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Effect of Volatile Substances from Safflower on Germination of Teliospores of Puccinia carthami. J. M. Klisiewicz, Plant Pathologist, ARS, USDA, University of California, Davis 95616; Phytopathology 63:795. DOI: 10.1094/Phyto-63-795.

Exposure of teliospores of Puccinia carthami to volatile substances from safflower resulted in an increase in germination over that of nonexposed spores. Highest percentage germination (more than 90% of spore population) was achieved when spores were exposed to volatile substances from safflower seedlings. Among several non-host plant species, only volatile substances from sunflower seedlings were effective in stimulating germination.