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Breeding for Improved Germination Under Water Stress, and Genetic Analyses of Flowering Habit and Male Sterility in Russian Dandelion (Taraxacum kok-saghyz)

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dc.contributor.advisor Wolyn, David
dc.contributor.author Hodgson-Kratky, Katrina
dc.date.accessioned 2015-06-05T18:51:14Z
dc.date.available 2015-06-05T18:51:14Z
dc.date.copyright 2015-05
dc.date.created 2015-05-28
dc.date.issued 2015-06-05
dc.identifier.uri http://hdl.handle.net/10214/8888
dc.description.abstract Russian dandelion (Taraxacum kok-saghyz Rodin) may serve as a new source of natural rubber; however, domestication of the species is required for cultivation. This research focused on vital issues related to crop development, including improving germination under water-stress, and determining inheritance of flowering habit and male sterility. Three cycles of phenotypic and half-sib family recurrent selection increased germination 34.5% and 42.5%, and reduced germination time 3 and 5 d, respectively, for seeds incubated at low water potential. Phenotypic segregation of progeny from crosses between spring-type and winter-type plants and between male sterile and male-fertile plants suggested that three major loci control flowering habit and cytoplasmic male sterility can be restored to fertility by a nuclear restorer of fertility gene. These results demonstrate that Russian dandelion has potential to be adapted as a crop for rubber production in North America. en_US
dc.language.iso en en_US
dc.rights Attribution-NoDerivs 2.5 Canada *
dc.rights.uri http://creativecommons.org/licenses/by-nd/2.5/ca/ *
dc.subject vernalization en_US
dc.subject flower induction en_US
dc.subject natural rubber en_US
dc.subject recurrent selection en_US
dc.subject self-incompatibility en_US
dc.title Breeding for Improved Germination Under Water Stress, and Genetic Analyses of Flowering Habit and Male Sterility in Russian Dandelion (Taraxacum kok-saghyz) en_US
dc.type Thesis en_US
dc.degree.programme Plant Agriculture en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Plant Agriculture en_US
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Attribution-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NoDerivs 2.5 Canada