1. Study on karyotype of Onobrychis viciaefolia.

2. The hypocotyls of aseptic seedlings of Onobrychis viciaefolia Scop. were used as explants for inducing callus. The embryonic cell line ( E-line) and non-embryonic cell line (NE line) were established.

3. The effect of Onobrychis viciaefolia and spring wheat(Triticum aestivum) on the content of soluble salt was studied by field experiment.

4. The infection threads in Onobrychis viciaefolia root nodules were studied with transmission electron microscopy.

5. A cDNA fragment was isolated and cloned from the total RNA of calli of Onobrychis tanaitica containing condensed tannin using RT-PCR technique.

6. Only very few bacteria contain PHB granules in the intercellular spaces and the infection threads of Onobrychis viciaefolia nodules and usually is one in a bacterium.