In vitro Technique for Selection of Radiation Induced Mutants of Tall Fescue

  • Lee K
  • Moon J
  • Ji H
  • et al.
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Abstract

In vitro culture and radiation techniques were used for obtaining mutants tin tall fescue. Endophyte free and friendly tall fescue cultivars Kentucky-31 and Jesup were used for induction of genetic variability through in-vitro mutagenesis. Mature seeds was used for callus induction on 6 mg/L 2,4-D. Actively growing and compact callus was treated with three different doses of gamma rays (10 Gy, 30 Gy and 50 Gy). Maximum proliferation and plantlets regeneration growth was observed in control and minimum at 10 Gy. Furthermore, the maximum number of tiller in the irradiated population was observed in 10 Gy. The treatments 30 Gy and 50 Gy exhibited negative impact on the tillering potential of the tall fescue plant. The object of this study was to develop protocols for mutation breeding in tall fescue through radiation techniques. (서 론 미국을 비롯한 축산선진국에서는 최근 엔 도파이트에 감염되지 않은 (endophyte free 또 는 endophyte friendly) 톨 페스큐 품종 개발 과 이용에 관한 많은 연구가 활발하게 진행 되고 있다 (Meyer et al., 2013; Phillips and Aiken, 2009). 엔도파이트에 감염된 종자를 이용하여 톨 페스큐 초지를 조성하여 가축방 목에 경우 가축의 체온상승, 번식률 저하, 유 량 감소 및 증체 불량 등 그 위해성이 높은 것으로 보고되고 있다 (Gay et al., 1988; Aldrich et al., 1993; Ball et al., 1993). 반면 엔도파이트 감염 종자는 환경재해 내성을 향 상시켜 톨 페스큐 초지의 영속성을 유지하는 데 중요한 역할을 하기도 한다 (Arachevaleta et al., 1989; Malinowski, 2000). 국내에서는 톨 페스큐 품종개발 연구를 1990년대부터 시 작하여 다양한 특성의 우량 영양계통 합성 및 선발을 통해 국내기후에 적합하고 영속성 과 사료가치를 향상시킨 신품종 개발에 관한 연구가 활발하게 진행되고 있으며 진행되고

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APA

Lee, K.-W., Moon, J. Y., Ji, H. C., Choi, G. J., Kim, K.-Y., Hwang, T. Y., & Lee, S.-H. (2013). In vitro Technique for Selection of Radiation Induced Mutants of Tall Fescue. Journal of Animal Environmental Science, 19(1), 63–68. https://doi.org/10.11109/jaes.2013.19.1.063

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