The results of the two-year comparative research of qualitative and quantitative traits of marigold seed of different genotypes in regard to the standard cultivar were analyzed. The highest yield of seed in both study years was registered in genotype "King orange", and the lowest in genotype "R". Concerning the quality of seed, that is, germination energy and total germination, the best results were established for genotype "King orange" and the poorest for genotype "R" in both study years.

Results of two-year investigations (2000 and 2001) on the influence of seeding method and basic meteorological elements (precipitation and temperature) on yield and quality of fenugreek seed (Trigonella foenum graecum L.) are presented in this paper. Considerably higher yield of fenugreek seed in all variations was obtained in the second study year which was probably caused by more favorable precipitation during vegetation period.

Rapid development of plantation-commercial production of medicinal plants demands certain quantities of adequate quality seed. Preliminary results for yield and quality of artichoke seed obtained from one-year and two-year crop plants with two variants of vegetation space sizes are presented. The 'Domestic large' variety was tested. The highest yield of seed was achieved in two-year artichoke plants grown in the variant of 70x50 cm row spacing.