Phaseolus vulgaris

White mold resistance-associated quantitative trait loci in the Jalo x Small White common bean population

D. A. Souza, Balestre, M., Pamplona, A. K. A., Leite, M. E., Dias, J. A., Santos, J. B., Souza, D. A., Balestre, M., Pamplona, A. K. A., Leite, M. E., Dias, J. A., and Santos, J. B., White mold resistance-associated quantitative trait loci in the Jalo x Small White common bean population, vol. 15, p. -, 2016.

We aimed to identify simple sequence repeat (SSR) markers linked to quantitative trait loci (QTLs) associated with white mold resistance in a segregating population derived from a cross between common bean cultivars Jalo and Small White, in the Southern State of Minas Gerais. Parents were crossed to obtain the F2 generation of 190 plants. From these, F2:3 and F2:4 progenies were obtained for phenotypic evaluation. DNA was extracted from F2 plants and parents for genotyping with SSR primers.

Genetic potential of segregating populations of red beans conducted by the bulk method with selection

J. A. N. Menezes Júnior, Carneiro, J. E. S., Menezes, V. M. P. S., Carneiro, P. C. S., Júnior, J. A. N. Menezes, Carneiro, J. E. S., Menezes, V. M. P. S., and Carneiro, P. C. S., Genetic potential of segregating populations of red beans conducted by the bulk method with selection, vol. 15, p. -, 2016.

This study evaluated the performance and estimated the genetic potential of segregating populations of red bean. Twenty populations of the second cycle of recurrent selection for red bean breeding at Universidade Federal de Viçosa were advanced to the F5 generation in bulk with selection for grain appearance. Populations plus five controls were evaluated for grain yield in three dry seasons (2004, 2005, and 2007) in a 5 x 5 lattice design with three replications, in four 4-m long rows.

Geometry applied to breeding common beans (Phaseolus vulgaris)

J. G. Lima, Ramalho, M. A. P., Lima, J. G., Ramalho, M. A. P., Lima, J. G., and Ramalho, M. A. P., Geometry applied to breeding common beans (Phaseolus vulgaris), vol. 15, p. -, 2016.

The primary components of common bean (Phaseolus vulgaris) grain yield (W) are the number of pods (X), the number of grains per pod (Y), and the weight of the grains (Z). In 1964, Grafius suggested using geometry in plant breeding; W corresponds to the volume of a parallelepiped with three axes, X, Y, and Z. Because the cube is the largest parallelepiped by volume, maximum yield is obtained when the relative contributions of X, Y, and Z are the same. We evaluated individual plants of a ‘Talismã’ x ‘L.59583’ cross in two sowing periods.

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