GENETIC-VARIABILITY OF RYE-XENIC-HYBRID TRAITS

In field experiments performed in two localities (Smolice, Wroclaw) 18 xenic hybrids of winter rye, two testers and standard cultivar Dariko wskie Zlote, were analysed. The objects of detailed evaluations were I l traits. For six of them arithmetic means (x), standard deviations (S ), coefficients of variation (cv), coefficients of genetic diversity ( h(2)), correlation coefficients were calculated. Moreover, analyses of variance were carried out and the effects of general (GCA) and specif ic (SCA) combining ability were estimated. The existence of quantitati ve xenia in hybrids was confirmed. It was shown that xenic hybrids, in respect to most of the analysed traits, were insignificantly inferior to the testers and the standard cultivar. However, the decrease of pl ant height has shown to be significant and a tendency to higher yield was observed.