Seeds possesing hard germination ability with long duration of germination has led to the need to determine the germination ability with a simple method. Knowing early the seed vigor and the potential for seed germination, it is important to be sold and to utilise the seeds. Some species of the genus Pistacia (P. vera, P. khinjuk, P. terebinthus) are important rootstocks for pistachio cultivation. Seed germination test under the field conditions is the best indicator to perform germination potential for seeds. However, germination vary according to plant species, although it make take a few days to several weeks and even months in some cases. Tetrazolium test, the most common biochemical test to understand quickly seed vigor and germination potential. By this test the viability rates of P. vera, P. khinjuk and P. terebinthus seeds have been identified to be 50.0%, 45.5% and 21.5%, respectively.
Key Words: Embryonic root, Pistacia, Tetrazolium, Viability test