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Factors Influencing Seed Germination and Seedling Growth in Black Zira [Bunium persicum (Boiss.) B. Fedtsch.]

ABSTRACT In an attempt to promote germination in black zira [Bunium persicum (Boiss.) B. Fedtsch. syn. Carum persicum Boiss.] seeds, a series of seed treatments were tested. Stratification of seeds at 3 to 5° C for 20 days resulted in seed germination, but the best germination was obtained alter stratification for 46 days. The best seedling development occurred if the seedlings had radicles 3 to 5 mm long before transplanting and if the transplants were placed in a soil mixture consisting of clay-loam soil, sand, leaf mold, and peat. Optimum seedling growth occurred at 10 to 25° C.