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The quality of the seed directly impacts the agronomic characteristics and the final yield of the soybean crop. Therefore, the objective of the study was to evaluate different phytotechnical parameters and the final productivity for different soybean cultivars obtained in a certified way and saved by the rural producer. The study was carried out in the Experimental Area of the University of Cruz Alta. During the 2017/2018 harvest, the plant breeding parameters were evaluated: plant height, stem diameter, number of branches, number of pods, lodging and final yield for cultivars NA5909RG, NS5959IPRO, NS5445IPRO and NS6909IPRO under different ways of obtaining, being these, "saved seeds" and "certified seeds". The phytotechnical parameters evaluated were influenced by the way of obtaining the seed for cultivars NS5445IPRO and NS6909IPRO. Among the evaluated cultivars, it was found that the yield of NS5445IPRO and NS6909IPRO were higher in plants from certified seeds. [ABSTRACT FROM AUTHOR]

The objective of this research was to investigate the correlation between general adaptation note and grain yield as indirect selection strategy. Nine experiments were conducted in the agricultural years of 2000/2001 and 2004/ 2005, in two growing seasons, at Rio Grande do Sul State, Brazil (latitude 29°42 'S, longitude 53°49 `W and altitude 95m). The general adaptation note was evaluated for the grade scale, where I was = excellent and 9 was = very bad, and grain yield was determinate in 14 common bean cultivars. Negative linear correlation was obtained between the general adaptation note and grain yield (r-0.6134). The indirect selection for the general adaptation note is efficient for increment grain yield in common bean in inbred lines. [ABSTRACT FROM AUTHOR]

With the advent of modern agriculture, landrace seeds were replaced by hybrid cultivars, which feature high grain yield potential - though more dependent on intensive technologies. The objective of this work was to evaluate maize landraces, in order to identify more productive materials that can lead a sustainable process in which the grains themselves in which can be used as seed. Fifteen maize varieties were evaluated, with commercial cultivars BR 106 and IPR 114 as controls. The experiments were carried out in Arapongas and Imbaú (Paraná State), during the 2004/2005 agricultural year, without external input. The design used was randomized blocks with four replications. The plots were two 4-m rows, spaced 90 cm apart, with 20 plants/row. The landrace varieties P-13, P-15 and P-05 showed high productive potential in low technological level systems, at each location, as well as in the average of both locales. The varieties P-19 and P-10 have their recommendation restricted to Imbaú, while P-16 and P-17 will be indicated for Arapongas. [ABSTRACT FROM AUTHOR]