Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Growth, Yield, and Leaf-macronutrient Content of Grafted Cherry Tomatoes as Influenced by Rootstocks in Semi-forcing Hydroponics

반촉성 수경재배시 대목에 따른 방울토마토 접목묘의 생육, 수량 및 엽 내 양분 함량

  • Hyewon Lee (Department of Horticulture, Korea National University of Agriculture and Fisheries) ;
  • Hyo Bong Jeong (Vegetable Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Jun Gu Lee (Department of Horticulture, University of Agriculture & Life Sciences, Jeonbuk National University) ;
  • Indeok Hwang (R&D Center, Bunongseed Co., Ltd.) ;
  • Deok Ho Kwon (Department of Horticulture, Korea National University of Agriculture and Fisheries) ;
  • Yul Kyun Ahn (Department of Horticulture, Korea National University of Agriculture and Fisheries)
  • 이혜원 (국립한국농수산대학교 원예학부) ;
  • 정효봉 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 이준구 (전북대학교 농업생명과학대학 원예학과) ;
  • 황인덕 (부농종묘 육종연구소) ;
  • 권덕호 (국립한국농수산대학교 원예학부) ;
  • 안율균 (국립한국농수산대학교 원예학부)
  • Received : 2022.12.27
  • Accepted : 2023.01.18
  • Published : 2023.01.31
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Abstract

There are many different types of cultivation in tomatoes for year-round production. One of them, semi-forcing cultivation is characterized by growing seedlings in winter season. If grafted seedlings are used in winter season that energy cost can be reduced, because they have tolerance to cold stress. This study was conducted to analyze the rootstock performance by measuring the growth, yield, and leaf-macronutrient content of cherry tomatoes grown in semi-forcing hydroponics. Three domestic rootstocks 'HSF4', '21LM', '21A701', and a control cultivar 'B-blocking' were grafted onto jujube-shaped cherry tomato (Lycopersicon esculentum L.) commercial cultivar 'Nonari'. The total yield per plant with grafted cherry tomato '21A701' was 3,387g, which was 11%, 22% and 24% higher than the yield with 'B-blocking', non-grafted one and 'HSF4'. The stem diameter of '21A701' was thick with 8.26mm, whereas non-grafted one was thin with 7.23mm at 160 days after transplanting. The flowering position of '21LM' was 34% and 47% higher than the flowering position of 'B-blocking' and non-grafted one at 153 days after transplanting. The NO3-N concentration in petiole sap of '21LM' was the highest with 1,746mg·L-1 and non-grafted one and 'HSF4' were the lowest with 1,252mg·L-1 and 1,245mg·L-1 at 167 days after transplanting. The results indicated that rootstock/scion combinations in cherry tomatoes can affect the plant growth, yield, and the concentration of different NO3-N in leaves at the late growth stage. Both '21A701' and '21LM' have vigorous root system, which influence the growth and yield increased.

토마토 재배 작형 중 반촉성재배는 저온기 육묘가 특징으로 저온에 내성을 갖는 접목묘를 사용하면 겨울철 난방비를 절감할 수 있다. 본 연구는 반촉성 수경재배 시 방울토마토 대목 종류에 따라 나타나는 생육과 수량 변화를 비교 분석하고 엽 내 양분 함량을 측정하여 국내에서 육성한 대목의 성능을 검정하고자 수행하였다. 실험 재료로는 대목 계통 'HSF4', '21LM', '21A701'과 대조 대목품종 'B-blocking'을 사용하였으며, 접수 품종으로 대추방울토마토 'Nonari'를 사용하여 접목 처리구 4개와 비접목 처리구 1개를 실험에 사용하였다. 정식 후 160일에 '21A701' 대목 처리구의 줄기직경은 8.26mm로 대조 대목 처리구인 'B-blocking'보다 0.27mm 더 두꺼웠고 비접목 처리구는 7.23mm로 얇았다. 정식 후 153일에 '21LM' 처리구의 개화위치는 18.0cm로 'B-blocking'보다 6.2cm 더 높았고, 비접목 처리구는 9.6cm로 낮았다. '21A701'의 주당 총 수량은 3,387g으로 'B-blocking'보다 11% 높았고 비접목 처리구와 'HSF4'보다 각각 22%와 24% 더 높았다. 정식 후 167일에 '21LM'의 NO3-N 농도는 1,746mg·L-1로 높았고 비접목 처리구와 'HSF4'는 각각 1,252mg·L-1와 1,245mg·L-1으로 낮았다. '21A701'과 '21LM'은 뿌리 활력이 강해 생장과 수량이 다른 처리구에 비해 증가한 것으로 판단된다. 'HSF4'의 주당 총 수량이 적은 이유는 접목 친화성이 낮아 양수분의 이동이 약하고 이에 따라 생장과 엽내 질산태 질소 함량이 감소한 것으로 판단된다. 처리 간 수량과 생육 정도가 생육 후기 엽내 양분 함량과 비슷한 양상을 보여 엽병 즙액 분석을 통해 대목의 성능을 분석할 수 있는 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 공동연구사업(과제번호 PJ013561032022)의 지원에 의해 수행되었음.

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