The Biology of Lentinus polychrous Lev. in Nakhon Phanom Province, Thailand and Kwaeng Kham Muan, Laos

Abstract

This article describes the results of the survey on mush-rooms in Nakhon Phanom province Thailand and Kwaeng Kam Muan Laos done from April to November 2010. It was found that there were 13 varieties in Na-khon Phanom and 10 varieties in Kwaeng Kam Muan. The 13 varieties in Nakhon Phanom were College of Agriculture and Technology NPU 1 variety, Amphoe Tha U Ten 4 varieties, Kalasin province 1 variety, Amphoe Pla Pak 2 varieties, Tum-bon Wangtamua Amphoe Muang 4 varieties and Amphoe Renunakhon 1 variety. In Kwaeng Kam Muan, Laos there were 10 varieties: 2 varieties in Muang Hin Boon, 2 varieties in Muang Tha Khaek, 3 varieties in Muang Yomarat, 1 variety in Muang Mahachai and 2 varieties in Muang Nagai. Each variety was different re-garding cap, gills, scales, stalk, color, and size. The caps of these varieties were 4.0 - 14.5 cm in diameter. The caps of some varieties were thick while those of other varieties were thin. The number of gills was about 85-730, and the length of gills was 2.0 - 10.0 cm. The young gills were creamy white in color but the old gills were dark brown. The weight of dry mushroom was 2.0 - 15.0 g. The weight of wet one was 5.0 - 35.0 g. Scales on caps of mushrooms were different in cold season (October - November) and rainy season (April - July). In cold season skin of caps was scabbed and scattered but in rainy season the skin was smooth. Some stalks were short and others were long. Some varieties had short stalks. Average was 1.0 - 2.0 cm. Some varieties had long stalks. Average was 3.0 - 3.5 cm. The colors of caps were mainly brown, but some caps were white-brown and other caps were yellow-brown. When a mushroom is small, it was young about 1 day but when it grew to big size, it was about 2 or 3 days after primordial of mush-room. So Thailand or Laos varieties were similar, also. It meant that it could be preventive against cancer if you eat it always.