포도의 관능적 품질과 객관적 품질인자 상호간의 상관성

조순덕(Sun-Duk Cho),장민선(Min-Sun Chang),김동만(Dong-Man Kim),김건희(Gun-Hee Kim) 한국원예학회 2010 원예과학기술지 Vol.28 No.4

포도의 저장 중 소비자 관능평가와 실험에 의한 객관적품질인자간의 상관성을 통하여 포도 생산의 객관적 지표를 제시하고자 하였다. 포도를 3부위로 나누어 동일부위 절반은 관능검사에 사용하고, 나머지는 분석용 시료로 사용하여 품질요소 간 상관분석을 실시하였다. 저장 기간 중 포도의 이 화학적 품질특성 변화를 보면 가용성 고형물함량은 다소 증가하였으며, 저온저장보다 상온저장에서 더 많은 증가를 보였고, pH 및 적정산도는 저장 중 약간 감소하였으나 처리구간 큰 차이를 나타내지는 않았다. 포도의 객관적 품질평가인자 상호간에는 낮은 상관성을 보여 pH-가용성 고형물함량 간에는 정(+)의 상관을, 적정산도-가용성 고형물함량 및 pH-적정산도 간에는 부(-)의 상관을 보였다. 포도에 대한 관능평가 항목간의 상관성 분석결과, 신맛과 신맛을 포함한 단맛의 상관성이 0.933로 가장 높은 상관관계를 보였으며, 외관과 단맛과의 상관성이 0.619로 가장 낮았다. 전체적 기호도에 가장 높은 상관관계를 보이는 요인은 조직감(r²=0.890)으로 조사되었고, 그 다음이 신맛을 포함한 단맛(r²=0.860)이었다. 또한, 관능적인 품질평가 인자와 객관적인 품질인자 간의 상관성 분석결과, 전반적으로 매우 낮았으나 그 중 전체적 기호도에 대한 가용성 고형물함량의 상관성이 다소 높게 나타나, 소비자 관능평가 지표로써의 활용이 가능한 것으로 평가되었다. In order to find correlations between the sensory evaluation and instrumental analysis in ‘Campbell Early’ grape, grapes were divided into three parts. One-half parts were used for the sensory evaluation and the other half were used as samples for instrumental analysis. Relationship between sensory evaluation and instrumental analysis were studied through correlation study using 48-paired data set obtained during storage. Soluble solid content analysis showed that instrumental quality attributes increased along the passage of storage time with increasing temperature. pH and titratable acidity decreased slightly at lower storage temperatures. Correlations between instrumental quality attributes in grapes were found to be very low. Positive correlation was found between pH and soluble solid content, and negative correlation was found between pH and titratable acidity. The relation of sourness and sweetness to sourness was higher than other sensory evaluation factors, and the shape of the grapes was found to have little relation to their sweetness. Texture (r²=0.890) was found to be the most important factor in preference, followed next by sweetness with sourness (r²=0.860). The correlations between the sensory evaluation and instrumental quality attributes were found to be very low, with overall acceptability given to a relatively high content of soluble solid content. Correlations between pH and titratable acidity in terms of overall acceptability were found to be very low.

Effects of Supplemental Green LEDs to Red and Blue Light on the Growth, Yield and Quality of Hydroponic Cultivated Spinach (Spinacia oleracea L.) in Plant Factory

Nguyen Thi Phuong Dung(넨티덩),Tran Thi Thanh Huyen(트란티),Dong Cheol Jang(장동철),Il Seop Kim(김일섭),Nguyen Quang Thach(넨퀸탓) (사)한국생물환경조절학회 2020 생물환경조절학회지 Vol.29 No.2

