About This Journal

About This Journal

Horticultural Science and Technology (abbr. Hortic. Sci. Technol., herein ‘HST’; ISSN, 1226-8763), one of the two official journals of the Korean Society for Horticultural Science (KSHS), was launched in 1998 to provide scientific and professional publication on technology and sciences of horticultural area. As an international journal, HST is published in English and Korean, bimonthly on the last day of even number months, and indexed in ‘SCIE’, ‘SCOPUS’ and ‘CABI’. The HST is devoted for the publication of technical and academic papers and review articles on such arears as cultivation physiology, protected horticulture, postharvest technology, genetics and breeding, tissue culture and biotechnology, and other related to vegetables, fruit, ornamental, and herbal plants.

 

2021 Impact Factor 0.758

 

  • Research Article

    Growth and Yield of Potato (Solanum tuberosum) by Drench or Foliar Spray of a Microbial Agent AGN-LTE
    Byeong-Hwan Kim, Yong-Sun Moon, Kil Sun Yoo, Sang Gon Suh
    This study was conducted to investigate the effects of soil drench or foliar spray with a microbial agent, AGN-LTE, on growth and … + READ MORE
    This study was conducted to investigate the effects of soil drench or foliar spray with a microbial agent, AGN-LTE, on growth and yield of potato (Solanum tuberosum). To accomplish this, soil was drenched with 500 mL of AGN-LTE solution (30 mL stock·L-1) or leaves were sprayed with 50 mL plus 450 mL water drench Soil drench (500 mL) and foliar application at 30 days after planting and two additional times at 15 day increments. The foliage and tuber weights were measured and tubers were graded by size group and counted. Soil drenching with AGN-LTE treatment led to a significant increase in the number of potato tubers and tuber weight. Top fresh weight per plant increased significantly by 50.9% following soil drenching. In addition, the number of plants and tuber weight increased by 49.9% and 32.5%, respectively, following drench treatment. No significant differences were observed between the control and foliar spray treatment. Marketable yield and numbers of small and extra-small tubers increased significantly in response to drench treatment relative to the control and foliar spray treatments. Our results demonstrated that drench treatment with AGN-LTE could be used to promote potato tuber growth and yield during potato production. - COLLAPSE
    31 December 2022
  • Research Article

    Changes in Growth and Anthocyanin Content of Brassica juncea L. affected by Light Intensity and Photoperiod in Plant Factory with Artificial Lighting
    Hee-Sung Hwang, Hyeon-Woo Jeong, Jae-Ho Jeong, Dong-Hae Jo, Seung-Jae Hwang
    Recently, several studies have been conducted on crop production in plant factory with artificial lighting (PFAL) to prepare for climate change. Light … + READ MORE
    Recently, several studies have been conducted on crop production in plant factory with artificial lighting (PFAL) to prepare for climate change. Light is an important factor in improving crop productivity in PFAL. This study investigated changes in the growth and anthocyanin content of Brassica juncea L. (red mustard) under various light conditions. The seeds were sown on a urethane sponge and germinated at 9 days in a PFAL. After that, red mustard was cultivated at light intensities (150 or 300 µmol·m-2·s-1), and photoperiods (8/16, 12/12, and 16/8 h, light/dark). The length, width, and area of leaves were significantly greatest at 300 µmol·m-2·s-1 with a photoperiod of 16/8. At the higher light intensity and photoperiod, shoots of red mustard showed a darker red color. The total anthocyanin content showed the highest value at the light intensity of 300 µmol·m-2·s-1 and a photoperiod of 16/8. It was possible to produce red mustard with excellent growth and high anthocyanin content in a PFAL at a light intensity of 300 µmol·m-2·s-1 with a photoperiod of 16/8. - COLLAPSE
    31 December 2022
  • Research Article

