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Original Articles

Rooting and Survival Rate as Affected by Various Types and Concentrations of Auxin on ‘Maehyang’ Strawberry in Cutting Propagation

‘매향’ 딸기의 삽목 번식 시 옥신의 종류 및 처리 농도에 따른 발근율과 생존율

Hee Sung Hwang1
,
Hyeon Woo Jeong2
,
Hye Ri Lee2
,
Hyeon Gyu Jo2
,
Seung Jae Hwang345†
황 희성1
,
정 현우2
,
이 혜리2
,
조 현규2
,
황 승재345†
1Graduate Student, Division of Crop Science, Graduate School of Gyeongsang National University, Jinju 52828, Korea
2Graduate Student, Division of Applied Life Science, Graduate School of Gyeongsang National University, Jinju 52828, Korea
3Professor, Department of Agricultural Plant Science, College of Agriculture & Life Sciences, Gyeongsang National University, Jinju 52828, Korea
4Professor, Institute of Agriculture & Life Sciences, Gyeongsang National University, Jinju 52828, Korea
5Professor, Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Korea
1경상대학교 대학원 작물생산과학부 대학원생
2경상대학교 대학원 응용생명과학부 대학원생
3경상대학교 농업생명과학대학 농업식물과학과 교수
4경상대학교 농업생명과학연구원 교수
5경상대학교 생명과학연구원 교수
*hsj@gnu.ac.kr
31 January 2021. pp. 56-64
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Abstract

This study was conducted to examine the effect by different types and concentrations of auxin on the rooting and growth of strawberry (Fragaria × ananassa Duch. cv. Maehyang) cuttings in the greenhouse. The NAD (1-naphthylacetamide), IBA (indole-3-butyric acid), and IAA (3-indoleacetic acid) were applied with a 1 hour soaking as 50, 100, 150, and 200 mg·L-1, respectively. The non-treatment was set as the control. The cuttings of strawberry were transplanted in the strawberry seedling tray filled with coir medium on June 4, 2020. The humidification was carried out for 2 weeks. The average relative humidity, daytime temperature, and nighttime temperature inside the humidification tunnel was 63.4 ± 15%, 29.3 ± 5°C, and 16.2 ± 5°C, respectively. There was no significant difference in rooting rate on the control, IBA, and IAA treatments. However, significantly low rooting rates were observed in NAD treatments. The survival rates were significantly higher in the control and IBA with 50 mg·L-1 than in other treatments. The number of leaves was the highest in IBA with 100 mg·L-1. The root length was the longest in the control. More number of roots were counted in IAA with 100 and 150 mg·L-1. The dry weight of root was the heaviest in the control. The total root length, root surface, number of root tips, and number of root forks were significantly higher in the control. As a result, control, IAA, and IBA showed similar shoot and root growth. However, NAD showed the worst root and shoot growth. Consequently, compared with IAA and IBA, NAD was not appropriate plant growth regulator of rooting for cutting propagated strawberries.

Keywords
1-naphthylacetamide
3-indoleacetic acid
indole-3-butyric acid
root surface
total root length

본 연구는 옥신의 종류와 처리 농도가 온실 내 딸기(Fragaria × ananassa Duch. cv. Maehyang) 삽목묘의 발근과 생육에 미치는 영향을 알아보기 위해 수행되었다. 삽수는 NAD(1- naphthylacetamide), IAA(3-indoleacetic acid), 그리고 IBA (indole-3-butyric acid)에 각각 50, 100, 150, 및 200mg·L-1 농도로 1시간 동안 침지 처리되었다. 무처리는 대조구로 설정되었다. 삽수들은 2020년 6월 4일에 코이어가 충진된 딸기 육묘용 트레이에 삽목 되었다. 가습 처리는 2주 동안 처리되었다. 대조구, IBA, 및 IAA는 처리간 발근율에 있어 유의적인 차이가 없었다. 그러나 NAD 처리에서는 유의적으로 낮은 발근율이 관찰되었다. 생존율은 대조구와 IBA 50mg·L-1 처리에서 다른 처리에 비해 유의적으로 높았다. 엽수는 IBA 100mg·L-1 처리에서 가장 많았다. IAA 100과 150mg·L-1 처리에서 다른 처리에 비해 더 많은 주근 수가 관찰되었다. 지하부 건물중은 대조구에서 가장 무거웠다. 총 뿌리길이, 뿌리 표면적, 근단 수 및 뿌리 분기 수는 대조구에서 유의적으로 가장 높은 값을 보였다. 결과적으로, 대조구, IAA, 그리고 IBA 처리는 유사한 지상부와 지하부 생육을 보였다. 그러나, NAD 처리는 가장 좋지 않은 지상부와 지하부 생육을 보였다. 이를 고려하였을 때, NAD 처리는 IAA, IBA와 비교하여 딸기 삽목묘의 발근에 적절하지 않은 생장조절물질로 판단된다.

키워드
1-naphthylacetamide
3-indoleacetic acid
indole- 3-butyric acid
뿌리 면적
총 뿌리 길이
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 30
  • No :1
  • Pages :56-64
  • Received Date : 2020-11-02
  • Revised Date : 2020-12-18
  • Accepted Date : 2020-12-22
  • DOI :https://doi.org/10.12791/KSBEC.2021.30.1.056
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