Abstract:
Hypsizygus ulmarius is a popular mushroom due to its excellent consistency of cap and stipe,
culinary qualities and longer shelf life. In Tamil Nadu, Hypsizygus ulmarius may take position
among the consumers, but currently this mushroom is not cultivated in large scale. In the present
study the yield efficiency in terms of mycelial colonization, pinhead formation, fruit body
formation and biological efficiency were investigated. Results revealed that yield of two strains
of Hypsizygus ulmarius CO2 and IIHR Hu1 ranged from 693.4 gms to 579.11gms. Biological
efficiency was higher in H. ulmarius CO2 (46.22+_4.98) when compared to H. ulmarius IIHR
Hu1 (38.61+_4.30%), revealing strainal variation.
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