The number of nodules and primordia on the transgenic roots of the k1-1 line transformed with the p35S::K1::t35S and pLeEXT1::K1::t35S constructs during inoculation with GUS-labelled R. leguminosarum bv. viciae strain. The data of 4 independent biological repeats were analyzed. The Mann-Whitney U-test was used to estimate the differences between two variants. The differences between variants can be considered as insignificant (using significance level p = 0.05).