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ABSTRACT. The genetic parameter estimates of the iron and zinc concentrations in Andean common bean seeds were obtained using the IAC Boreal × Light Red Kidney and Ouro Branco × Light Red Kidney crosses. The parents and the F 1 , F 1 reciprocal, F 2 , F 2 reciprocal, and backcross BC 11 and BC 12 generations were evaluated in a field experiment that was carried out in the state of Rio Grande do Sul, Brazil. The iron concentration in Andean common bean seeds ranged from 24.70 to 102.40 mg kg -1 dry matter (DM), the zinc concentration ranged from 10.73 to 37.50 mg kg -1 DM, and no significant maternal effect was observed. The narrow-sense heritability ranged from low (h 2 n= 19.04%) to high (h 2 n= 63.60%) for the concentrations of iron and zinc, respectively. Hybrid vigor and transgressive segregation were observed for the iron and zinc concentrations in Andean common bean seeds. In the hybrid combination IAC Boreal × Light Red Kidney, it was possible to select recombinants for the iron and zinc biofortification program. From the tested hybrid combinations, recombinants with low iron and zinc concentrations in seeds could be selected to use when the diet needs to be restricted in those minerals.

Choosing parent tropical wheat genotypes through genetic dissimilarity based on REML/BLUP

-The objective of this work was to evaluate the main differences in the genetic control of the iron concentration in Mesoamerican and Andean common bean seeds, in early generations, and to select recombinants with a high iron concentration in the seeds. F 1 , F 1 reciprocal, F 2 , F 2 reciprocal, and backcross (BC 11 and BC 12 ) generations were produced by crosses between Mesoamerican (CNFP 10104 x CHC 01-175) and Andean (Cal 96 x Hooter) inbred lines. The expression of significant maternal effect was observed for the Mesoamerican gene pool. Iron concentration was higher in the seed coat of Mesoamerican common bean seeds (54.61 to 67.92%) and in the embryo of Andean common bean seeds (69.40 to 73.44%). High broad-sense heritability was obtained for iron concentration in Mesoamerican and Andean common bean seeds. Gains with the selection of higher magnitude, from 20.39 to 24.58%, are expected in Mesoamerican common bean seeds. Iron concentration in common bean seeds showed a continuous distribution in F 2 , which is characteristic of quantitative inheritance in Mesoamerican and Andean common bean seeds. Recombinants with high iron concentration in seeds can be selected in both Mesoamerican and Andean common bean hybrids.

Carioca beans will achieve better consumer acceptability if they exhibit high grain quality. The objectives of this work were to identify the visual quality traits that determine consumer choice of carioca beans; to evaluate whether the commercial brands of carioca beans present differences in their technological, cooking and nutritional quality traits; and to select the best commercial brand of carioca beans according to these traits using a selection index. For this purpose, six different commercial brands of carioca beans were evaluated with respect to consumer preference and their grain physicochemical traits. The visual quality traits, colour and grain size, defined the consumer choice of carioca beans. The commercial brands of carioca beans presented differences regarding their technological, cooking and nutritional quality traits. Brand 4 had lighter colour grains (L* = 53.33), a slightly red shade (a* = 6.20), medium-sized beans (27.52 g), an elliptical shape, a semi-full flatness, and a fast cooking time (15 min and 25 s). The brand 4 showed high concentrations of protein, potassium, phosphorus, calcium, zinc and copper, and this sample was the preference of 51.92% of the survey participants. The best commercial brand of carioca beans selected by the selection index was brand 4 for its technological, cooking and nutritional quality traits.

Beans can be found in different grain colours, and for this reason, it is important to understand the technological and nutritional quality of the diverse types of beans that are consumed. The objectives of this work were to identify the traits that determine Brazilian consumer choice of different bean colours and to evaluate whether different bean colours present differences in technological and nutritional traits. For this purpose, beans of different colours (white, cranberry, matte red kidney, shiny red kidney, and black) were obtained from supermarkets. The samples were evaluated for consumer preference and the technological and nutritional traits of the beans. In southern Brazil, the majority of the survey participants (58%) preferred black beans, and their choice was based on consumption habit (66%) and grain colour (30%). Different bean colours presented differences for all traits related to technological and nutritional quality, except for potassium concentration. Consumption habit and grain colour defined consumer choice for black beans. Black beans were preferred by 58% of the participants, and this type of bean has high concentrations of calcium, magnesium, iron, zinc and copper.

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