Abstract: The increased interest cultivation of mustard (Sinapis alba) in our country, as evidenced by the significant growth areas and in recent years has led us to address a number of scientific investigations and practical importance. When establishing research objectives were taken into account, on the one hand by the fact that in our country, research on this species are exclusively related to culture technology, on the other hand, the fact that this species is globally little studied in genetically.The main objective of our research was the establishing the general and specific combinatory ability in order to choose the best genitors and to forecast the most valuable hybrid combinations on the ground of the analysis of the first generation.We studied plant size, which compared with the parental forms based on the analysis of the first generation hybrids achieved most values close to their average.The incomplete dominance was associated with the small size of the plants in the F1 generation of hybrids and with the large size in the F2 generation of hybrids.From the point of view of the proportion of dominant or recessive alleles (i.e. positive or negative), parental forms ranged into distinct groups. These differences were due to the action of the environmental factors that made different gene groups detain the main role in the control of the studied features. Thus, we could see that dominance is associated with negative alleles and recessiveness with positive alleles for plant size.

mustard/Sinapis alba, general and specific combinatory ability, hybrids

Presentation: oral