Wpływ stosowania retardanta wzrostu na wartość pokarmową nasion zróżnicowanych morfologicznie odmian bobiku

The effect of a growth retardant (Cycocel 460 SL) on seed and protein yield, gross chemical composition, and amino acid composition of seeds was tested on two indeterminate (Kodam and Nadwiślański) and one determinate (Titus) field bean cultivars. In addition, nutritive value of seed protein was determined using growing rats. Of the studied cultivars Nadwiślański had the highest whereas Titus had the lowest total protein and crude fibre contents. The growth retardant had no effect on gross chemical composition of field bean seeds. Nutritive value of seed protein was limited by sulphur amino acids (Met + Cys) and threonine in all cultivars. However, Titus had an advantage in terms of amino acid composition and nutritive value of seed protein. The growth retardant decreased CS values of seed protein and increased biological indices of its nutritive value i.e. BV, TD, and NPU.