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Mapping of a novel viviparous unstable mutant of maize (vp12)
Paula G. Araujo; William J. da Silva; Mirian P. Maluf; Laudenir M. Prioli
Departamento de Genética e Evolução, Instituto de Biologia, Centro de Biologia Molecular e Engenharia Genérica, Universidade Estadual de Campinas, Caixa Postal 6109,13083-970 Campinas, SP, Brasil. Send correspondence to L.M.P.
ABSTRACT
A new viviparous mutant of maize (Zea mays L.), associated with genetic instability and designated viviparous-12 (vp12), was identified in a synthetic Tuxpeño adapted to tropical regions. In the present work, the linkage group of this new locus was determined. Progenies of inbred line L477 segregating for the vp12 mutant were crossed with waxy-marked reciprocal translocation stocks. The phenotypic frequencies of the wx and vp12 mutants were analyzed in F2 progenies. The results demonstrated that the Viviparous-12 locus of maize is located on the long arm of chromosome 6.
Keywords: maize; mutant; genetic instability; genetic map.
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