본 연구는 폐쇄형 식물공장에서 시금치 수경재배시 세가지의 인공광이 생육, 광합성 및 품질에 미치는 영향을 규명하기 위해 수행되었다. 세가지 광 처리구는 적색 (660nm), 청색 (450nm) 및 녹색 (550nm) LED를 사용하여, R660 / B450 = 4/1 (RBL), R660 / B450 / G550 = 5/2/3 (WWL); R660 / B450 / G550 = 1/1/1 (WL) 비율로 혼합하였고, 동일한 광도로 설정하였다 (PPFD = 190 μmol‧m<SUP>-2</SUP>‧s<SUP>-1</SUP>). 생육조사결과 초장, 엽수는 WL이 가장 적었다. SPAD, 순광합성율, Fv/Fm, LAI, 근권부 생육은 RBL이 가장 높았고 통계적으로 유의하였다. 줄기, 잎, 뿌리의 생체중, 뿌리의 건물 중은 세가지 처리구에서 유의한 차이를 보였다. 대조적으로 WL의 칼륨의 함량은 WWL과 RBL 가운데 가장 높았지만, 반면 칼륨과 철의 함량은 RBL이 가장 높았다. 비타민C 함량도 시험구간 유의한 차이를 보였다. 질소와 옥살산 함량은 WL이 가장 높았고, 용해성 고체와 비타민C 함량은 RBL이 가장 높았다. 옥살산, 질소 함량은 WWL에서 감소하는 경향을 보였고, RBL의 옥살산 함량은 WL와 WWL과 차이가 없었다. 모든 처리구에서 Salmonella, E.coli. 는 감염되지 않았다. 결론적으로, RBL이 시금치의 생육에 적합하지만, 적색, 청색과 적정하게 혼합된 녹색광은 시금치의 생육에 긍정적인 영향을 미친다고 판단된다. The effect of three different light qualities on growth, photosynthesis, quality and safe parameters of hydroponic cultivated spinach (Spinacia oleracea L.) were investigated indoor. Three different light qualities were created of red (660 nm), blue (450 nm) and green (550 nm) LEDs corresponding at ratio R660/B450 = 4/1 (RBL); R660/B450/G550= 5/2/3 (WWL); R660/B450/G550 = 1/1/1 (WL), which were tested at the same intensity (PPFD =190 μmol m-2 s-1). The results showed that the plant height and leaf number were the lowest in WL treatment. The SPAD, Net photosynthesis rate Pn, Fv/Fm, Leaf area index LAI values and all parameters of root characteristics were the highest in RBL treatment and were significantly different from two others. Fresh weight of stem, leaf and root, dry weight of root in the three light qualities were significantly different. In contrast, the highest K<SUP>+</SUP> content in WL was different from WWL and RBL treatments, while Ca<SUP>2+</SUP> and Fe<SUP>2+</SUP> content were the highest in the RBL treatment. Vitamin C content was significantly different between the three treatments. nitrate and oxalic acid contents were the highest in WL treatment, whereas soluble–solids contents and vitamin C contents were the highest in RBL treatment. Oxalic acid, nitrate contents were observed tending reduced under WWL although oxalic acid content in RBL treatment was not different from WL and WWL treatments. In all three different light treatments were not detected Salmonella, E.coli. Our results suggest that RBL may be appropriate light for growth of spinach, but supplementary green light to a combination of red and blue LEDs at the reasonable rate can change the quality of spinach in a positive direction. Hydroponic cultivated spinach was safe for users.

단호박 "보짱" 장기저장을 위한 염소수 및 구연산 전처리 효과

박도수 ( D. S Park ),현재영 ( J. Y. Hyun ),권혜순 ( H. S. Kown ),정천순 ( C. S. Jeong ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2016 강원 농업생명환경연구 Vol.28 No.1