    Light and Temperature Effects on the Color and Scent of Osmanthus fragrans ‘Houban Yingui’
    Xuan Cai, Jie Yang, Xiangling Zeng, Jing-Jing Zou
    External environmental factors affect the appearance of plants, specifically their color and aroma. To investigate the effects of environmental factors on the … + READ MORE
    External environmental factors affect the appearance of plants, specifically their color and aroma. To investigate the effects of environmental factors on the ornamental quality of Osmanthus fragrans, which has bright colors and a strong floral fragrance, the contents of characteristic flower color and aroma compounds under different light and temperature treatments were investigated in O. fragrans ‘Houban Yingui’. The content of the characteristic color compound β-carotene decreased after continuous light treatment and increased after continuous dark treatment, resulting in a paler color under light conditions and a deeper color under dark conditions. The volatiles of the flowers significantly decreased under both continuous light and continuous dark treatments, suggesting that the rhythm of alternating day and night may be more conducive to the synthesis and release of volatiles. In a low-temperature treatment, the contents of β-carotene decreased, resulting in a brighter color, while a high temperature may affect the flower color appearance by oxidation of phenolic compounds in addition to pigments. A high temperature accelerated flower senescence and promoted the release of cis-3-hexenyl butanoate and hexyl butanoate. A low temperature increased the release of trans-β-ionone, α-ionone, and many monoterpenes and corresponding oxides, which are aroma-active compounds of O. fragrans, resulting in a longer-lasting floral fragrance. The results here demonstrate that controlling the environmental conditions of the temperature and light can regulate the color and scent of O. fragrans. - COLLAPSE
    31 December 2022
  • Research Article

    Availability of Hydrogen Peroxide Solutions as a Germination Liquid Medium for Contamination-free in vitro Seedling Development of Cannabis sativa
    S. M. Ahsan, Jong Hwa Shin, Hyong Woo Choi
    Endophytic and seed-borne microbial attacks represent major barriers leading to poor regeneration- powered micro-propagation of Cannabis sativa. Thus, a reliable sterile … + READ MORE
    Endophytic and seed-borne microbial attacks represent major barriers leading to poor regeneration- powered micro-propagation of Cannabis sativa. Thus, a reliable sterile method during germination and in vitro plantlet preparation is important for the further successful micro-propagation of C. sativa plants. In the present study, we aim to develop a quick and efficient procedure for the preparation of pathogen-free plantlets using a hydrogen peroxide (H2O2) solution as a liquid germination medium. In this framework, all three phases, i.e., seed sterilization, germination, and early seedling development, were carried out in H2O2 solutions of varying concentrations (0, 1, 3, 5, and 10%). Among the different concentrations tested, the 1% H2O2 solution resulted in the fastest and the most successful germination for all tested genotypes of C. sativa seeds, in this case “Cheungsam,” “Cherry Blossom,” “Queen Dream,” and “Hot Blonde.” Higher concentrations of H2O2 (3, 5, and 10%) adversely affected the germination rate of C. sativa seeds compared to 0% or 1% H2O2. In addition, 5% and 10% H2O2 solutions significantly reduced seedling survival rates on MS media. Importantly, contamination rates of 88.4–96.7% were observed for C. sativa seedlings germinated with the 0% H2O2 solution and transferred to antibiotic-free MS media. However, a contamination rate of less than 4.0% was observed for seedlings prepared using 1% H2O2 as a germination medium. Moreover, the survival rates of seedlings germinated in 1% H2O2 were significantly higher than those of other seedlings. Our results suggest that a 1% H2O2 solution is a useful liquid germination medium for C. sativa seeds to enhance germination and survival rates while decreasing microbial contamination in antibiotic-free tissue culture media. - COLLAPSE
    31 December 2022
  • Research Article

    Identification of Juvenile Duration and Morphological Changes in Leaves and Stems after Transition to the Adult Phase in Native Trachelospermum in Korea

    자생 마삭줄의 유년성 기간 구명과 성년화에 따른 잎 및 줄기의 형태 변화

    Young Hyun Moon, Kuen Woo Park, O New Lee, Dam Hee Choi, In-Lee Choi, Ho-Min Kang

