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.

Abstract
서 론
재료 및 방법
    1. 실험재료
    2. 식물재배 및 재배환경
    3. 수량 및 과실특성 조사방법
    4. 생육조사 항목 및 측정방법
    5. 엽병 즙액 내 양분 함량 측정 방법
    6. 통계분석
결과 및 고찰
초 록
사 사
Literature Cited

• 이혜원(국립한국농수산대학교 원예학부 연구원) | Hyewon Lee (Researcher, Department of Horticulture, Korea National University of Agriculture and Fisheries)
• 정효봉(농촌진흥청 국립원예특작과학원 채소과 농업연구사) | Hyo Bong Jeong (Research Officer, Vegetable Research Division, National Institute of Horticultural & Herbal Science, RDA)
• 이준구(전북대학교 농업생명과학대학 원예학과 교수) | Jun Gu Lee (Professor, Department of Horticulture, University of Agriculture & Life Sciences, Jeonbuk National University)
• 황인덕(부농종묘 육종연구소 소장) | Indeok Hwang (R&D Director, R&D Center, Bunongseed Co., Ltd.)
• 권덕호(국립한국농수산대학교 원예학부 교수) | Deok Ho Kwon (Professor, Department of Horticulture, Korea National University of Agriculture and Fisheries)
• 안율균(국립한국농수산대학교 원예학부 교수) | Yul Kyun Ahn (Professor, Department of Horticulture, Korea National University of Agriculture and Fisheries) Corresponding author