단호박 ``보짱`` 장기 저장을 위한 염소수 및 구연산 전처리 후 적정 저장온도를 구명하기 위한 연구결과는 다음과 같다. 중량손실은 염소수 처리구 보다는 구연산 처리구에서 다소 많았고, 저장온도는 7℃보다는 10℃에서 적었다. 부패율은 저장 2 개월째부터 부패하기 시작하였으며, 무처리구>염소수>구연산 순으로 나타났다. 저장온도별로는 7℃ 보다는 10℃에서 저장 5 개월까지 살균 처리구에서 2% 내외로 매우 낮게 나타났다. 가용성 고형물 함량은 구연산 보다 염소수에서 높게 유지되었고, 10℃보다는 7℃에서 높았다. 그리고 저장초기(약 14°Brix)부터 저장 4 개월째(약 17°Brix)까지는 증가한 다음 감소하는 경향을 보였다. 경도는 무처리구보다 염소수처리구가 단단하였고, 10℃ 보다는 7℃에서 높게 유지되었다. 과육의 색도는 살균 처리구 간에 차이가 없었고, 7℃보다는 10℃에서 다소 높게 유지되었다. 전분함량은 수확직후에는 약 20%에서 저장 1 개월째부터 감소하였고, 저장온도 및 살균처리구간에 차이는 없었다. 단호박의 당함량은 주로 비환원당인 sucrose 가 환원당인 glucose+fructose 함량보다 약 2 배 이상 많았다. 당함량은 구연산 처리구에서 타 처리구보다 감소폭이 많았고, 10℃ 저장보다는 7℃ 저장에서 높게 유지되었다. 총페놀함량은 저장기간 및 살균처리 구간에서 일정한 경향은 없었지만, 저장 6 개월까지 점증하는 경향을 나타냈다. This study was done to investigate proper long term storage temperature of squash ``Bochang`` after pre-treatment with NaOCl and citric acid. Weight loss was somewhat higher in citric acid treatment group than NaOCl treatment and it is lower in 7℃ than 10℃ treatment. Decay rate the loss percentage after 2 months, it appeared as Untreated > NaOCl > citric acid. In both sterilization treatment groups, storage at 10℃ is better than 7℃ and stored up to 5 months with very low difference of about 2%. Soluble solids content was higher in NaOCl treatment than citric acid and it was higher in 7℃ than 10℃. At the beginning of storage total soluble solids content (TSS) was about 14°Brix and 4 months after storage it was reached about 17°Brix and then a decreasing trend was observed. Higher firmness values were observed in NaOCl treatment than control and treatments in 7℃ were firmer than 10℃. No significant difference was observed among the sterilization treatments regarding flesh color, a slightly higher values were recorded in 10℃ than 7℃. Starch content immediately after harvest was about 20% and reduced after 3 months storage, no significant difference was observed in storage temperature and sterilization treatments. Squash sugar content is mainly non reducing sugar sucrose and reducing sugar (glucose+fructose) were about 2 times of the content. The decline in sugar content was higher in citric acid treatment than the others and it was higher in 7℃ than 10℃. Even though; there exist no certain data regarding total phenolic content during storage period and sterilization period, it showed a tendency to an increasing storage 6 months.

Compositional differences of Bojungikgi-tang decoctions using pressurized or non-

( Jung Hoon Kim ),( Chang Seob Seo ),( Seong Sil Kim ),( Hyeun Kyoo Shin ) 대한본초학회 2013 大韓本草學會誌 Vol.28 No.4

Objectives : In other to determine the optimal extraction conditions, the various Bojungikgi-tang (BJIGT) decoctions prepared by different pressure levels and different extraction times were compared and evaluated in terms of the extract yield and the total soluble solid content. Methods : Decoctions were prepared by the pressure levels of 0 (non-pressurized) and 1 kgf/㎠ (pressurized) for 60, 120 and 180 min. The extract yield and the total soluble solids content of decoctions were measured, and the amounts of the reference compounds in decoctions were investigated by the analysis using high performance liquid chromatography. Results : The extract yield and the total soluble solid content were higher in decoctions extracted by the pressurized method than those from decoction with non-pressurized method. The patterns of yield and contents showed a proportional increase to the extraction time. In analysis of the linear regression for four reference compounds such as liquiritin, nodakenin, hesperidin, and glycyrrhizin, the good linearity with the correlation coefficient more than 0.9999 was observed. The highest contents for four reference compounds were observed at 180 min of both the pressurized method and the non-pressurized method. Conclusions : This study suggests that the pressure in extraction method and the extraction time affect the compositional constituents in BJIGT decoctions. The extraction time of 180 min could be chosen in both pressurized and non-pressurized method as optimal extraction condition.

