V.F. Souza
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
ms17: a meiotic mutation causing partial male sterility in a corn silage hybrid
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
Meiotic behavior as a selection tool in silage corn breeding
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
Meiotic behavior of Brachiaria decumbens hybrids
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
Chromosome number, microsporogenesis, microgametogenesis, and pollen viability in the Brazilian native grass Mesosetum chaseae (Poaceae)
The genus Mesosetum is a primarily South American genus with 42 species. Mesosetum chaseae, regionally known as âÂ?Â?grama-do-cerradoâÂ?Â?, 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 CorumbÃ?¡, Mato Grosso do Sul, Brazi.. Read More»
Genet. Mol. Res. 11(4): 2012.September.12.1
DOI: 10.4238/2012.September.12.1
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