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Mapping and characterization of early flowering and brachytic3 mutants in Maize (Zea mays L.)

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dc.contributor.advisor Lukens, Lewis Avila Bolivar, Luis M. 2012-01-10T15:54:17Z 2012-12-19T06:00:08Z 2011-12 2011-12-19 2012-01-10
dc.description.abstract Early flowering is important for maize adaptation to short-season growing environments. Dwarfism, by preventing lodging, has the potential to increase grain yield. This thesis investigates three novel mutants of maize. The early flowering mutant (EarlyF) sheds pollen 1 to 5 days earlier than wild type plants. EarlyF, was shorter and developed fewer leaves than wild type plants, suggesting an earlier transition from vegetative to reproductive development. A candidate QTL for EarlyF maps to bin 7.03. The two allelic dwarf mutants, brachytic3-1 and brachytic3-2, have short internodes at maturity, resulting in severely reduced plant height. Despite being short, days to pollen shed and number of leaves were unchanged for both brachytic3-1 and brachytic3-2. brachytic3 maps to a ~ 7 Megabase region of bin 5.04. This thesis characterizes EarlyF, br3-1 and br3-2 and sets the stage for positionally cloning the mutations causing these mutants and has potential to contribute to maize improvement. en_US
dc.language.iso en en_US
dc.subject maize brachytic mutant flowering time EMS en_US
dc.subject genetics QTL cloning en_US
dc.title Mapping and characterization of early flowering and brachytic3 mutants in Maize (Zea mays L.) en_US
dc.type Thesis en_US Plant Agriculture en_US Master of Science en_US Department of Plant Agriculture en_US

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