Desempenho agronômico de linhagens e cultivares de feijão comum na região do ecótono Cerrado/Pantanal

Abstract

Beans have been widely cultivated throughout Brazil. However, low productivity indexes have been obtained with the cultivation of many cultivars available on the market, so the use of genetic improvement can be a technology to develop more productive bean cultivars adapted to the specific conditions of each Brazilian region. The objective of this study was to evaluate the agronomic characteristics and reaction to diseases in 19 common bean genotypes of the Carioca trade group, among strains and commercial varieties, to obtain information about genotypes with better productive potential in the aquidauana region, MS. The experiment was conducted during the "dry" harvest. The experimental design adopted was in randomized blocks, with three replicates and 19 treatments (cultivars Pérola and BRS Estilo and the lines BRS CNFC 10429, BRS CNFC 10762, CNFC 15003, CNFC 15010, CNFC 15018, CNFC 15023, CNFC 15025, CNFC 15033, CNFC 15035, CNFC 15038, CNFC 15049, CNFC 15070, CNFC 15082, CNFC 15086, CNFC 15097, CNFC 15001, CNFC 15044). The genotypes were evaluated for the following traits: Days for flowering (DFL); Days for physiological maturation (MFD); Plant height (APL); Number of pods per plant (NVP); Number of grains per pod (NGV); Mass of 100 grains (MCG); Grain yield (PROD) and Disease incidence. The genotypes Pérola, BRS CNFC 10429, CNFC 15086, CNFC 15082 were more productive and adapted to the Cerrado-Pantanal ecotono region of Mato Grosso do Sul, and all are susceptible to bacterial cresting.

Responses of IPR Campos Gerais and BRS Estilo bean cultivars to different nitrogen fertilizer rates in corn (Zea mays L.) succession

“…In the present experiment, from the control to the highest N doses, the two cultivars obtained yield values higher than the Paraná and national averages (Table 3). The average productivity obtained in the present experiment, despite being above the Paraná and national average, is still low, especially when it is known that the crop has the potential to produce in excess of 4000.00 kg ha -1 (Barbosa & Gonzaga, 2012). De Souza Lima et al (2020, consider that the productivity of the common bean is the product of three primary components of production, namely, number of pods per plant, number of grains per pod and grain mass.…”

“…Density reflects the spacing between lines and the number of plants per linear meter (Melo, 2009). Regarding the number of pods per plant, there was no difference within the cultivars for the N doses, however there was a difference between the cultivars ( Souza Lima et al (2020), the number of pods per plant is a genetic characteristic of each cultivar. There is genetic variability between the two cultivars, despite both being from the commercial group in Rio de Janeiro (Table 1).…”

“…The similar to those obtained in the present experiment, except for yield, which the lowest obtained in the present experiment was 2700.00 kg ha -1 , higher than that obtained in Aquidauana. Souza Lima et al (2020), the mass of a thousand grains is a characteristic that, although genetically controlled, is greatly influenced by environmental factors, which justifies different results for the same genotypes when cultivated in different environmental conditions. The characters number of pods per plant and mass of a thousand grains showed a high degree of association with the productivity character (Coimbra et al, 2000).…”

AGRONOMIC RESPONSE OF Phaseolus vulgaris CULTIVARS IN AGROCLIMATIC CONDITIONS OF “SAN JUAN AND MARTÍNEZ”, CUBA

“…In Cuba, the area destined to this crop exceeds 147,000 ha, with an average agricultural yield of 1.09 t ha −1 (ONEI, 2019), although domestic production still does not meet consumption needs (Martínez et al, 2017;Hernández-Ochandía et al, 2018). Therefore, regionalization studies are required in the common bean (Martínez et al, 2019a) that guarantee the use of better adapted cultivars (Lima et al, 2020) and agricultural yields according to their genetic potentials. Cabrera et al (2017) also suggest that these elements demand applied research in different agroecosystems to contribute to the availability of this grain legume in the market.…”