A connection between polyploidy and apomixis is universally recognized but literature data are contradictory on artificial polyploidization influences upon manifestation of apomixis in cultivars. In sorghum (Sorghum bicolor (L.) Moench), polyembryonic seeds were found with an equal or lower frequency in autotetraploid analogues of three varieties compared with diploid analogues (Tsvetova and Ishin 1996). As polyembryony is a well-known marker of apomixis, these data suggests that in autotetraploid sorghums there is a tendency for apomixis to be lower than in diploids. An embryological study was undertaken to verify these findings.