Procedures and evaluation criteria of the tetrazolium test on the seed
s of Salvia splendens Sell ex Roem. Br Schult. and S. farinacea Benth.
were studied. Decoating was found necessary for satisfactory staining
. Soaking the naked embryo in 0.5% TTC solution and incubating at 37.5
degrees C for 30 minutes yielded good results. Six staining patterns
were recognized. The viable categories of each pattern were determined
by the root mean square method. Three patterns represented viable and
three non-viable seeds.