Korean Journal of Plant Tissue Culture (식물조직배양학회지)

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Factors Affecting Efficiency of Anther Culture and Phenotypic Characteristics of Anther -derived Progeny in Broccoli

녹색꽃양배추 (Brassica oleracea L. var. italica)의 약배양 효율증진과 약유래 계통의 특성

  • 남시춘 (충북대학교 첨단원예기술개발연구센터) ;
  • 윤광현 (충북대학교 첨단원예기술개발연구센터) ;
  • 백기엽 (충북대학교 첨단원예기술개발연구센터)
  • Published : 1999.07.01
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Abstract

This study was carried out to clarify several factors affecting embryogenesis from anther culture of nine cultivars in Brassica oleracea L. var. italica and to investigate the characteristics of plants derived from anther culture. Androgenesis from anther culture was elevated on the B5 medium supplemented with 0.1mg/L NAA, 0.1mg/L 2.4-D and 10% sucrose. Embryo production in liquid medium was five-fold higher than solid medium. High temperature treatment at 35$^{\circ}C$ for one day before transfer to culture room maintained at $25^{\circ}C$ had effective to induce embryogenesis of cultured anthers but extended treatment at 35$^{\circ}C$ decreased significantly the percent of embryogenesis. Frequency of embryogenesis from cultured anthers exhibited significant difference from 2.8% in 'Green Valiant' to 21% in 'Haisi' as affected by genotypes. Percent of spontaneously dihaploid among regenerated plants from anther culture was ranged from 62 to 74% as affected by the genotypes. Characteristic in relation to plant height, number of leaves and branches, and size of head from anther-derived plants showed differential variation in 'Rokguray' and 'Haisi'. Among these charaters obtained from two cultivars, five lines were selected for early maturity, long plant height and large head. Selected lines were used as breeding meterials for F$_1$ hybrid.

녹색꽃양배추의 약배양에 영향을 미치는 제 조건을 규명하고 다양한 유전적인 특성을 가진 품종들을 대상으로 다수의 계통을 유기하여 신품종 육성 소재로 이용하고자 실험한 결과는 다음과 같다. 배지시험 결과 B5배지에 NAA 0.1 mg/L + 2.4-D 0.1mg/L + 당 10% 처리구에서 배상체 발생율이 가장 높았으며 액체배지가 고체배지보다 5배 정도 배발생에 효과적이었다. 약접종 직후 35$^{\circ}C$ 고온처리 일수에 따른 시험에서는 1일처리가 가장 효과적이었으며 시일이 경과할수록 배상체 발생율이 현저히 저하되었다 품종간 배상체 유기율은 Green valient 2.8%에서 Haisi의 21%까지 차이가 심하였으나 이배체율은 62~74%로 품종간 큰 차이를 나타내지 않았다. Rokguray와 Haisi두 품종 약유래 계통의 포장특성 검정결과 초장, 엽수, 측지수, 화뢰의 지름은 다양한 변이를 보였으며 두 품종에서 유기된 계통들 중 조숙이며 초장이 크고 화뢰의 지름이 큰 계통과 중만생이며 엽수가 많고 화뢰의 지름이 작은 계통을 각각 5계통, 7계통을 선발하여 F$_1$육성 소재로 이용하였다.

Keywords

References

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