THE INFLUENCE OF B CHROMOSOMES ON THE SUSCEPTIBILITY OF MAIZE TO GAMMA IRRADIATION INDUCED DNA DAMAGE (RECOMBINATION).

Persistent Link:
http://hdl.handle.net/10150/187664
Title:
THE INFLUENCE OF B CHROMOSOMES ON THE SUSCEPTIBILITY OF MAIZE TO GAMMA IRRADIATION INDUCED DNA DAMAGE (RECOMBINATION).
Author:
STAUB, RICK WALTER.
Issue Date:
1984
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:
Tests were conducted to ascertain whether B chromosomes influence the susceptibility of maize (Zea mays L.) plants to gamma-radiation-induced DNA damage. Isogenic stocks of Black Mexican sweet corn with and without B chromosomes were premeiotically irradiated and DNA damage was assayed by measuring pollen viability. Higher pollen viabilities relative to non-irradiated control plants were consistently obtained in irradiated plants with B chromosomes when compared to irradiated plants without B's. Furthermore, among plants irradiated with 1250R those with one B chromosome produced the greatest proportion of viable pollen and plants with increasing numbers of B's produced progressively less viable pollen. An exophenotypic trait elicited by B chromosomes is also reported. Plants with 5 or more B chromosomes often display an aberrant phenotype characterized by longitudinal white leaf stripes and/or narrow leaves. This phenotype intensifies with increasing numbers of B chromosomes and is the first case of a qualitative exophenotypic trait attributable to B chromosomes reported in maize.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Corn -- Genetics -- Effect of radiation on.; Chromosomes -- Effect of radiation on.; DNA.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Genetics; Graduate College
Degree Grantor:
University of Arizona

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleTHE INFLUENCE OF B CHROMOSOMES ON THE SUSCEPTIBILITY OF MAIZE TO GAMMA IRRADIATION INDUCED DNA DAMAGE (RECOMBINATION).en_US
dc.creatorSTAUB, RICK WALTER.en_US
dc.contributor.authorSTAUB, RICK WALTER.en_US
dc.date.issued1984en_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.abstractTests were conducted to ascertain whether B chromosomes influence the susceptibility of maize (Zea mays L.) plants to gamma-radiation-induced DNA damage. Isogenic stocks of Black Mexican sweet corn with and without B chromosomes were premeiotically irradiated and DNA damage was assayed by measuring pollen viability. Higher pollen viabilities relative to non-irradiated control plants were consistently obtained in irradiated plants with B chromosomes when compared to irradiated plants without B's. Furthermore, among plants irradiated with 1250R those with one B chromosome produced the greatest proportion of viable pollen and plants with increasing numbers of B's produced progressively less viable pollen. An exophenotypic trait elicited by B chromosomes is also reported. Plants with 5 or more B chromosomes often display an aberrant phenotype characterized by longitudinal white leaf stripes and/or narrow leaves. This phenotype intensifies with increasing numbers of B chromosomes and is the first case of a qualitative exophenotypic trait attributable to B chromosomes reported in maize.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectCorn -- Genetics -- Effect of radiation on.en_US
dc.subjectChromosomes -- Effect of radiation on.en_US
dc.subjectDNA.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineGeneticsen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.identifier.proquest8412680en_US
dc.identifier.oclc690935024en_US
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