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An Analysis Of Tracheid Length Versus Age In A 4842-year Old Bristlecone Pine (Pinus longaeva D.K. Bailey) Called Prometheus

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An Analysis Of Tracheid Length Versus Age In A 4842-year Old Bristlecone Pine (Pinus longaeva D.K. Bailey) Called Prometheus

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dc.contributor.author Halupnik, Teresa en_US
dc.date.accessioned 2009-09-16T18:20:17Z
dc.date.available 2009-09-16T18:20:17Z
dc.date.issued 2009-09-16T18:20:17Z
dc.date.submitted January 2008 en_US
dc.identifier.other DISS-10103 en_US
dc.identifier.uri http://hdl.handle.net/10106/1844
dc.description.abstract After felling, it was revealed that Prometheus, an ancient bristlecone pine (Pinus longaeva D.K. Bailey) located in the Great Basin National Park, had been the oldest living organism at over 5000 years of age. Great Basin bristlecone pines are famous for their longevity, living thousands of years under extreme conditions of temperature and moisture at high altitudes. For the majority of conifer trees, a period of rapid growth in tracheid lengths has been observed from the pith up to ten to forty years of age. Since most pine trees live for an average of 100-300 years, it was hypothesized that, for a tree with the potential to live thousands of year, the juvenile growth phase is of longer duration than trees that live much shorter lives. Other variations in tracheid length, such as the juvenile growth phase, are based upon intrinsic (genetic) cues and also extrinsic cues, such as site and seasonal qualities. Tracheid lengths were measured from century sample points on Prometheus, as well as points near the pith and the year of felling. A juvenile growth phase was identified that lasted at least one hundred years. In addition, an unusual strong decrease in tracheid length at the year -900 was noted. en_US
dc.description.sponsorship Arnott, Howard en_US
dc.language.iso EN en_US
dc.publisher Biology en_US
dc.title An Analysis Of Tracheid Length Versus Age In A 4842-year Old Bristlecone Pine (Pinus longaeva D.K. Bailey) Called Prometheus en_US
dc.type Ph.D. en_US
dc.contributor.committeeChair Arnott, Howard en_US
dc.degree.department Biology en_US
dc.degree.discipline Biology en_US
dc.degree.grantor University of Texas at Arlington en_US
dc.degree.level doctoral en_US
dc.degree.name Ph.D. en_US
dc.identifier.externalLink http://www.uta.edu/ra/real/editprofile.php?onlyview=1&pid=64
dc.identifier.externalLinkDescription Link to Research Profiles

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