    문영현, 박권우, 이온유, 최담희, 최인이, 강호민

    This study was conducted to determine an index of phase changes in Trachelospermum jasminoides leaf and stem morphology and to identify the …

    본 연구는 자생마삭줄(Trachelospermum jasminoides)의 잎과 줄기의 형태적 변화를 통해 상변화 여부를 판단할 수 있는 지표를 설정하고, 상변화시까지 유년성지속기간을 구명하기 위하여 …

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    This study was conducted to determine an index of phase changes in Trachelospermum jasminoides leaf and stem morphology and to identify the timing of the juvenile-to-adult phase transition. Fifty percent of stems showed thigmotropism in the fall of the 5th year after sowing. In May of the 6th year, stems had adult leaves and 33% of the stems bloomed, indicating that the juvenile period for native T. jasminoides requires at least 5 years prior to blooming. As a result of a study targeting 13 regions in Korea to identify changes in the shape of leaves and stems during the juvenile and adult leaf phases, the leaf shape index of juvenile leaves was greater than that of adults in cultivation test districts and most (10) regions. Young leaves were lanceolate with distinct veins, whereas adult leaves were long and oval-shaped, with inconspicuous morphological changes. This study shows that juvenile and adult phases can be distinguished by the thigmotropism of stems, leaf vein pattern, relative size of leaves, and leaf shape index. This identification method could be adapted into an index to discriminate the juvenile and adult phases of the native T. jasminoides. According to a dendrogram and PCA, there was no clustering by region of harvest and the morphological elements in juvenile and adult leaves were similar. In addition, PCA showed that leaf area had the highest contribution rate among the first main components and could be used as an indicator for distinguishing the juvenile and adult phases of native T. jasminoides.


    본 연구는 자생마삭줄(Trachelospermum jasminoides)의 잎과 줄기의 형태적 변화를 통해 상변화 여부를 판단할 수 있는 지표를 설정하고, 상변화시까지 유년성지속기간을 구명하기 위하여 수행하였다. 유년성 지속 기간을 구명하기 위하여 온실에서 재배시험을 한 결과 파종 후 5년째 가을에 50% 개체의 줄기에서 감는 굴성이 나타났고, 6년째인 이듬해 5월에 성년형 잎이 출현하며 33% 개체가 개화하였다. 따라서 자생 마삭줄이 개화하기 위해서는 최소한 5년의 유년기간이 필요한 결과를 국내에서 처음 구명하였다. 상변환 전, 후의 잎과 줄기의 형태 변화를 구명하기 위해 국내 13 지역을 대상으로 조사한 결과 엽형지수는 대부분(10지역)지역에서 유년잎의 지수가 성년에 비해 더 큰 것으로 나타났다. 유년형 잎은 피침형으로 유백색 엽맥 무늬가 뚜렷하였으나 성년형 잎은 장타원형으로 엽맥 무늬가 뚜렷하지 않은 형태적 변화를 보였다. 엽면적은 전지역에서 상대적으로 성년형이 크게 나타났으며 엽두께는 성년형 잎이 유년형 잎보다 두꺼웠으나 유의차가 인정되지 않았다. 본 연구결과 자생 마삭줄은 줄기의 감는 굴성 여부, 엽맥무늬 여부, 엽의 상대적 크기, 엽형지수 등을 통해 유년상과 성년상을 구분할 수 있었다. 이러한 식별 방법은 자생마삭줄의 유년상과 성숙상을 판별하는 지표가 될 수 있을 것으로 판단되었다. 군집분석 및 주성분 분석 결과 채취 지역별로 군집화되지 않았으며, 마삭줄 유년기와 성년기 잎의 형태 요소가 유사하였다. 또한 제1주성분 중 가장 높은 기여율을 보인 엽면적이 자생 마삭줄의 성년상을 구분하는 지표가 될 수 있음을 알 수 있었다.

