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고추의 소포자 배양 시 모식물의 생육조건, 소포자 나출 방법, 치상배지 및 광배양이 배의 발생에 미치는 영향

Influence of donor plant growth condition, microspore isolation method, culture medium, and light culture on the production of embryos in microspore culture of hot pepper (Capsicum annuum L.)

  • 발행 : 2007.12.31

초록

효율적이며 반복성 있는 고추의 소포자배양 시스템을 확립하기 위해 꽃봉오리로부터 소포자의 수확 시 나출 방법이 소포자 활력에 미치는 영향을 조사하는 동시에 모 식물 생육 시의 광도, 치상배지의 조성, 및 배양 광 조건이 배의 발생 및 발달에 미치는 영향을 조사하였다. 광도가 10,000 lux 와 5,500 lux로 각기 다른 곳에서 모식물이 생육된 경우 활력 있는 소포자의 비율은 큰 차이가 없었으며, 소포자 배의 발생이나 발달은 저광도인 5,500 lux에서 생육된 경우에 다소 높아 모 식물 생육 시의 광도가 소포자배의 발생에 미치는 영향이 크지 않은 것으로 나타났다. 그러나 5,500 lux에서 생육된 식물에서는 꽃봉오리의 수가 적어 배양에 필요한 소포자를 준비하기가 매우 어려웠다. 활력 있는 소포자의 비율은 체나 막자사발을 이용한 maceration 방법에 비해 blender를 이용하는 경우 13배 이상 높았다. 배의 발생 및 발달에 가장 좋았던 배지는 사용한 배지 중 MN배지였으며, 배양 광 조건은 암 상태에서 배양한 4주 후에 다시 광 상태로 옮겨 1주 배양하는 것이었다. 이상에서와 같은 결과들은 고추에서 형질전환이나 돌연변이 연구에 이용될 수 있을 정도로 많은 배를 생산할 수 있는 소포자 배양 시스템을 확립하는데 중요한 기초 자료가 될 것이다.

To establish an efficient and reliable microspore culture system for pepper (Capsicum annuum L.), the effect of light intensity used for donor plant's growth, microspore isolation methods, the composition of culture medium, and culture period in light on the production of embryos were investigated. The viability of microspores taken from the plants grown under the light intensity of 10,000 lux was almost same as that from the lower (5,500 lux) light intensity, and the embryo induction and development were a bit higher when donor plants were grown under the lower light intensity. This result implies that lower light intensity does not interfere with the embryo induction and development. However, it was very difficult to prepare microspores for culture since only a small number of flower buds could be harvested from plants grown under the light intensity of 5,500 lux. Microspore isolation methods greatly affected microspores viability; that is, when microspores were isolated by blending rather than maceration, the greater number of viable microspores were easily generated (about 13 times). Among media used for microspores culture in this study, MN medium was most efficient for embryo induction and development. Total number of embryos and the number of cotyledonary embryos were highest when microspores were cultured in dark for 4 weeks, and then in light for one week. These results will be provide valuable information to set up efficient microspore culture system of hot pepper with a high frequency of embryo production, which are applicable to gene transformation and mutagenesis.

키워드

참고문헌

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피인용 문헌

  1. High-quality embryo production and plant regeneration using a two-step culture system in isolated microspore cultures of hot pepper (Capsicum annuum L.) vol.112, pp.2, 2013, https://doi.org/10.1007/s11240-012-0222-x