Biochemical and physiological adaptations of alfalfa to germination stresses imposed by sodium-chloride

Persistent Link:
http://hdl.handle.net/10150/277063
Title:
Biochemical and physiological adaptations of alfalfa to germination stresses imposed by sodium-chloride
Author:
Poteet, David Charles, 1953-
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:
Nine cycles of recurrent selection for germination salt tolerance in alfalfa (Medicago sativa L.) were compared with their parental cultivar, 'Mesa-Sirsa'. Test seeds were produced in the same season and locale. Cycle 9 and Mesa-Sirsa showed 90% and 2.5% germination, respectively, in a -1.7 MPa NaCl medium. Cycle 8 germinated more vigorously compared to Mesa-Sirsa in stressed and non-stressed environments. Selection also enhanced germination speed and radicle length. Fresh seed and one year old seed showed similar percent germination. Scarification decreased germination in a saline solution. Mesa-Sirsa and Cycle 8 displayed the same pattern of water uptake in a salt solution. Salinity decreased water uptake in Cycle 8 and Mesa-Sirsa compared to the control. Cycle 8 and Mesa-Sirsa contained 7% galactomannan and 3.2% stachyose. Galactomannan was not an important factor in seed salt tolerance. Seed protein content was stable throughout the cycles of selection. Selection for germination salt tolerance in alfalfa significantly affected the percentage of seed amino acids.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Alfalfa -- Seeds.; Germination.; Plants -- Effect of salt on.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Plant Sciences
Degree Grantor:
University of Arizona
Advisor:
Dobrenz, Albert K.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleBiochemical and physiological adaptations of alfalfa to germination stresses imposed by sodium-chlorideen_US
dc.creatorPoteet, David Charles, 1953-en_US
dc.contributor.authorPoteet, David Charles, 1953-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.abstractNine cycles of recurrent selection for germination salt tolerance in alfalfa (Medicago sativa L.) were compared with their parental cultivar, 'Mesa-Sirsa'. Test seeds were produced in the same season and locale. Cycle 9 and Mesa-Sirsa showed 90% and 2.5% germination, respectively, in a -1.7 MPa NaCl medium. Cycle 8 germinated more vigorously compared to Mesa-Sirsa in stressed and non-stressed environments. Selection also enhanced germination speed and radicle length. Fresh seed and one year old seed showed similar percent germination. Scarification decreased germination in a saline solution. Mesa-Sirsa and Cycle 8 displayed the same pattern of water uptake in a salt solution. Salinity decreased water uptake in Cycle 8 and Mesa-Sirsa compared to the control. Cycle 8 and Mesa-Sirsa contained 7% galactomannan and 3.2% stachyose. Galactomannan was not an important factor in seed salt tolerance. Seed protein content was stable throughout the cycles of selection. Selection for germination salt tolerance in alfalfa significantly affected the percentage of seed amino acids.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectAlfalfa -- Seeds.en_US
dc.subjectGermination.en_US
dc.subjectPlants -- Effect of salt on.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplinePlant Sciencesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorDobrenz, Albert K.en_US
dc.identifier.proquest1337486en_US
dc.identifier.oclc22895128en_US
dc.identifier.bibrecord.b17525068en_US
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