    - COLLAPSE
    31 December 2022
  • Research Article

    Characteristics of Bud Necrosis and Formation of Inflorescence Primordium in Young and Adult ‘Shine Muscat’ Grapevines

    유 · 성목 및 유 · 무핵 ‘샤인머스캣’ 포도 액아의 괴사 및 화원기 발생 특성

    Jun Young Park, Bo Min Kim, Myung Hee Jung, Hee-Seung Park

    박준영, 김보민, 정명희, 박희승

    This study aimed to investigate why empty branches occur in ‘Shine Muscat’ grapevines. Moreover, it also aimed to understand the bud characteristics …

    본 연구는 ‘샤인머스캣’ 포도에서 발생되는 빈가지 현상의 발생원인을 구명하고자 액아의 발달과 여러 괴사 유형 및 화원기의 발생을 조사하여 액아의 특성을 파악하였다. 화원기형성률은 …

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    This study aimed to investigate why empty branches occur in ‘Shine Muscat’ grapevines. Moreover, it also aimed to understand the bud characteristics of grapevines by examining bud development, the occurrence of various necrosis types and inflorescence primordium formation. The rate of inflorescence primordium formation was highest in September for young vines and in October for adult vines. In contrast, the rate was rather low in March of the following year. The rate of blooming during the flowering period of the following year was higher than the rate of inflorescence primordium formation during all investigation periods. This is likely because inflorescence primordia are continuously formed in accessory buds during environmental dormancy. However, several empty branches were found in both young and adult vines. According to the location of node, the necrosis rates of primary and accessory buds were high, and the rate of inflorescence primordium formation was low in the 1st node. Therefore, higher than medium pruning could increase grape yields. Leaves should be pruned up to the nodes before and after the 5th node, which has a relatively low rate of necrosis and a high rate of inflorescence primordium formation. Monthly comparisons showed that the rate of primary bud necrosis increased during the dormancy period, and the inflorescence primordium formation rate was lower in adult vines compared to in young and gibberellic acid (GA)-treated vines. There were no significant differences in bud characteristics among the branch lengths in both young and adult vines. However, it was determined that the branch length in GA-treated vines should be at least 80 cm in order to increase the rate of inflorescence primordium formation. In addition, if the thickness of the branch is either too thick or thin, it negatively affects the rates of necrosis and the formation of the inflorescence primordium. Therefore, it is advantageous to maintain the thickness of branches between the 3rd and 4th nodes to 8.5–11.5 mm for young vines and 10.0–11.5 mm for adult vines. Furthermore, longer and thicker branches in GA-treated vines were found to be more advantageous for the formation of inflorescence primordium.


    본 연구는 ‘샤인머스캣’ 포도에서 발생되는 빈가지 현상의 발생원인을 구명하고자 액아의 발달과 여러 괴사 유형 및 화원기의 발생을 조사하여 액아의 특성을 파악하였다. 화원기형성률은 유목은 9월 성목은 10월에 가장 높았으나 이듬해 3월의 화원기형성률은 오히려 낮았으며, 이듬해 개화기의 화수발생률은 모든 조사기간의 화원기형성률과 비교하여 높았다. 화원기형성률에 비하여 화수의 발생이 많은 것은 환경휴면 기간에 계속적으로 부아에서 화원기가 형성되었기 때문으로 생각되나, 그럼에도 불구하고 유목과 성목 모두 빈가지가 많이 발생하였다. 마디별 위치에 따른 액아의 특성은 1번액아에서 주아 및 부아괴사율이 높고 화원기형성률이 떨어지기 때문에 비교적 괴사율이 낮고 화원기형성률이 높게 조사된 5번 전후의 마디까지 남기는 중초전정 이상의 전정으로 포도를 재배하는 것이 수량 확보에 유리할 것으로 판단되었다. 월별 비교를 통해서 성목은 휴면기간 동안 유목과 GA 처리에 비해 주아괴사율이 증가하고 화원기형성률이 감소하는 것으로 조사되었다. 가지의 수세에 따른 액아의 발달은 유목과 성목 모두 가지의 길이에 따른 액아의 특성은 크게 차이가 없으나 GA 처리시에는 화원기형성률을 높이기 위해 가지길이를 최소한 80cm 이상으로 유지시켜 주어야 할 것으로 판단되었다. 또한 가지의 굵기가 너무 굵거나 얇으면 괴사율과 화원기 형성 측면에서 부정적인 영향을 미치기 때문에 3–4번 마디사이의 굵기가 유목은 8.5mm 이상 11.5mm 미만 정도가 유지되도록 하며 성목은 10.0mm 이상 11.5mm 미만 정도로 유지될 수 있도록 하는 것이 유리할 것으로 판단되었다. 반면에 GA 처리구의 경우 가지의 길이가 길어질수록, 굵기가 굵어질수록 화원기형성에 유리한 것으로 조사되었다.