Compositional differences of Bojungikgi-tang decoctions using pressurized or non-pressurized extraction methods with variable extraction times

Kim, Jung-Hoon,Seo, Chang-Seob,Kim, Seong-Sil,Shin, Hyeun-Kyoo The Korea Association of Herbology 2013 大韓本草學會誌 Vol.28 No.4

Objectives : In other to determine the optimal extraction conditions, the various Bojungikgi-tang (BJIGT) decoctions prepared by different pressure levels and different extraction times were compared and evaluated in terms of the extract yield and the total soluble solid content. Methods : Decoctions were prepared by the pressure levels of 0 (non-pressurized) and 1 $kgf/cm^2$ (pressurized) for 60, 120 and 180 min. The extract yield and the total soluble solids content of decoctions were measured, and the amounts of the reference compounds in decoctions were investigated by the analysis using high performance liquid chromatography. Results : The extract yield and the total soluble solid content were higher in decoctions extracted by the pressurized method than those from decoction with non-pressurized method. The patterns of yield and contents showed a proportional increase to the extraction time. In analysis of the linear regression for four reference compounds such as liquiritin, nodakenin, hesperidin, and glycyrrhizin, the good linearity with the correlation coefficient more than 0.9999 was observed. The highest contents for four reference compounds were observed at 180 min of both the pressurized method and the non-pressurized method. Conclusions : This study suggests that the pressure in extraction method and the extraction time affect the compositional constituents in BJIGT decoctions. The extraction time of 180 min could be chosen in both pressurized and non-pressurized method as optimal extraction condition.

Compositional differences of Bojungikgi-tang decoctions using pressurized or non-pressurized extraction methods with variable extraction times

김정훈,서창섭,김성실,신현규 대한본초학회 2013 大韓本草學會誌 Vol.28 No.4

Objectives : In other to determine the optimal extraction conditions, the various Bojungikgi-tang (BJIGT) decoctions prepared by different pressure levels and different extraction times were compared and evaluated in terms of the extract yield and the total soluble solid content. Methods : Decoctions were prepared by the pressure levels of 0 (non-pressurized) and 1 kgf/cm2 (pressurized) for 60, 120 and 180 min. The extract yield and the total soluble solids content of decoctions were measured, and the amounts of the reference compounds in decoctions were investigated by the analysis using high performance liquid chromatography. Results : The extract yield and the total soluble solid content were higher in decoctions extracted by the pressurized method than those from decoction with non-pressurized method. The patterns of yield and contents showed a proportional increase to the extraction time. In analysis of the linear regression for four reference compounds such as liquiritin, nodakenin, hesperidin, and glycyrrhizin, the good linearity with the correlation coefficient more than 0.9999 was observed. The highest contents for four reference compounds were observed at 180 min of both the pressurized method and the non-pressurized method. Conclusions : This study suggests that the pressure in extraction method and the extraction time affect the compositional constituents in BJIGT decoctions. The extraction time of 180 min could be chosen in both pressurized and non-pressurized method as optimal extraction condition.

