Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Sowing Method in Plug Tray for Production of Plug Seedlings of Rehmannia glutinosa (Gaertn.) Libosch. ex Steud.

지황의 공정묘 생산을 위한 플러그 트레이 파종 방법

  • Jeong Hun Hwang (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Eun Won Park (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Hee Sung Hwang (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • So Yeong Hwang (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • Jin Yu (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Seung Jae Hwang (Division of Horticultural Science, College of Agriculture & Life Sciences, Gyeongsang National University)
  • 황정훈 (경상국립대학교 응용생명과학부 ) ;
  • 박은원 (경상국립대학교 응용생명과학부 ) ;
  • 황희성 (경상국립대학교 작물생산과학부) ;
  • 황소영 (경상국립대학교 응용생명과학부 ) ;
  • 유진 (경상국립대학교 응용생명과학부 ) ;
  • 황승재 (경상국립대학교 농업생명과학대학 원예과학부 )
  • Received : 2023.05.30
  • Accepted : 2023.07.03
  • Published : 2023.07.31
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Abstract

Conventionally, the seeds of Rehmannia glutinosa (Gaertn.) Libosch. ex Steud. have been directly sown at the field without using the plug seedling method. Plug seedlings have the advantage of promoting germination and convenient transplanting. However, there is little information about propagation of R. glutinosa using the plug seedling method. This study was conducted to investigate the optimal seed rhizome length, diameter, and sowing direction of R. glutinosa for establishing the plug seedling method. Seed rhizome length and diameter were separated by 1, 2, 3 cm and 0.3-0.5, 0.6-1.0, 1.1-1.5 cm, respectively. And seed rhizomes were sown in vertical and horizontal directions. The survival rate in 1 cm length of seed rhizomes was lower than in other treatments. The leaf length, leaf width, number of leaves, SPAD, leaf area, and fresh and dry weights of shoot and roots were the greatest in 3 cm length of seed rhizomes. As the seed rhizome diameter decreased, the growth characteristics of R. glutinosa tended to increase. When R. glutinosa was sown horizontal direction, the leaf length, leaf width, number of leaves, and leaf area were significantly higher than in the vertical direction. In conclusion, when sowing seed rhizome in a plug tray, using a length of 3 cm, a diameter of less than 1 cm, and sowing in a horizontal direction is considered an appropriate sowing method for R. glutinosa.

일반적으로 지황[Rehmannia glutinosa (Gaertn.) Libosch ex Steud.]은 플러그 묘를 사용하지 않고 노지에 파종한다. 플러그 묘는 발아 촉진과 이식이 편리한 장점이 있다. 그러나 지황의 플러그 육묘를 이용한 번식에 관한 연구는 미흡한 실정이다. 본 연구는 공정육묘 방법 확립을 위한 지황의 최적 종근 길이, 굵기 및 파종 방향을 조사하기 위해 수행되었다. 종근의 길이는 1, 2, 3cm로 구분하였고, 굵기는 각각 0.3-0.5, 0.6-1.0, 1.1-1.5cm로 구분하였다. 그리고 종근은 수직 및 수평 방향으로 파종하였다. 종근 길이 1cm 처리에서 생존율이 유의적으로 낮았다. 엽장, 엽폭, 엽수, SPAD, 엽면적, 지상부와 지하부의 생체중 및 건물중은 3cm 길이에서 가장 높았다. 지황의 종근 굵기가 감소할수록 묘의 생육이 증가하는 경향을 보였다. 지황의 종근을 수평 방향으로 파종하였을 때 엽장, 엽폭, 엽수, 엽면적은 수직 방향보다 유의하게 높았다. 결론적으로 지황 종근을 플러그 트레이 파종할때, 길이 3cm로 절단한 뒤 굵기 1.0cm 이하의 종근을 수평 방향으로 파종하는 것이 적절한 방법으로 판단된다.

Keywords

Acknowledgement

본 논문은 농촌진흥청 공동연구사업(과제번호: RS-2022-RD010298)의 지원에 의해 이루어진 것임.

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