    - COLLAPSE
    31 December 2022
  • Research Article

    Appropriate Amount of Nitrogen Fertilizer for Shading Cultivation of Tea Tree Seedlings

    차나무 유묘의 차광재배 적정 질소 시비량

    Doobo Shim, Seung Ho Jeon

    심두보, 전승호

    Nitrogen fertilizers are essential for productivity and quality improvement of all crops. However, excessive nitrogen can cause physiological disturbances. Therefore, depending upon …

    질소시비는 모든 작물에서 생산성 및 품질 향상에 반드시 필요하나 과잉시 생리장애가 발생할 수 있기 때문에 적정 시비량이 있으며, 작물별, 토양별, 재배방법에 따라 …

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    Nitrogen fertilizers are essential for productivity and quality improvement of all crops. However, excessive nitrogen can cause physiological disturbances. Therefore, depending upon the type of crop and cultivation method, controlling the amount of fertilizer is important. Typically, the proper amount of nitrogen fertilizer is determined by the organic matter content of the soil in which the plants (tea plants in our case) are grown. However, there is no difference in the amount of fertilizer applied during shading which leads to serious problems. The current study investigated the physiological activity of tea plants according to nitrogen concentration in oil cake during shading cultivation. The physiological activity expressed via photosynthetic ability showed that the photosynthetic ability remained steady without being significantly affected by nitrogen content up to 9 to 12% under non-shading conditions, whereas nitrogen excess disorder started to occur as the treatment period increased under shading conditions. After 3 weeks of treatment, the leaf chromaticity was the highest at 67.67 for 4.5% oil cake under shading condition, while the highest was 64.19 for 12% oil cake under the non-shading condition. In terms of inorganic nitrogen content in the soil, the NH4+-N content and the NO3-N content under shading were 1.3 times and 1.9 times higher, respectively than those for the non-shading condition. With increase in the nitrogen content of oil cake, the inorganic nitrogen (NO3N, NH4+-N) also increased.The total free amino acid content was 614 mg·100g-1 at 18% nitrogen content when not shading, and 1,073 mg·100g-1 at 18% nitrogen content when shading was the highest. There was a 2.0-fold increase for shading (401 mg·100g-1) compared to non-shading (200 mg·100g-1) that was not treated with oil cake. Overall, the total free amino acid showed a tendency to increase as the nitrogen content increased, but both non-shading and shading showed a relatively decreased tendency for the straight oil cake (N 12%) treatment. Considering the growth and component content, the most effective nitrogen fertilizer was oil cake with 9% nitrogen content for non-shading cultivation and 4.5% nitrogen content for shading cultivation.


