Breeding of a new cultivar, 'Sanggang' with upright stipe and improved shelf life in Agrocybe aegerita. [Korean]

摘要

'Sanggang', a new cultivar of Agrocybe aegerita, was bred with mating between monokaryotic strains isolated from 'GMAG45109' and 'GMAG45107' in Mushroom Research Station, Gyonggi Province A.R.E.S. in 2009. The optimum temperature for the mycelial growth of 'Sanggang' was 26 to 28 degrees C on PDA (potato dextrose agar) medium. The optimum temperature for the primordia formation and fruiting body development of 'Sanggang', was 18 to 20 degrees C. In the bottle cultivation of 'Sanggang', the period of spawn running was around 38 days at 22 to 23 degrees C and the period from scratching of inoculum to harvest was 12 days. These characteristics of 'Sanggang' were not different from those of 'Mihwang' (control). 'Sanggang' had brown-colored pileus, whereas 'Mihwang' had yellowish brown-colored one. In bottle cultivation, 'Sanggang' had a little smaller but stronger stipe and pilus than 'Mihwang', and 'Sanggang', as well as 'Mihwang', had upright stipe. And 'Sanggang' was shown to have lower veil opening ratio than that of 'Mihwang' at harvest time. The yield of fruiting bodies of 'Sanggang' was 134 g/850 ml bottle, which was similar to that of 'Mihwang'. Resistance of 'Sanggang' against Trichoderma spp., as well as 'Mihwang', was weak. Freshness of 'Sanggang' was maintained for 13 days under storage temperature 4 degrees C, while that of 'Mihwang' was maintained for 10 days.