Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Lateral Bud Suppression and Runner Plants Growth of 'Maehyang' Strawberry as Affected by Application Method and Concentration of IBA

IBA 처리방법과 농도에 따른 딸기 '매향'의 측아 발생 억제와 자묘 생육

  • Hwang, Hee Sung (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • Jeong, Hyeon Woo (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Lee, Hye Ri (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Hwang, Seung Jae (Division of Crop Science, Graduate School of Gyeongsang National University)
  • 황희성 (경상대학교 대학원 작물생산과학부) ;
  • 정현우 (경상대학교 대학원 응용생명과학부) ;
  • 이혜리 (경상대학교 대학원 응용생명과학부) ;
  • 황승재 (경상대학교 대학원 작물생산과학부)
  • Received : 2019.12.19
  • Accepted : 2020.01.22
  • Published : 2020.01.31
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Abstract

This study was conducted to examine the effect by application method and concentration of the indole-3-butyric acid (IBA), which is auxin-based plant growth regulator, on the growth and runner plants production of strawberry in the greenhouse. The seedlings of strawberry were transplanted in the pot (150 ×135 × 90 mm) filled with coir medium on April 12, 2019. The IBA was applied with a foliar spray or drench as 50, 100, 150, and 200 mg·L-1 (50 mL per plant), respectively. The treatment was started on April 29, 2019. The foliar spray and drench treatment of IBA were repeated at 2-week intervals for 9 weeks from the start date of treatment. At 9 weeks after treatment, the petiole length of mother plants was the shortest in the control. The number of runner plants showed a tendency to decreased in the foliar spray. The number of lateral buds showed a tendency to decreased in the IBA treatment, and the least in the foliar with 100 mg·L-1. There was not significantly difference in the fresh and dry weights of the first and second runner plants. However, in the third runner plants, the fresh and dry weights were the greatest in the drench with 100 mg·L-1. Therefore, when considering the growth of third runner plants and lateral bud suppression, the drench with the 100 mg·L-1 could be better application method and concentration of IBA treatment for growth of the third runner plants and runner plants production of strawberry, and the results can be used as a basic research of plant growth regulator application to save the labor force and enhance the seedling quality in strawberry seedling stage.

본 연구는 시설 딸기(Fragaria × ananassa Duch. cv. Maehyang)의 생육과 런너 생산을 위한 옥신계 식물 생장조절제인, IBA의 처리방법 및 농도에 따른 효과를 알아보기 위해 수행되었다. 딸기 묘는 2019년 4월 12일에 코이어 배지가 충진된 화분(150×135 ×90nm)에 정식 하였다. IBA는 0, 50, 100, 150, 200 mg·L-1농도로 각각 엽면살포 및 배지관주 처리로 식물체당 50mL씩 처리하였다. IBA 처리는 2019년 4월 29일에 시작하였다. IBA의 엽면살포 및 배지관주 처리는 처리 시작일로부터 2주 간격으로 9주간 처리하였다. 처리 9주 후, 모주의 엽병장은 대조구에서 가장 짧았다. 자묘의 수는 엽면살포처리에서 감소하는 경향을 보였다. 측아의 수는 IBA 처리에서 감소하는 경향을 보였으며, 엽면살포 100 mg·L-1처리에서 가장 적었다. 1차 묘와 2차 묘의 생체중과 건물중은 처리 간 유의적인 차이가 없었다. 하지만, 3차 묘에서 생체중과 건물중은 배지관주 100 mg·L-1처리에서 가장 무거웠다. 그러므로, 3차 묘의 생육과 측아 발생 억제를 고려하였을 때, 배지관주 100 mg·L-1처리가 IBA를 딸기에 처리함에 있어, 3차 묘의 생육과 자묘 생산에 적절한 처리방법 및 농도인 것으로 보이며 위 결과는 딸기 육묘기에 노동력 절감 및 묘소질 향상을 위한 식물생장조절제 활용의 기초자료로서 활용할 수 있을 것으로 판단된다.

Keywords

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