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2018 Vol.27, Issue 4 Preview Page
An Approach to Determine the Good Seedling Quality of Grafted Tomatoes (Solanum Lycopersicum) Grown in Cylindrical Paper Pot Through the Relation Analysis between DQI and Short-Term Relative Growth Rate

DQI와 단기 상대생장률 분석을 이용한 원통형 종이포트 토마토 접목묘의 우량묘 기준 설정

Tae Cheol Seo13*
,
Se Woong An1
,
Hyun Woo Jang1
,
Chun Woo Nam1
,
Hee Chun1
,
Young chul Kim1
,
Tae Kyung Kang2
,
Sang Hee Lee2
서 태철13*
,
안 세웅1
,
장 현우1
,
남 춘우1
,
전 희1
,
김 영철1
,
강 태경2
,
이 상희2
1Vegetable Research Division, National Institute of Horticultural and Herbal Science, RDA, Wanju, 55365, Korea
2Upland Mechanization Team, National Institute of Agricultural Sciences, RDA, Jeonju, 54875, Korea
3World Vegetable Center, Shanhua, 74199, Taiwan
1국립원예특작과학원 채소과
2국립농업과학원 밭농업기계화팀
3세계채소센터
*Corresponding author: tcseo2@korea.kr
30 November 2018. pp. 302-311
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Abstract

Using cylindrical paper pot nursery method, three kinds of commercial tomatoes ‘Dafnis’, ‘DOTAERANG DIA’ and ‘Maescala’ were grafted onto a commercial rootstock ‘B blocking’. From 10 to 40 days after graft-take, growth traits of seedlings were investigated by 0.5, 1.0 and 2.0S treatments of standard nutrient solution(S) for seedling growth, and top to root ratio(TRR), compactness(CP) and Dickson Quality Index(DQI) were calculated. Two weeks after transplanting of the seedlings under three different night temperature targeting to 10, 15, and 25°C, which were not precisely controlled, the relative growth rate (RGR) was investigated. The quantitative growth traits of grafted seedlings increased with increasing fertilizer concentration, and various range of seedling size could be produced. Compactness and DQI were significantly regressed (Adj R2 = 0.9480). Short-term RGR after transplanting was higher at 1.0S treatment of standard nutrient solution at the seedling age of 30 days and 40 days after grafttake( DAGT). DQI and RGR were significantly regressed linearly at respective fertigation strength. Specially the diminishing slope of RGR was lower at 1.0S fertigation strength with the increase of DQI than others. The results indicate that DQI could be applied as a quality index of grafted tomato seedlings and the relation analysis between DQI and short-term RGR also could be used to determine the good quality seedlings of grafted tomato grown in cylindrical paper pot.

Keywords
raising seedling
determination
criteria
performance
absolute growth rate

3종의 일반토마토 ‘대프니스’, ‘도태랑다이아’, ‘마스카라’ 를 대목 ‘B블로킹’에 접목하고 접목 활착 후 10일부터 10 일 간격으로 40일 까지 육묘용 표준양액(S)의 0.5S, 1,0S, 2,0S 로 시비수준 처리를 하였다. 각 시기별로 묘의 생육 인자들을 조사하였고, 묘소질 지표인 TR율, 충실도, DQI 를 계산하였다. 그리고 생육인자들과 묘소질 지표와의 상 관관계를 분석하였고, 묘령별로 야간온도를 10, 15, 25oC 를 목표로 3수준으로 처리하여 상대생장률(RGR)을 분석 하였다. 그 결과, 토마토 접목묘의 양적인 생육인자들은 모두 시비농도가 높을수록 증가하였고, 다양한 크기 범위 의 묘를 생산할 수 있었다. 그리고 묘의 바이오메스 관련 생육인자가 충실도와 DQI에 높은 정의상관이 있음을 알 수 있었으며, 충실도와 DQI의 고도로 유의한 1차 선형회 귀식((Y=-0.0256+0.0029*X, Adj R2=0.9480, p<0.0001)이 도출되었다. 정식 후 2주간의 RGR은 묘령이 높아질수 록 감소하는 경향을 보였고, 육묘기 시비수준에 따라서 는 접목활착 후 30일묘와 40일묘에서 표준 시비수준 1.0S에서 RGR이 높았다. 시비수준별 육묘기 DQI와 정 식후 초기 RGR과 유의한 선형회귀식을 도출하였으며, 표준 시비수준 1.0S에서 DQI가 높아짐에 따라 RGR이 높게 유지되었다. 이러한 결과는 DQI가 원통형 종이포 트 토마토 접목묘의 묘소질의 지표로 이용될 수 있고, DQI와 정식 후 초기 상대생장률과의 관계분석을 통하여 우량묘의 기준 설정에 활용될 수 있을 것이다.

키워드
육묘
설정
기준
성능
절대생장률
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 27
  • No :4
  • Pages :302-311
  • Received Date : 2018-07-13
  • Revised Date : 2018-09-11
  • Accepted Date : 2018-10-01
  • DOI :https://doi.org/10.12791/KSBEC.2018.27.4.302
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