Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/69294
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dc.coverage.spatialBotany
dc.date.accessioned2016-01-08T09:26:18Z-
dc.date.available2016-01-08T09:26:18Z-
dc.identifier.urihttp://hdl.handle.net/10603/69294-
dc.description.abstractWhile in the vast majority of the plants synthetic auxins in their physiological concentrations cause inhibition or delayed flowering, their effect in pineapple and litchi is found to be sharply different in that the flowering of these plants is very much augmented after appli-cation with them. This has caused a growing interest in the field of flowering of plants in general and that of pineapple plant in particular. The other partinent question lies in auxin-synthesis mechanism existing in the stem apex and leaf bases of this plant (Gordon and Nieva, 1949 ; van overbeek, 1946); from auxin precursors Indole acetaldehyde, to indoleacetic acid (IAA), the only native auxin of plants so far discovered. The logical conclusion is that the flow-ering of pineapple is an auxin controlled process. This conclusion, however, appears to suffer from inconsistancy owing to the fact that acetylene and ethylene, two unsatura-ted hydrocarbons also exert an identical influence on induc-tion of early flowering in this plant (Rodriguez, 1932). These contrasting reports make the problem much more fascinating. With the main object of elucidating the mechanism of auxin action in the flowering and fruit formation of this plant, the present investigation was undertaken. The other associa-ted problem lies in examining the quality of fruits likely to be improved after treatment with auxins. Pineapple plants of variety Giant Kew as selec-ted for the purpose, since in the preliminary trial experi-ments conducted in the experimental farm of Agricultural Botany, this variety proved superior over the other varie-ties in its response to auxin application. Auxin NAA was first applied to the stem apex and leaf bases in aqueous sol-ution using two sets of concentration ranges, in the first set relatively dilute concentrations from 50 to 200 ppm. were used, and in the second set higher concentrations from 250 to 1,000 ppm. were employed for clear appraisal of the optimal and inhibitory level of concentrations. The results revealed that optimal level...
dc.format.extent
dc.languageEnglish
dc.relation
dc.rightsuniversity
dc.titleStudies on the control of flowering and fruiting of pineapples by the application of plant hormones and allied compounds
dc.title.alternative
dc.creator.researcherBaruah, Anuradha
dc.subject.keywordAcetylene
dc.subject.keywordAllied
dc.subject.keywordCalcium
dc.subject.keywordGibberellic
dc.subject.keywordHormones
dc.subject.keywordHydrazide
dc.subject.keywordMorphology
dc.subject.keywordPineapples
dc.description.noteData not available
dc.contributor.guideDas, N
dc.publisher.placeGuwahati
dc.publisher.universityGauhati University
dc.publisher.institutionDepartment of Botany
dc.date.registeredn.d.
dc.date.completed31/12/1966
dc.date.awardedn.d.
dc.format.dimensions
dc.format.accompanyingmaterialNone
dc.source.universityUniversity
dc.type.degreePh.D.
Appears in Departments:Department of Botany

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01_title page.pdfAttached File178.95 kBAdobe PDFView/Open
02_certificate.pdf38.07 kBAdobe PDFView/Open
03_acknowledgement.pdf37.35 kBAdobe PDFView/Open
04_list of contents.pdf65.73 kBAdobe PDFView/Open
05_abstract.pdf120.03 kBAdobe PDFView/Open
06_chapter 1.pdf515.21 kBAdobe PDFView/Open
07_chapter 2.pdf555.67 kBAdobe PDFView/Open
08_chapter 3.pdf2.86 MBAdobe PDFView/Open
09_chapter 4.pdf1.86 MBAdobe PDFView/Open
10_chapter 5.pdf1.4 MBAdobe PDFView/Open
11_general discussion.pdf263.53 kBAdobe PDFView/Open
12_summary.pdf184.9 kBAdobe PDFView/Open
13_bibliography.pdf491.24 kBAdobe PDFView/Open
14_appendix.pdf1.29 MBAdobe PDFView/Open


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