Effect of cytokinin, gibberellin, and nitrogen applications on the growth of eldarica pine seedlings

Persistent Link:
http://hdl.handle.net/10150/276979
Title:
Effect of cytokinin, gibberellin, and nitrogen applications on the growth of eldarica pine seedlings
Author:
Darwiche, Amal Omar, 1964-
Issue Date:
1989
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A greenhouse experiment was conducted over a ninety day period to test the effect of different nitrogen fertilizer regimes and several application rates of compounds with gibberellin and cytokinin activity (GA4/7 and BA, respectively) on the growth and development of Pinus brutia var. eldarica. Nitrogen produced no significant effects and this was attributed to its abundance in the potting medium, to begin with. All levels of growth regulators used showed a highly significant effect on vegetative development. A reduction in root collar diameter, shoot elongation, needle nitrogen content and oven-dry weight, was observed, especially when the medium and high hormonal rates were used. Phytotoxicity increased with the increase in concentration of both chemicals. Ba induced a proliferation of adventitious buds along the stem of saplings, but this was accompanied with rapid new top growth and branching at the top only when BA was applied in conjunction with GA4/7.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Cytokinins.; Plants -- Effect of gibberellins on.; Plants -- Effect of nitrogen on.; Pinus brutia.; Pine -- Arizona -- Growth.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Renewable Natural Resources
Degree Grantor:
University of Arizona
Advisor:
Ffolliott, Peter F.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleEffect of cytokinin, gibberellin, and nitrogen applications on the growth of eldarica pine seedlingsen_US
dc.creatorDarwiche, Amal Omar, 1964-en_US
dc.contributor.authorDarwiche, Amal Omar, 1964-en_US
dc.date.issued1989en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA greenhouse experiment was conducted over a ninety day period to test the effect of different nitrogen fertilizer regimes and several application rates of compounds with gibberellin and cytokinin activity (GA4/7 and BA, respectively) on the growth and development of Pinus brutia var. eldarica. Nitrogen produced no significant effects and this was attributed to its abundance in the potting medium, to begin with. All levels of growth regulators used showed a highly significant effect on vegetative development. A reduction in root collar diameter, shoot elongation, needle nitrogen content and oven-dry weight, was observed, especially when the medium and high hormonal rates were used. Phytotoxicity increased with the increase in concentration of both chemicals. Ba induced a proliferation of adventitious buds along the stem of saplings, but this was accompanied with rapid new top growth and branching at the top only when BA was applied in conjunction with GA4/7.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectCytokinins.en_US
dc.subjectPlants -- Effect of gibberellins on.en_US
dc.subjectPlants -- Effect of nitrogen on.en_US
dc.subjectPinus brutia.en_US
dc.subjectPine -- Arizona -- Growth.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorFfolliott, Peter F.en_US
dc.identifier.proquest1336675en_US
dc.identifier.oclc22696156en_US
dc.identifier.bibrecord.b17481727en_US
dc.identifier.bibrecord.b17481715en_US
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