ABSTRACT
The seeds of Tribulus terrestris L. show relatively low germination and a long period of dormancy which results in bare patches in its field cultures decreasing the yield. The yield could successfully be enhanced by supplementation of green house seedlings on the bare patches. A higher germination of the seeds was achieved in a green house by the help of photosynthetic microorganisms which stimulated both germination and young plant development. The composition of fatty acids and sterols of senescent plant biomass was analysed.