Physiological Study of the Symbiotic Germination of Orchid Seeds

摘要: In two previous papers (6, 7) I have presented evidence that germination of orchid seeds is dependent upon an available supply organic matter. These emphasized the nutritional aspects problem, and also certain views with respect to possible function fungus in pure culture experiments made by BERNARD (I), BURGEFF (4), others. All who studied agree there something very unusual about most orchids, for they cannot germinate when merely supplied water nutrient salts. According BERNARD, BURGEFF, IRAMSBOTTOM (ii), CONSTANTIN MAGROU (5), normal on infection embryo appropriate fungus. Symbiosis believed these men be obligative development orchids. a broad sense means living together dissimilar organisms. Under this definition, wide range associations might considered. The term as applied relation between includes idea some manner benefit plant, and, according others, normal-