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.

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The objective of this study was to evaluate the agronomic performance of 17 common bean genotypes of the Carioca and Black commercial groups, between advanced lines and commercial varieties, in the Cerrado-Pantanal ecotone region. The study was developed in the experimental area of the State University of Mato Grosso do Sul, University Unit of Aquidauana, in the "dry" harvest. The experimental design used was randomized blocks, with 17 treatments and three replications. The genotypes were evaluated for the following traits: days for flowering; insertion height of the first pod; plant height; number of pods per plant; number of grains per pod; 100 grain mass; grain yield and susceptibility to diseases. The data obtained, except for the diseases, were submitted to variance analysis and the means grouped by the Scott-Knott test at 5% probability. The genotypes differed according to the variables, days for flowering, pod insertion height, 100-grain mass and yield. Under the conditions of the region, only the genotypes IAC Alvorada, IAPAR 81, TAA Bola Cheia, IAC Diplomata, BRS Esteio, Pérola, BRS Estilo, CNFC 10729 and CNFP 10 794 presented higher agronomic performance compared to the others. All genotypes were susceptible to bacterial cresting and angular staining.

O objetivo do presente estudo foi de avaliar a germinação de sementes de Naga Jolokia (Capsicum chinense Jacq.) sob estresse salino com efeito da aplicação de doses de silício. O delineamento experimental utilizado foi inteiramente ao acaso, com nove tratamentos (doses de cloreto de sódio associados com Silício) e quatro repetições, constando de 36 unidades experimentais. Para o estresse salino foi empregado concentrações de cloreto de sódio nas doses de 0; 3,5 e 4,5 dS m-1, e como fonte de silício utilizou-se dióxido de silício, sendo aplicadas as seguintes doses: 0, 30 e 60 g de silício 100 kg sementes-1. As variáveis analisadas foram plântulas anormais, plântulas mortas, germinação, índice de velocidade de germinação, comprimento da parte aérea e de raiz e massa fresca e seca. Os resultados da análise de variância evidenciaram diferença significativa para os tratamentos (P>0,05), para as variáveis plântulas anormais, plântulas mortas, germinação, índice de velocidade de emergência e massa seca de plântula, indicando efeito positivo da aplicação do silício, concluindo que condições de elevada salinidade, influenciam de forma negativa as variáveis observadas, porém, nos tratamentos com salinidade a adição de silício ajuda a atenuar o estresse na planta.