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.

This study aimed to assess genetic dissimilarity and based on the qualitative and quantitative characteristics of 52 soybean cultivars grown in the Northwest Region of the state of Rio Grande do Sul. The experiment was conducted at the Center for Research and Agronomic Results of the Missions (CEPRAM). The experimental design used was randomized blocks with treatments arranged in four replications. Soybean qualitative attributes were measured, being the maturity group, flower color, pod color, seed shape, tegument color, anthocyanin pigmentation in the hypocotyl, pubescence color, pubescence density, hilum color, seed brightness and biotechnological event. Together, quantitative attributes were measured in ten plants per experimental unit, such as yield, number of pods per plant, number of grains per plant, grain mass per plant and thousand seed mass. The most productive cultivars were P95R90 IPRO, BMX Raio IPRO, NS 5445 IPRO, P95R30 IPRO, P95Y02 IPRO, TMG 7058 IPRO and DM 5958 IPRO. Yield correlates positively with the number of pods, number of grains, grain mass and thousand seed mass. The dendrogram for the quantitative characteristics and the decision tree showed that the formation of the groups and the grain yield were determined mainly by the grain mass and the thousand seed mass. Among the components of variance and genetic parameters, the variables thousand grain mass, grain mass and yield are influenced by 59%, 32% and 29% respectively by genetic effects.

This work aimed to position white oat cultivars for the organic system, and to highlight which characteristics determine grain yield and their interrelationships. The research was conducted at Instituto Regional de Desenvolvimento Rural belonging to Universidade Regional do Noroeste do Estado do Rio Grande do Sul, located in the municipality of Augusto Pestana – RS. The experimental design used was randomized blocks with treatments arranged in four replications. The treatments corresponded to the cultivars: IPR Artemis, IPR Afrodite, URS Corona, URS Brava and URS Taura. The characters measured in the useful area of ​​each experimental unit were: final plant population per square meter (PPSM, units), days between sowing and flowering (DF, days), days between sowing and maturation (DM, days) , number of tillers (TILL, units), percentage of lodging (LOG, %), intensity of diseases damage (INTD, %), plant height (PH, cm), height of panicle insertion (HPI, cm), number of panicles per square meter (NPSM, units), number of grains per panicle (NGP, units), grain weight per panicle (GWP, g), thousand grain weight (TGW, g), grain yield (GY, kg). The cultivar URS Afrodite is superior for plant height, height of panicle insertion, number of panicles per square meter. The cultivar URS Corona stood out for the number of grains per panicle, grain weight per panicle with a grain yield of 1885.08 kg ha-1 and low incidence of diseases, being recommended for the organic system in the Northwest region of Rio Grande do Sul.

Breeding programs of soybean preconize the productivity as well as tolerance to biotic and abiotic stresses. In view of the lack of information regarding the multivariate selection of soybean segregating families, the objective of this study was to select superior soybean families and to define segregation patterns through multivariate models. The experiment was conducted in 2017/2018 the experimental design used was augmented blocks with 290 F3 segregating families, and seven cultivars homozygotes arranged in four repetitions. Was employed the frequency distribution, Euclidean algorithm, Tocher optimized grouping method, relative contribution methodology of Singh's and Artificial Neural Networks. Soybean segregating families express high genetic variability within and between the segregating populations of origin. The heterogeneities in the soybean segregation profile are derived from the genetic complementarity of the contrasting parents used. The multivariate models allow to define patterns for the selection of transgressive families that tend to the agronomic ideotype of the commercial cultivars.