This research determined the adaptability and stability of soybean yield for organic systems in different environments. Grain yield data (GY, kg ha-1) from experiments with six soybean genotypes evaluated in six environments in Brazil and one environment in Paraguay were used. The experimental design used was randomized blocks, organized in an incomplete factorial scheme, with six environments in Brazil (Toledo- PR, Palotina- PR, Mangueirinha- PR, Três Passos- RS, Passo Fundo- RS, Major Vieira- SC) and one in Paraguay (Bela Vista do Norte- PY) with six soybean genotypes (BRS 284, BRS 391, BRS 511, BRS 523, BRS 525, BRS 535) arranged in four replications per environment. BRS 511 genotype was characterized by high average grain yield and stability by the AMMI method. BRS 284 genotype was identified as the ideal genotype in the GGE biplot method. WAASBY and BLUP index selected BRS511 and BRS284 genotypes.
<p><strong>Background. </strong>White oat is a multifunctional species with significant benefits to human health, so the positioning of genotypes in the organic system is substantial to promote the expression of maximum productive potential. <strong>Objective.</strong> To select and identify the genotypes with greater stability and productive adaptability. <strong>Methodology.</strong> The study was carried out in 11 environments located in the countries of Brazil (states of Rio Grande do Sul and Paraná) and Paraguay (Itapúa) in 2019 and 2020, evaluating in each of them four genotypes of white oats (<em>Avena sativa</em>) (URS Corona, URS Brava, IPR Artemis and IPR Afrodite) each considered as treatments. The experimental design was randomized blocks with four replications per treatment. The variables analyzed were grain yield (GY, kg ha<sup>-1</sup>) and the cycle in days from emergence to physiological maturity (PM). With the presence of G x E interaction, AMMI and GGE biometric methods were used to study adaptability and stability. <strong>Results.</strong> With the data obtained, it was possible to form three mega-environments with the identification of specifically adapted genotypes. The URS Brava genotype was characterized as the ideal genotype, with high stability and wide adaptability for grain yield, which can be positioned in all environments. High altitudes promoted a longer crop cycle and lower grain yield, while low altitudes induced a shorter cycle and grain yield maximization of white oat genotypes. <strong>Implications.</strong> The current results indicate that it is possible to position a single genotype within a region formed by similar environments, as well as it was identified that the crops should preferably be carried out in regions of lower altitudes. <strong>Conclusion.</strong> The URS Brava genotype is considered the ideal genotype with high potential for productivity at low altitudes.</p>
White oat (Avena sativa L.) is a cold season grass, with a very important role, both in animal and human food, due to the chemical composition of its grains, which have, among other beneficial components, fiber soluble food products, beta‐glucans. Therefore, the demand for grains of the crop is maximized and it is important to increase grain production. This can be achieved through the adequate positioning of the genotypes in the growing environments to maximize the agronomic performance of the crop. Thus, the objective of this work was to decompose meteorological and geographic variables in the positioning of white oat genotypes. The study took place considering 39 genotypes of white oats in 21 environments (in 13 years), in six municipalities of Rio Grande do Sul, two locations in the state of Santa Catarina, ten in Paraná and three municipalities in the state of São Paulo. The average grain yield (kg ha−1) of the genotypes in each environment was used to determine the adaptability and stability of the genotypes through the application of the Genotype and Genotypes by Environments Interaction (GGE biplot) biometric method and the reaction norm. The reaction norm pointed out that the genotypes UPFPS Farroupilha, UPFA Gaudéria and URS Guará demonstrated general adaptability to all environments, while FAEM 006 and URS Charrua expressed stability, high grain yield and higher than average genetic value. The GGE biplot graphically demonstrated that the genotypes URS Monarca and IPR Artemis demonstrated the highest grain yield and high stability in the environments Eldorado do Sul ‐ RS (E7) and Pelotas ‐ RS. Identifying genotypes with superior agronomic performance in specific environments minimizes the effects of genotype x environment interaction. These white oat genotypes can be used as sources of alleles for the development of new genotypes.This article is protected by copyright. All rights reserved
Este trabalho teve como objetivo selecionar genótipos de trigo com base na adaptabilidade e estabilidade da expressão de aminoácidos em seus grãos. Nosso experimento foi conduzido durante a safra 2019 em cinco ambientes no estado do RioGrande do Sul (RS). Utilizou-se o delineamento experimental em blocos ao acaso organizados em esquema fatorial com cinco genótipos de trigo cultivados em cinco ambientes, com três repetições por ambiente. O genótipo BRS Parrudo potencializa aexpressão de aminoácidos em seus grãos quando cultivado em Cachoeira do Sul-RS. Pela metodologia BLUP, também expressa melhor todos os aminoácidos avaliados em seus grãos. A pesquisa pode identificar e posicionar genótipos de trigo para obter maior concentração de aminoácidos em seus grãos. Os aminoácidos aspartato, prolina e triptofano apresentam as maiores herdabilidades no sentido amplo, favorecendo a seleção de genótipos para aumentar essas características.
Flaxseed is an oil plant, belonging to the Linaceae family, of an autogamous species. The objective of this work is to evaluate grain yield through edaphoclimatic variables, which are descriptive of field, soil and climate in relation to the production of the line in the state of Rio Grande do Sul. The trial was carried out at the Regional Institute of Rural Development (IRDeR), belonging to the Regional University of the Northwest of the state of Rio Grande do Sul (Unijuí); the experimental design used was that of randomized blocks, organized in a factorial scheme of 5 application moments x 5 doses of nitrogen in 3 replications, totaling 75 experimental units. The traits evaluated were grain yield in relation to the soil, climate and field attributes. Grain yield is directly and indirectly influenced by base saturation at pH 7.0 and soil compaction, and also by the maximum temperature and minimum temperature. The condition of the climate during the culture cycle influences the components of the grain yield of flaxseed. The maximum and minimum temperature were negatively related to flaxseed grain yield under the conditions of the study. The Track Analyses allowed us to visualize the contribution of both chemical and physical attributes to the final production. Higher values of base saturation enhance flaxseed grain yield. Variables number of capsules, number of capsules that formed grains, number of grains per plant, population, and mass of grains per plant were the variables that determined grain yield.
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