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http://dx.doi.org/10.14480/JM.2014.12.3.171

Nuclear DNA inheritance of intraspecific somatic hybrids by mono-mono cross in Pleurotus ostreatus based on URP-PCR analysis  

Kim, Eun Jung (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
Shin, Pyung Gyun (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
Jang, Kab Yeul (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
Kong, Won Sik (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
Han, Young Sook (Department of Food and Nutrition, Sungshin Women's University)
Yoo, Young Bok (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
Publication Information
Journal of Mushroom / v.12, no.3, 2014 , pp. 171-180 More about this Journal
Abstract
The primary objective of the present study is the characterization of the hybrids of monokaryon- monokaryon (mono-mono) crosses in mushroom breeding. We employed this technique for developing superior strains from Pleurotus species strains with 85 mono-mono intraspecific hybrids of 7 combinations between six Pleurotus ostreatus strains and one Pleurotus florida strain. In this study, the results of analysis on hybridization rate, nuclear DNA patterns, and colors and yields of fruit-bodies, are presented as follows. The crossability between mono-mono crossing ranges between 50 and 93.75%. The results of the analysis on the nuclear DNA patterns of 85 hybrid strains of mono-mono crosses share the nuclei of both parents, but their genetic similarities were predominated by either parent. The hybrid strain between P. florida and P. ostreatus showed patterns more similar to P. florida, while the hybrid strain between P. ostreatus and P. ostreatus either had patterns predominated by either parent strain. The fruiting body colors of the mono-mono crosses mostly had combined colors of both parents but showed the tendency of being more similar to that of either parent. 82% of the hybrid strain indicated similar fruiting body yields compared to both parent strains, while 0% was higher and 18% were lower than both parents. The present study was able to find out and suggest superior hybrid trains by identifying the nuclear DNA patterns of hybrids between Pleurotus species as well as the characteristics of their fruiting bodies. This study expects that the advantages of the mono-mono crossing are needs to be fully utilized in mushroom breeding and it is better to develop superior strains of Pleurotus species strains together with the mono-mono crossing.
Keywords
Mono-mono cross; Nuclear DNA inheritance; Somatic hybrids; URP-PCR; Pleurotus ostreatus;
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Times Cited By KSCI : 4  (Citation Analysis)
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