Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Effect of Immature Rhizome Productivity according to Harvest Times-based Treatment Method for Seed Production of Gastrodia elata

천마 종자 생산을 위한 수확시기별 처리방법에 따른 자마 생산력 효과

  • Kim, Chang Su (Jeollabukdo Agricultural Research & Extension Services) ;
  • Kim, Hyo Jin (Jeollabukdo Agricultural Research & Extension Services) ;
  • Seo, Sang Young (Jeollabukdo Agricultural Research & Extension Services) ;
  • Kim, Hee Jun (Jeollabukdo Agricultural Research & Extension Services) ;
  • Lee, Wang Hyu (Department of Agricultural Biology, Chonbuk National University)
  • Received : 2018.03.21
  • Accepted : 2018.05.25
  • Published : 2018.08.31
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Abstract

This study was investigated the effect of immature rhizome production according to harvest times-based treatment method for seed production of Gastrodia elata. The results revealed that when the tuber weight of G. elata harvested in spring (GEHS) was ${\geq}100g$, the rate of artificial fertilization, protocorm formation, and immature rhizome formation was 90.9%-94.8%, 3.1%-5.4%, and 10.1%-15.3%, respectively. When G. elata harvested in fall (GEHF) was treated at a low temperature for 4 weeks or more, the rate of artificial fertilization, protocorm formation, and immature rhizome formation was 70.4%-87.6%, 2.2%-2.6%, 8.7%-9.5%, respectively. Therefore, to produce seeds and immature rhizomes, GEHS must have tubers of more than 100 g, whereas GEHF requires breaking dormancy by low-temperature treatment for 4 weeks or more. Compared with those of GEHS, the rate of artificial fertilization, protocorm formation, and immature rhizome formation was lower in GEHF; however, it was higher than those in the natural germination state. Thus, it can be expected that G. elata can be produced throughout the year by ensuring that the seeds and immature rhizomes of G. elata are produced using a constant tuber weight and by breaking dormancy with low temperature treatment.

본 연구는 천마의 종자생산을 위한 수확시기별 처리 방법에 따른 자마 생산 효과를 구명하고자 수행하였다. 봄수확 천마는 괴경의 무게를 60-99 g, 100-139 g, 140-179 g, 180 g 이상으로 처리하였고, 가을수확 천마는 $5{\pm}1^{\circ}C$의 저온을 2, 4, 6, 8, 10주 처리하였다. 그 결과, 봄수확 천마는 괴경의 무게가 100 g 이상일 경우, 인공수정률이 90.9%-94.8%, 원괴체 형성률이 3.1%-5.4%, 자마 형성률이 10.1%-15.3%로 나타났다. 가을수확 천마는 4주 이상의 저온처리 시 인공수정률이 70.4%-87.6%, 원괴체 형성률이 2.2%-2.6%, 자마 형성률이 8.7%-9.5%로 나타났다. 따라서, 종자 및 자마 생산을 위해서는 봄수확 천마는 100 g 이상의 괴경을 사용해야 하고, 가을수확 천마는 저온에서 4주 이상의 휴면타파가 필요했다. 가을수확 천마를 이용할 경우 봄수확 천마에 비해 인공수정률, 원괴체 및 자마 형성률이 낮았지만, 자연 발아 상태보다 월등히 높았다. 따라서 일정한 괴경의 무게와 저온처리 휴면타파를 이용하면 천마의 종자와 자마가 확보됨으로써 천마의 연중생산이 가능할 것으로 판단되었다.

Keywords

References

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