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International Journal of Medicinal Mushrooms
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ISSN Druckformat: 1521-9437
ISSN Online: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018026236
pages 451-458

Detection of Quantitative Trait Loci Underlying Yield-Related Traits in Shiitake Culinary-Medicinal Mushroom, Lentinus edodes (Agaricomycetes)

Wen-bing Gong
Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, People's Republic of China; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, People's Republic of China
Lei Li
School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
Yan Zhou
Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
Yinbing Bian
Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
Hoi-shan Kwan
School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
Man-kit Cheung
School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
Yang Xiao
Institute of Applied Mycology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China

ABSTRAKT

Increasing yield is a principal goal when breeding Lentinus edodes. The detection of quantitative trait loci (QTLs) underlying yield and its related traits, precocity and the number of fruiting bodies (NFs), is important in order to breed high-yield cultivars. Using composite interval mapping (CIM), we mapped a total of 25 QTLs responsible for precocity, NFs, and yield in 2 segregating populations of L. edodes. QTLs for the 3 traits were mapped on 5 different linkage groups, contributing 5.9% to 15.4% of the phenotypic variation. Colocated QTLs were also found underlying multiple traits, implying the presence of a genic pleiotropic effect or tightly linked genes. This is, to our knowledge, the first report of the genetic dissection of precocity, NFs, and yield using QTL mapping in L. edodes. Findings of this study will facilitate marker-assisted breeding of high-yield cultivars of L. edodes.


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