    질소시비는 모든 작물에서 생산성 및 품질 향상에 반드시 필요하나 과잉시 생리장애가 발생할 수 있기 때문에 적정 시비량이 있으며, 작물별, 토양별, 재배방법에 따라 조절이 필요하다. 차나무의 재배 토양의 유기물 함량에 따른 적정 질소시비량은 정해져 있으나 차광재배시 시비량에 차이를 두지 않으며 과잉에 따른 문제가 발생할 수 있다. 본 연구는 차광재배시 유박의 질소 농도에 따른 차나무 생리활성을 알아보았다. 광합성능력을 통한 생리활성은 비차광의 경우 질소 함량이 9–12%까지 큰 영향을 받지 않고 꾸준한 광합성능력을 보이는 반면, 차광의 경우 처리기간이 길어질수록 질소과잉 장애가 발생하는 것으로 보였다. 처리 3주 후, 엽색도는 차광조건은 4.5% 유박에서 67.67로 가장 높았으며, 비차광조건은 12% 유박에서 64.19로 가장 높았다. 토양 내 무기질소 함량 변화는 차광조건이 비차광조건보다 암모늄태 질소는 1.3배, 질산태 질소는 1.9배 높은 함량을 보였다. 유박의 질소함량이 증가함에 따라 무기태질소(질산태, 암모늄태) 일반적으로 증가하는 경향을 보였다. 전체 유리아미노산 함량은 비차광시 질소함량 18%에서 614mg·100g-1, 차광시 질소함량 18%에서 1,073mg·100g-1으로 질소함량 18%에서 가장 높았다. 유박을 처리하지 않은 비차광(200mg·100g-1) 대비 차광(402mg·100g-1)에서 2.0배 증가하였다. 전체적으로 질소함량이 높을수록 증가하는 경향을 보였으나 비차광, 차광 모두 속효성 유박인 질소함량 12% 처리구에서 상대적으로 감소하는 경향을 보였다. 총 카테킨 함량은 차광 N-0에서 9.2%, 차광 N-4.5에서 9.17%로 가장 높았으며, 비차광 N-12에게 6.18%로 가장 낮았다. 생육 및 성분함량 등을 고려할 때 유묘 및 제한된 환경을 기준으로 비차광 재배시에는 질소함량 9%, 차광 재배시에는 질소함량 4.5% 유박을 시비하는 것이 가장 효율적 질소시비율로 사료된다.

    - COLLAPSE
    31 December 2022
  • Research Article

    Bioactive Content of Salvia plebeia R. Br. Enhanced by Pre-Harvest Exposure to Low Temperatures in a Closed-type Plant Production System
    Hyeon Woo Jeong, Hye Ri Lee, Ji Yeon Kang, Jeong A Jo, Seung Jae Hwang
    The study aim here is to discover a short-term low-temperature method before harvest that can increase the bioactive content of Salvia plebeia … + READ MORE
    The study aim here is to discover a short-term low-temperature method before harvest that can increase the bioactive content of Salvia plebeia R. Br. grown in a closed-type plant production system (CPPS) while maintaining the marketable quality of this herb. Salvia plebeia R. Br. was cultivated for 36 d in a CPPS with a deep floating technique and a recycling system. Low- temperature treatments (15°C) were applied for 1, 3, 5, 10, and 15 days prior to harvest (D1, D3, D5, D10, and D15). The fresh weights of the roots did not differ significantly among the low-temperature treatments. However, the leaf length, leaf width, leaf shape index and fresh and dry weights of the shoots decreased in D5, D10, and D15. The chlorophyll fluorescence decreased for up to three days of the low-temperature treatment and then increased after five days at the low temperature. The total phenolic and flavonoid contents were highest in D3. The findings here suggest that in order to increase the content of bioactive compounds without decreasing the growth of Salvia plebeia R. Br, exposing the plants to low temperatures three days before harvest is a viable strategy. - COLLAPSE
    31 December 2022
  • Research Article

