Studies on development of morphological traits in genetically diversified filed bean cv, (Nadwiślański - traditional cv., Tinos - self-terminating cv.) were conducted in 1996-1997. The plant productivity analysis included the site of seed formation on shoot, i.e. their location on the shoot - a tactor differentiating the share of individual segments of fruiting part of the shoot in yield structure formation and in chemical composition of seeds. Two-factor model of variance analysis with interaction was applied in the calculation as a basis for determination of significance of differences of studied features. Means, standard deviations and range were determined, as well as phenotypic correlations between features. As a result of the investigations it was found that total yield, seed yield of individual plants and yield indicator revealed changes caused mainly by the year of cultivation and chosen variety. A number of seeds per plant the best described it productivity (R2 = 0.9) irrespective of the variety. Pods grouped in the middle segment of fruiting shoot part had the greatest share in the amount of yield. Contents of basic nutrients, i.e. total protein, crude fibre and raw fat in seeds did not change depending on the site of their formation on the shoot. Opposite tendencies were detected as regard tannins and tripsine inhibitors whose higher contents were found in the seeds from the upper section of fruiting shoot. It was particularly visible in self-terminating variety.
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