사과 쓰가루의 과대지가 과일의 특성에 미치는 영양

오수옥,이상현,조정안,김영,김월수 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

This study was conducted to investigate the effect of bourse shoots on the fruit growth and development, mineral content and quality of apples. Three hundred bourse shoots bearing fruits were selected from 10 trees randomly in the experimental orchard of Chonnam National University, Naju, Southwestern Korea. Bourse shoot length and fruit diameter were measured at twice on July 20 and August 20 of 2001. Harvested fruits were divided into 6 groups according to bourse shoot length; 0㎝, 11 to 20㎝, 21 to 30㎝, 31 to 40㎝, and longer than 41㎝. Fruit characteristics such as (soluble solid content, flesh firmness and acidity) were measures just after the harvest. The contents of Ca, Mg and K were analyzed of fruit peel, flesh and core tissues. Most bourse shoots stopped growing after late June, while water-sprouting shoots stopped after late July. Results showed that fruit L/D ratio was higher when bourse shoots were 31 to 40㎝ in length. Especially soluble solid content and fruit firmness were higher in the fruits of bourse shoot 21 to 30㎝ in length. Calcium contents of the fruits also were higher in flesh and skin tissues when length of bourse shoots was 21 to 30㎝, while no significant differences were observed in other mineral contents.

‘Shine Muscat’ 포도의 적정 착과량 및 수확기준 설정

김준혁,정명희,박요셉,이별하나,박희승 한국원예학회 2019 원예과학기술지 Vol.37 No.2

The aim of this study is to ascertain suitable harvesting time and yields for the development of colorchart for the establishment of harvesting standard based on the skin color of ‘Shine Muscat’ grapes. The experiment was conducted at an orchard in Cheonan, Gyeonggi-do, Korea and clusters per vinewere set to harvest 1,800 kg, 2,100 kg and 2,400 kg per 10 a. Even though the yield was increasedup to 2,400 kg per 10 a, there was no difference in the size of the fruit. However, with regard to fruitquality, grapes controlled to 2,400 kg per 10 a had lower soluble solids content, poorer coloring,higher acidity and hardness compared to other grapes controlled to 1,800 kg and 2,100 kg. Also, thechlorophyll content of grapes controlled to 2,400 kg per 10 a was higher compared to other grapes. Accordingly, for ‘Shine Muscat’ grape cultivation, it is considered that controlling the yield to lessthan 2,100 kg per 10a is effective in terms of fruit quality. Soluble solids content in grapes controlledto 1,800 kg and 2,100 kg per 10 a, exhibited a continuous increase with progress in ripening. Theacidity and soluble solid-acid ratio remained unchanged for about 110 days after full bloom. Also,the color stage reached the peak at 120 days after full bloom. Therefore, it is considered thatcontrolling the yield of ‘Shine Muscat’ grapes to within 2,100 kg per 10 a and harvesting 120 daysafter full are effective in meeting both productivity and fruit quality. To develop a color chart for thematured determination of ‘Shine Muscat’ grapes, the growing period was divided into 5 stages andbased on these stages; fruit quality and pigment content were compared. A color chart was made bydetermining the appropriate range of soluble solids content and acidity. 본 연구에서는 국내에서 재배되고 있는 ‘Shine Muscat’ 포도의 적정 착과량과 수확기를 구명하고, 과피색을 기준으로 한 숙기 판정용 칼라 차트를 개발하고자 하였다. 경기도 천안 소재 농가 포장에서 실험을 수행하였으며, 생산량은 10a당 1,800,2,100, 2,400kg으로 조절하였다. 10a당 2,400kg까지는 생산량이 증가해도 과실 크기에 차이가 없었으나, 과실 품질은 10a당188 Horticultural Science and Technology‘Shine Muscat’ 포도의 적정 착과량 및 수확기준 설정2,400kg 생산구가 다른 생산구에 비해 가용성 고형물 함량이 낮고 산 함량과 경도가 높으며 착색이 불량한 것으로 조사되었다. 엽록소 함량 또한 10a당 2,400kg 생산구가 다른 생산구에 비해 높게 조사되어, 고품질 과실 생산을 위해서는 ‘Shine Muscat’포도 재배 시 생산량은 10a당 2,100kg 이내로 조절하여야 할 것으로 생각되었다. 1,800kg 및 2,100kg 생산구의 시기별 과실 품질에 있어서 가용성 고형물 함량은 성숙이 진행될수록 계속해서 증가하였으며, 산 함량 및 당산비 모두 성숙이 진행될수록 계속 증가하다가 만개 후 110일 이후부터는 변화 없이 일정하게 유지되었다. 반면에 착색은 만개 후 120일에 최고치에 도달하였다. 따라서 ‘Shine Muscat’ 포도 재배 시 생산량을 10a당 2,100kg 이내로 조절하여, 만개 후 120일 이후에 수확하는 것이 생산성과 과실 품질을 동시에 충족시키는 데 효과적일 것으로 생각된다. ‘Shine Muscat’ 포도의 숙기 판정용 칼라 차트를 개발하기위해, 생육기를 5 단계로 구분하여, 이러한 단계들을 기준으로 과실의 품질과 색소 함량을 비교하였으며, 가용성 고형물 함량과 산 함량의 적정 범위를 구하여 칼라 차트를 작성하였다.