    Optimization of the NPK Ratio for Vegetative Growth in Aeschynanthus longicaulis
    Min Deng, Qiansheng Li
    Aeschynanthus longicaulis is a gesneriad that can be grown as a hanging basket or indoor pot plant. Fertilization practice is rarely researched … + READ MORE
    Aeschynanthus longicaulis is a gesneriad that can be grown as a hanging basket or indoor pot plant. Fertilization practice is rarely researched in relation to the genus Aeschynanthus cultivation. This pot experiment is conducted on soilless media to optimize the best NPK ratio for the vegetative growth of A. longicaulis. Four fertilization levels (0, 1, 2, 3) were established for three factors of N, P, and K with 14 fertilizer treatments (“3414” fertilizer experiment design). The relationships between nutrient levels, plant growth, and tissue nutrient concentration were investigated. The results showed that increasing the NPK application concentration significantly improved plant growth. However, N had a more significant influence on the shoot growth and root/shoot ratio than P and K. The NPK ratio 3-1-2 is recommended for A. longicaulis vegetative growth on soilless media. - COLLAPSE
    31 December 2022
  • Research Article

    Photosynthetic Changes and Growth of Paprika Transplants as Affected by Root-zone Cooling Methods under High Air Temperature Conditions after Transplanting
    Byungkwan Lee, Minh Duy Pham, Jaewook Shin, Meiyan Cui, Hyein Lee, Jeesang Myung, Haeyoung Na, Changhoo Chun
    To overcome high mid-summer air temperatures in South Korea, the effects of two root-zone cooling (RZC) methods on the leaf photosynthesis and … + READ MORE
    To overcome high mid-summer air temperatures in South Korea, the effects of two root-zone cooling (RZC) methods on the leaf photosynthesis and growth of paprika transplants were investigated using a growth chamber. Paprika (Capsicum annuum L. cv. Scirocco) transplants grown in 20-cm pots filled with coir under a 14 h·d-1 photoperiod (from 5 am to 7 pm) were exposed to an air temperature of 39°C during the heating period (HP) from 11 am to 4 pm every day for 28 days. During the HP, the plants were irrigated with a chilled nutrient solution (15°C) for 3 min every hour as a nutrient solution cooling (NSC) treatment and chilled water (15°C) was circulated through the silicone pipes coiled around the root zones in a water circulation cooling (WCC) treatment. No cooling was provided for the No-cooling treatment. Root-zone medium temperatures in the NSC and WCC during HP decreased by 4°C and 8°C, respectively, compared to the No-cooling treatment. Twenty-eight days after the treatment, the root dry weight was 10-20% greater in RZCs compared to the No-cooling treatment, the root dry weight distribution was greatest, and the electrolyte leakage was lowest in the NSC. Leaf photosynthesis in both RZCs was 30% greater than in the No-cooling from a photosynthetic photon flux density of 250 µmol·m-2·s-1 during HP. The findings here indicate that NSC is more efficient than WCC and that it can alleviate the adverse effects of a high air temperature. Hence, it can be applied to improve paprika transplant production in greenhouses during the summer. - COLLAPSE
    31 December 2022
  • Research Article

    Effect of a Preharvest Peracetic Acid Treatment on the Natural Decay of Strawberries during Room-Temperature Storage
    Ung Yang, Min Kyu Kang, Minseok Ham, Seung Gon Wi, Bok-Rye Lee, Sang-Hyun Lee
    Gray mold is a postharvest disease that causes significant economic losses and limits the shelf life of strawberries. This study aimed to … + READ MORE
    Gray mold is a postharvest disease that causes significant economic losses and limits the shelf life of strawberries. This study aimed to assess the effect of a preharvest peracetic acid (PAA) treatment on the natural decay of strawberry fruits under room-temperature storage conditions similar to those during commercial operations in a retail market. The effect of the PAA pretreatment on disease development in strawberries artificially infected with Botrytis cinerea was also assessed. In vitro susceptibility tests revealed that mycelial growth and metabolic activity were inhibited by 50–250 ppm of PAA. A preharvest treatment with 200–800 ppm PAA significantly reduced the initial microbial load in strawberry fruits immediately after harvest by 0.3–0.9 log colony-forming units (CFU)/g. Moreover, 800 ppm PAA significantly reduced the natural decay of strawberry fruits, resulting in approximately 33% less spoilage compared to untreated fruits on day 5. The PAA pretreatment also reduced lesion development in strawberries artificially inoculated with B. cinerea in a dose-dependent manner. Treatment with 800 ppm PAA most effectively reduced microbial populations and delaying the natural decay of strawberry fruits during room-temperature storage. These findings indicate that PAA is feasible as an alternative strategy for maintaining the quality of fresh strawberries and controlling decay in these fruits during room-temperature storage. - COLLAPSE
    31 December 2022
  • Research Article

