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V.F. Souza

Publications of : V.F. Souza
Plant Genetics   Research Article

Efficiency of selection per se and in single-cross hybrids for disease resistance in maize

Plant breeding strategies are constantly refined to increase efficiency during the selection process. Consequently, the aims of this study were to examine genetic control and efficiency of selection based on the per se performance of maize lines and based on hybrid performance in reaction to white spot, common rust, and ear rot diseases in maize breeding programs. W.. Read More»

Genet. Mol. Res. 16(3): gmr16039716

DOI: 10.4238/gmr16039716

Plant Genetics   Research Article

Meiotic behavior as a selection tool in silage corn breeding

    V.F. Souza, M.S. Pagliarini, C.A. Scapim, M. Rodovalho and M.V. Faria

In breeding programs, commercial hybrids are frequently used as a source of inbred lines to obtain new hybrids. Considering that maize production is dependent on viable gametes, the selection of populations to obtain inbred lines with high meiotic stability could contribute to the formation of new silage corn hybrids adapted to specific region. We evaluated the meio.. Read More»

Genet. Mol. Res. 9(4): vol9-4gmr924

DOI: 10.4238/vol9-4gmr924

Human Genetics   Research Article

ms17: a meiotic mutation causing partial male sterility in a corn silage hybrid

    M.S. Pagliarini, V.F. Souza, N. Silva, C.A. Scapim, M. Rodovalho and M.V. Faria

Cytological analysis under light microscopy of the single hybrid P30R50 of silage corn revealed an abnormal pattern of microsporogenesis that affected the meiotic products. Meiosis progressed normally until diakinesis, but before migration to the metaphase plate, bivalents underwent total desynapsis and 20 univalent chromosomes were scattered in the cytoplasm. At th.. Read More»

Genet. Mol. Res. 10(3): vol10-3gmr1037

DOI: 10.4238/vol10-3gmr1037

Plant Genetics   Research Article

Meiotic behavior of Brachiaria decumbens hybrids

    V.F. Souza, M.S. Pagliarini, C.B. Valle, N.C.P. Bione, M.U. Menon and A.B. Mendes-Bonato

Brachiaria decumbens is a forage grass of inestimable value for livestock in Brazil due to its production of good quality forage even when planted on acid and poor soils, although it is susceptible to pasture spittlebugs. Only one cultivar, cv. Basilisk, has been used as the pollen donor in crosses with Brachiaria ruziziensis since 1988 at Embrapa Gado de Corte Research Center. Breeding within .. Read More»

Genet. Mol. Res. 14(4): 2015.October.21.5

DOI: 10.4238/2015.October.21.5

Microbial Genetics   Research Article

Chromosome number, microsporogenesis, microgametogenesis, and pollen viability in the Brazilian native grass Mesosetum chaseae (Poaceae)

    L.A.C. Silva M.S. Pagliarini S.A. Santos N. Silva V.F. Souza

The genus Mesosetum is a primarily South American genus with 42 species. Mesosetum chaseae, regionally known as ‘grama-do-cerrado’, is abundant in the Pantanal Matogrossense (Brazil); it is a valuable resource for livestock and for environmental conservation. We collected specimens from the Nhecolandia sub-region of the Brazilian Pantanal, located in Corumbá, Mato Grosso do Sul, Brazil. We ex.. Read More»

Genet. Mol. Res. 11(4): 2012.September.12.1

DOI: 10.4238/2012.September.12.1