NaOCl Application and Curing in Winter Squash, ‘Bochang’ for Longer Storability

Jae Wook Lee,Kyung Seok Yoon,Alexander Joel G. Gibe 한국원예학회 2008 Horticulture, Environment, and Biotechnology Vol.49 No.3

Winter Squash (Cucurbita maxima D. cv. Bochang) procured from Hampyeong, Korea was pre-treated with NaOCl at 200 ㎎·L<SUP>-1</SUP> prior to curing. Cured squash fruits were immediately stored at 12℃. Stored squash fruits were monitored monthly for changes in quality that include color, firmness and soluble solid content. Other factors affecting quality such as weight loss and mold infection were likewise monitored. The study investigated the effects of NaOCl treatment and length of curing on the quality and longer storability of winter squash ‘Bochang’. Curing increased level of soluble solids content (SSC). ‘Bochang’ cured for ten days had the highest potential of increase in SSC at three months of storage. Increasing the number of days of curing for another 5 days sped up maturity and increase in SSC. However, increased SSC made the winter squash susceptible to fungal attack. Chlorination alone or in combination with curing is compatible in delaying rind yellowing. Firmness of the mesocarp was not affected by NaOCl application but curing re-increased firmness on the third month with consequent increase in SSC. Treatment with NaOCl completely controlled mold infection in ten-day cured ‘Bochang’ for three months resulting in a lower weight loss. Suppression of fungal infection in the succeeding months of storage led to reduced weight loss until 5 months. In another experiment, treatment with NaOCl immediately after harvest in combination with curing controlled fungal infection in contaminated ‘Bochang’ for at least two months was carried out. Subsequent delays in treatment warrant growth of both field and storage fungi within a month of storage. A 12-day delay in treatment renders NaOCl ineffective for long-term storage.

Effect of Different Rootstocks on Wilting Occurrence, Plant Growth, and Fruit Quality of Melon

Joo Hyun Lee(이주현),Joon Kook Kwon(권준국),Kyoung Sub Park(박경섭),Yun Chan Huh(허윤찬),Chai Il Lim(임채일),Dong Kum Park(박동금),Kwan Dal Ko(고관달) 한국원예학회 2009 원예과학기술지 Vol.27 No.2

