Journal of Practical Agriculture & Fisheries Research (현장농수산연구지)

Korea National University of Agriculture and Fisheries (국립한국농수산대학교 교육개발센터)
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Effects of Light Quality, Temperature or Vermiculite Depth on Germination for the Veronica L.

광질, 온도 및 복토 깊이가 꼬리풀 (Veronica L.) 종자의 발아에 미치는 영향

  • Cheon Young Song (Department of Horticulture, Korea National University of Agriculture and Fisheries) ;
  • Ja Young Moon (Department of Horticulture, Korea National University of Agriculture and Fisheries) ;
  • Jung Won Sung (Department of Crops and Forestry, Korea National University of Agriculture and Fisheries) ;
  • Byeong Seon Park (Division of Garden Material Research, Sejong National Arboretum) ;
  • Jae Ik Nam (Division of Garden Material Research, Sejong National Arboretum) ;
  • Jeong Min Kim (Division of Garden Material Research, Sejong National Arboretum)
  • 송천영 (국립한국농수산대학교 원예학부) ;
  • 문자영 (국립한국농수산대학교 원예학부) ;
  • 성정원 (국립한국농수산대학교 작물.산림학부) ;
  • 박병선 (세종국립수목원 정원소재연구실) ;
  • 남재익 (세종국립수목원 정원소재연구실) ;
  • 김정민 (세종국립수목원 정원소재연구실)
  • Received : 2023.03.09
  • Accepted : 2023.03.23
  • Published : 2023.03.30
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Abstract

This study was conducted to develop a mass production for a commercial use by germination of 4 kinds of Veronica glabrifolia Kitag., V. pusanensis Y.N.Lee, V. glabrifolia Kitag. × V. Spicata 'Alba' and V. spicata 'Ulster Blue Dwarf × V. longifolia. Veronica L. Effects of dipping time to a disinfecting fluid, light quality, temperature or vermiculite depth on the germination of Veronica L. were examined. Germination percentage in a disinfecting fluid for 120 minutes dipping was the 75.1% for V. pusanensis Y.N.Lee, and was some higher in 60 minutes dipping for all the species, but there was no significant difference according to the dipping time. The germination of the light quality was the best in complex light (red light + blue light) as the germination 92.8%, uniformity 2.3 in Veronica glabrifolia Kitag., or the germination 85.9%, uniformity 3.5 in V. pusanensis Y.N.Lee. And the germination percentage of red light was ranged from 79.1% to 95,5%, the blue light was 83.1% to 100% in the all species. However the germination in the dark condition significantly lowered as a 40.0% to 56.3% or uniformity from 5.2 to 6.5. Like this, the germination of blue light was better compare to the red light. The germination rate according to temperature was higher at 25℃ day/20℃ night ranged from 92.1% to 100%, or at 20℃ day/15℃ night as a 85.5% to 98.9% in the all species, compare to constant temperature 25℃ as a 80.9% in V. pusanensis Y.N.Lee. The germination rate of vermiculite depth was higher in 1 to 2mm ranged from 83.4% to 100%, however when the vermiculite was covered with 4mm, the germination rate significantly decreased from 45.2% to 72.1% and the hypocotyl length became longer above 3cm than that of others.

큰산꼬리풀(V. glabrifolia Kitag.), 부산꼬리풀(V. pusanensis Y.N.Lee), 큰산꼬리풀 교배조합(V. glabrifolia Kitag. × V. Spicata 'Alba')과 시판종 교배조합(V. spicata 'Ulster Blue Dwarf × V. longifolia) 등 4종에 대한 종자 소독액의 침지 시간, 광질, 온도 및 복토 깊이가 종자의 발아에 미치는 영향을 알아보았다. 종자의 소독액 침지시간에 따른 발아율 및 발아 균일도는 부산꼬리풀 120분 침지와 나머지 종은 60분 침지에서 다소 양호하였으나 큰 차이는 없었다. 광질의 처리에 있어서 복색광(적색광+청색광)에서 큰산꼬리풀의 발아율은 92.8%, 발아 균일도는 2.3, 부산꼬리풀의 발아율은 85.9%, 발아 균일도는 3.5로 가장 양호하였으며 교배조합에서도 같은 경향을 보였다. 꼬리풀에서 4종에서 적색광의 발아율은 79.1%~95.5%, 균일도는 3.2~4.2이었고, 청색광에서는 발아율은 83.1%~100%, 균일도는 1.9~3.8로 다소 높게 나타났으며 무광상태의 발아율은 40.0~56.3%, 균일도는 5.2~6.5로 현저하게 낮아졌다. 온도 처리에 있어서 주간 25℃/야간 20℃는 최종 발아율 92.1%~100%, 발아 균일도 1.5~2.6로 주간 20℃/야간 15℃ 최종 발아율 85.5%~98.9%, 발아 균일도 1.9~3.1보다 높은 것으로 나타났다. 부산 꼬리풀의 경우 주간 25℃/야간 20℃에서 최종 발아율 92.1%, 발아 균일도가 2.6으로 항온 25℃/24시간처리의 최종 발아율 80.9%, 발아 균일도 3.8보다 최종 발아율 및 발아 균일도가 높게 나타났다. 복토 정도에 따른 발아율 및 발아 균일도는 모든 종에서 1~2mm 복토에서 발아율이 83.4%~100% 및 발아 균일도 0.6~4.2로 가장 좋았으며 4mm로 복토를 많이 하면 최종 발아율 45.2%~72.1%, 발아 균일도 4.3~5.5로 현저하게 낮아지고 배축의 길이도 3cm 이상으로 길어졌다.

Keywords

Acknowledgement

본 연구는 국립세종수목원의 재원으로 지역특화 정원식물 스마트팜 증식기술 개발(베로니카속, 조팝나무속) 용역연구지원에 의해 이루어진 것임.

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