Cardinal Temperatures of Germination in Medicinal Pumpkin (Cucurbita pepo convar. pepo var. styriaca), Borago (Borago officinalis L.) and Black Cumin (Nigella sativa L.)

F. A. Ghaderi, A. Soltani and H.R . Sadeghipour

Asian Journal of Plant Sciences 7 ( 6 ): 574 - 578 , 2008