무네트멜론 ‘홈런스타’와 네트멜론 ‘얼스엘리트’를 ‘강건토좌’, ‘신토좌’, ‘특토좌’, ‘조이너스’, ‘레인보우’, ‘에이스’, ‘엘리트’ 등의 7종류의 대목에 접목한 접목묘와 무접목묘를 공시하여 시듦증 발생, 생육, 수량, 과실당도, 유리당 함량 등을 조사하였다. 시듦증 발생은 ‘홈런스타’ 무접목묘 100%, 대목 ‘레인보우’ 83%, ‘엘리트’ 55%, ‘조이너스’ 22%, ‘신토좌’ 16%가 발생하였고 ‘강건토좌’, ‘특토좌’, ‘에이스’ 대목에서는 발생되지 않았다. ‘얼스엘리트’는 ‘레인보우’ 72%, ‘엘리트’와 ‘조이너스’에서 6% 발생하였으며, 다른 대목에서는 발생하지 않았다. ‘홈런스타’의 과중은 ‘강건토좌’, ‘신토좌’, ‘특토좌’ 대목에서 높고, ‘얼스엘리트’는 접목처리에서 높은 경향을 보여 ‘에이스’ 대목에서는 실생에 비해 과중이 28% 증가하였다. ‘홈런스타’ 과실의 가용성 당함량은 실생이 가장 높았으며, 시듦증 발생이 많았던 ‘조이너스’와 ‘레인보우’ 대목에서 유의적으로 함량이 낮았고, 다른 대목간에는 차이가 없었다. ‘얼스엘리트’의 가용성 당함량은 ‘에이스’ 대목에서 가장 높았고, 무접목묘, ‘특토좌’, ‘신토좌’, ‘강건토좌’ 대목 순으로 높았으며, ‘조이너스’, ‘레인보우’, ‘엘리트’에서 유의적으로 낮았다. ‘홈런스타’는 실생에서 ‘얼스엘리트’는 ‘에이스’ 대목에서 유리당 함량이 유의적으로 높게 나타났다. 환원성 당인 sucrose대비 비환원성 당인 glucose와 fructose의 합의 비율(S/G+F)은 홈런스타 대목재배에서 2.2-2.5, 실생재배 1.5로 접목재배가 실생에 비해 과실내 환원당인 glucose와 fructose의 비율이 낮은 경향을 보였다. 멜론 두 품종의 접목재배에서 시들음증 경감, 수량 및 과실 품질 등을 고려할 때, ‘홈런스타’는 ‘강건토좌’ 대목이 ‘얼스엘리트’는 ‘에이스’ 대목이 적합하였다. Key growing characteristics of melon cultivars, ‘Homerunstar’ and ‘Earl’s elite’ were investigated after they were grafted onto Cucurbita rootstocks ‘Gangguntozwa’, ‘Shintozwa’, ‘Teuktozwa’, ‘Joinus’, ‘Rainbow’, ‘Ace’, and ‘Elite’. Significantly different results were obtained in wilting incidence, plant growth, fruit quality and fruit yield depending on various rootstocks. No wilting symptom was observed when cultivar ‘Homerunstar’ was grafted onto ‘Gangguntozwa’, ‘Teuktozwa’ and ‘Ace’ rootstocks, whereas the symptom occurrence was 83, 55, 22, and 16%, respectively, when grafted onto ‘Rainbow’, ‘Elite’, ‘Joinus’, and ‘Shintozwa’. Occurrence of wilting symptom was 100% when the cultivar was grown without grafting. The occurrence of wilting symptom in cultivar ‘Earl’s elite’ was 6% when it was grafted onto ‘Elite’ and ‘Joinus’ rootstocks, whereas it was 72% when the cultivar was grafted onto ‘Rainbow’ rootstocks. The highest soluble-solid content (°Brix) was observed when cultivar ‘Earl’s elite’ was grafted onto ‘Ace’ or ‘Joinus’. When the cultivar ‘Homerunstar’ was grown without grafting, the soluble-solid content was 1 °Brix higher than that of grafted one; however, a higher ratio of sucrose to glucose+fructose (S/G+F) was observed in the fruit. Total fruit yield was higher when the two cultivars were grafted onto ‘Gangguntozwa’, ‘Shintozwa’, ‘Teuktozwa’, and ‘Ace’ rootstocks than those of non-grafted ones. These results suggest that the best rootstock for cultivar ‘Homerunstar’ is ‘Teuktozwa’ and for cultivar ‘Earl’s elite’ is ‘Ace’.