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PHENOTIPICAL AND CITOLOGICAL MODIFICATIONS AT SAINFOIN (Onobrychis viiifolia Scop) TREATED WITH GAMMA RAYS In order to make the experiences it was used the “Splendid” sainfoin cultivar, created at USAMV Cluj. To induce the mutations there were used gamma rays in doses of 25, 50, 75 and 100 Kr. The treated seeds were sown on a certain chosen field, the plant being watched in M1 and M2 generations, respectively the 2nd and the 3rd vegetation year. It was followed the effect of the mutagen agents at the level of some productivity elements as plants` height, weight, offspring’s number and flowering number on plants. It was noticed that in general, mutagen agents have a depression effect upon the productivity elements. Concerning the effect of gamma rays upon the frequency of chromosomal aberrations, it is noticed a direct correlation between mutagen dose and aberrations frequency

STUDY REGARDING SOME PRODUCTIVITY ELEMENTS OF SEVERAL SAIFOIN GENOTYPES (Onobrychis vicifolia Scop.) 24 sainfoid genotypes were taken into study, in the 2nd vegetation year and seven genotypes in the 3rd vegetation year. The features followed were: green weight production, dry weight production and seed production. The analyzed genotypes were tested in a comparative competition culture, for 4 years. There were made phonological observations regarding the capacity of plants to grow in spring, the rhythm of growing, capacity to regenerate after mowing. Also it was followed the phytosanitary stage. During the 2nd vegetation year it was shown an increased green weight production between 2 and 27,1%. Regarding the seed production, the differences towards the variant control are between 6,3 and 28,7.