Effects of Different Agricultural Wastes on Some Growth Factors, Yield and Crude Polysaccharide Content of Fruits of Medicinal Reishi Mushroom

This study was performed on Reishi mushroom (Ganoderma lucidum) to investigate the effects of different agricultural wastes on some morphological characteristics (growth rate¡ fresh weight and dry weight of mycelia¡ biological yield) and crude polysaccharide content of fruit. Agricultural wastes included: black seed waste¡ tea waste¡ hazelnut waste¡ coconut waste¡ almond waste and sesame waste¡ with two types of bran (wheat and rice). A factorial experiment was done based on the completely randomized design with 3 replications. The results of analysis of variance showed that the use of these agricultural wastes had a significant effect (P≤0.01) on growth rate¡ fresh and dry weight of mycelium and biological yield. The highest growth rate of mycelia (on the basis of days after inoculation to medium colonized completely) was detected in media enriched with tea waste¡ hazelnut waste¡ coconut waste and almond waste (respectively 15.33¡ 16.67¡ 15.33 and 14.33 days). The lowest growth rate of mycelium was detected in media enriched with black seed waste (30.33 days). The substrate supplemented with Almond waste produced the highest amount of fruit fresh weight (31 g) and coconut waste the lowest fruit fresh weight (15.74 g). The highest amount of fruit dry weight (6.51 g) observed in the almond waste treatment and the lowest one observed in the coconut waste treatment (3.75 g). The media supplemented with almond wastes produced the highest biological yield (7.75%)¡ but tea waste¡ hazelnut waste and coconut waste treatments had the lowest biological yield (4.75¡ 5.32¡ 5.27 and 3.93 percent respectively) without significant difference (P≤0.01).