Aseptic Germination of F1 Hybrid Seed by Inter-species Pollination of Calanthe discolor Lindl. and C. discolor for. Sieboldii (Decne.) Ohwi

새우난초(Calanthe discolor Lindl.)와 금새우난초[C. discolor for. sieboldii (Decne.) Ohwi]의 종간교배에 의한 1대잡종 종자의 기내무균 발아

  • Published : 2008.08.30

Abstract

Two orchid species of Calanthe discolor Lindl. and C. discolor for. sieboldii (Decne.) Ohwi, which have different form flower color and size. They were crossed in mid April by artificial pollination, and the F1 hybrid seeds were collected mid October. Germination of seeds was investigated on pre-treatment of seeds and under the various environmental conditions. Germination was promoted by moisture absorption and ultrasonic treatment of seeds. Dark culture of F1 hybrid seeds enhanced germination and protocorm formation, and development into seedlings compared with light culture. Although, plant growth regulators such as NAA and BA had a slightly promotive effect on seed germination and protocorm growth, regenerated seeding were showed abnormal growth patterns. Regenerated F1 hybrid plantlets were successfully transferred to pot.

원예화 가능성이 매우 높은 왕새우난초($C.{\times}bicolor$)의 기내 대량증식법을 확립하기 위해 새우난초(C. discolor)와 금새우난초(C. discolor for. sieboldii)를 4월 중순에 종간 인공 교배하여 같은 해 10월 중순에 F1 잡종 종자를 획득하여 종자의 전처리 및 여러 가지 배양환경에 따른 발아율 및 기타 생육 특성을 조사하였다. 파종 시 종자의 전처리에 따른 F1 종자의 기내 발아율을 조사한 결과, 종자의 흡습처리와 초음파 처리가 종자의 발아율과 원괴체 형성율을 높일 뿐만 아니라 원괴체의 형성기간도 단축되었다. 또한 파종 후 암배양하는 것이 종자의 발아율 및 원괴체의 형성율이 높았다. 발아 배지에 NAA와 BA 등의 호르몬 첨가는 발아율과 원괴체의 형성율을 촉진하였지만 비정상적 인 유묘가 많이 발생하여 건강한 유묘의 생산에는 적합하지 않았다. 유묘는 활성탄을 $0.5g/L^{-1}$를 첨가한 H3P4배지에 계대배양하여 건강한 새우난초 유식물체를 생산하였으며, 화분에서 성공적으로 순화하여 새우난초와 금새우난초의 인공교배를 통하여 원예성이 높은 왕새우난초을 육성할 수 있음을 확인할 수 있었다.

Keywords

References

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