The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Enhancement of Seed Dehiscence by Seed Treatment with Talaromyces flavus GG01 and GG04 in Ginseng (Panax ginseng)

  • Kim, Min-Jeong (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration) ;
  • Shim, Chang-Ki (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration) ;
  • Kim, Yong-Ki (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration) ;
  • Hong, Sung-Jun (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration) ;
  • Park, Jong-Ho (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration) ;
  • Han, Eun-Jung (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration) ;
  • Kim, Seok-Cheol (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development of Administration)
  • Received : 2016.06.18
  • Accepted : 2016.08.30
  • Published : 2017.02.01
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Abstract

Seed dehiscence of ginseng (Panax ginseng C. A. Mayer) is affected by moisture, temperature, storage conditions and microbes. Several microbes were isolated from completely dehisced seed coat of ginseng cultivars, Chunpoong and Younpoong at Gumsan, Korea. We investigated the potential of five Talaromyces flavus isolates from the dehiscence of ginseng seed in four traditional stratification facilities. The isolates showed antagonistic activities against fungal plant pathogens, such as Cylindrocarpon destructans, Fusarium oxysporum, Rhizoctonia solani, Sclerotinia nivalis, Botrytis cinerea, and Phytophthora capsici. The dehiscence ratios of ginseng seed increased more than 33% by treatment of T. flavus GG01, GG02, GG04, GG12, and GG23 in comparison to control (28%). Among the treatments, the reformulating treatment of T. flavus isolates GG01 and GG04 showed the highest of stratification ratio of ginseng seed. After 16 weeks, the reformulating treatment of T. flavus isolates GG01 and GG04 significantly enhanced dehiscence of ginseng seed by about 81% compared to the untreated control. The candidate's treatment of T. flavus GG01 and GG04 showed the highest decreasing rate of 93% in seed coat hardness for 112 days in dehiscence period. The results suggested that the pre-inoculation of T. flavus GG01 and GG04 found to be very effective applications in improving dehiscence and germination of ginseng seed.

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