Effects of cultivation substrate composition on biological productivity and quality parameters of Ganoderma lucidum

Abstract

A substrate composition experiment was carried out to utilize the waste parts of certain plants for cultivation of Ganoderma lucidum, a medicinal mushroom. Ganoderma mycelium (millet spawn) provided by the Atatürk Horticultural Central Research Institute (Yalova, Türkiye). Nine (9) different substrate recipes were used in this study; S1: 40% sawdust + 40% chickpea stalk + 20% bran, S2: 60% sawdust + 20% chickpea stalk + 20% bran, S3: 40% sawdust + 40% pea stalk + 20% bran, S4: 60% sawdust + 20% pea stalk + 20% bran, S5: 40% sawdust + 40% poppy stalk + 20% bran, S6: 60% sawdust + 20% poppy stalk + 20% bran, S7: 40% sawdust + 40% corn cob + 20% bran, S8: 60% sawdust + 20% corncob + 20% bran and S9 (Control): 80% sawdust + 20% bran. Mushroom fruiting bodies were obtained from all substrates. Biological efficiency (BE) was varied between 7.84 and 17.92%. BE in S2, S5, S6, S7, S8 and S9 was higher than S4, S3 and S1. The highest total yield was recorded in S6 with 88.38 g 1.5 kg bag-1. The earliest mushroom was harvested from corncob (S8) and sawdust (S9) recipes within 51 days. The protein content of fruiting bodies ranged from 31.51% to 51.4%. Nitrogen, potassium, calcium, magnesium and iron content of fruiting bodies were increased by mixing 40% corncob to substrate and zinc was enriched by adding 20% chick pea stalk. Adding corncob to the substrate may enrich the Ganoderma fruiting body protein and mineral content without decreasing the yield and biological efficiency.