    Effects of Light and Temperature on the Long-term Storage of in vitro Gerbera Plantlets

    광과 온도처리에 따른 거베라 조직배양묘의 기내 장기 저장조건 구명

    Ho Jin Lee, Wan Soon Kim

    이호진, 김완순

    This study was carried out to determine the proper long-term storage conditions for healthy growth after acclimatization while minimizing the subculture in …

    본 연구는 거베라 조직배양에서 계대배양을 최소화하면서도 순화 후 건전 생육이 가능한 장기 저장 조건을 구명하고자 진행하였다. 거베라 조직배양묘를 온도 조건 2수준(4°C, 8°C), …

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    This study was carried out to determine the proper long-term storage conditions for healthy growth after acclimatization while minimizing the subculture in gerbera tissue cultures. in vitro gerbera plantlets were exposed to two levels of temperature (4°C, 8°C) and two levels of light conditions (light 30 µmol·m-2·s-1, dark 0 µmol·m-2·s-1). After storage with the light conditions set to 16 hours from 3 to 48 weeks, the chlorophyll fluorescence parameters and vitality as measured according to the plant height, leaf number, leaf chlorosis ratio, dry matter level, and shoot withering were observed. As a result, in the short-term storage condition of 12 weeks, the quality of the plantlets was well maintained in the light condition without a temperature difference of 4°C and 8°C. On the other hand, long-term storage conditions after 12 weeks, temperature (4°C < 8°C) and light both had a direct effect on whether the quality of the plantlets was maintained. in vitro low temperature storage was possible for up to 36 weeks under 8°C light conditions. It is concluded that commercial low temperature storage conditions are suitable for short-term (1–12 weeks) light conditions at 4°C and long-term conditions (12 weeks or more) at 8°C, leading to a survival rate of 90% or more and a leaf chlorosis ratio of 10% or less.


    본 연구는 거베라 조직배양에서 계대배양을 최소화하면서도 순화 후 건전 생육이 가능한 장기 저장 조건을 구명하고자 진행하였다. 거베라 조직배양묘를 온도 조건 2수준(4°C, 8°C), 광조건 2수준(광 30µmol·m-2·s-1, 암 0µmol·m-2·s-1)을 교호 처리하였다. 광조건은 16시간 일장으로 설정하여 3주에서 48주까지 저장 후 초장, 엽수, 황화율, SPAD값, 건물중 및 지상부 고사율 등 묘의 건전성과 엽록소 형광 매개변수들을 관찰하였다. 그 결과 12주 단기 저장조건에서는 4°C, 8°C 온도 차이 없이 광조건에서 묘의 품질은 양호하게 유지되었다. 반면 12주 이후 장기 저장 조건에서는 온도(4°C < 8°C)와 광이 묘소질 유지에 직접적인 영향을 나타냈다. 8°C 광조건에서 36주까지 정상적으로 기내 저온저장이 가능하였다. 결론적으로 상업적인 저온 저장 조건은 지상부 생존율 90% 이상, 황화율 10% 이내를 기준으로 단기(1–12주)는 4°C의 광조건에서, 장기(12주 이상)는 8°C의 광조건이 적합함을 확인하였다.

    - COLLAPSE
    31 December 2022