature for converting starch into sugar during frost hardening was also found to be -3 degrees to -5 degrees . In addition, the greater the effectiveness of the hardening treatment, the greater the rate of conversion from starch to sugar. The frost hardiness of a twig is closely related to the sugar content of the twig, especially in the xylem.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Sakai</LastName><ForeName>A</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>The Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Physiol</MedlineTA><NlmUniqueID>0401224</NlmUniqueID><ISSNLinking>0032-0889</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1966</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1966</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1966</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">16656262</ArticleId><ArticleId IdType="pmc">PMC1086345</ArticleId><ArticleId IdType="doi">10.1104/pp.41.2.353</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Japon</li></country></list><tree><country name="Japon"><noRegion><name sortKey="Sakai, A" sort="Sakai, A" uniqKey="Sakai A" first="A" last="Sakai">A. 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