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.

 

 

  • Research Article

    Leaf Morpho-Anatomical Evaluation of Echeveria Cultivars using Different Fixation Methods
    My Khanh Thi Ha Tran, Raisa Aone M. Cabahug-Braza, Ki-Byung Lim, Yoon-Jung Hwang
    Echeveria succulent plants are among the most diverse ornamental plants belonging to the Crassulaceae family, showing increased demand in horticultural markets owing … + READ MORE
    Echeveria succulent plants are among the most diverse ornamental plants belonging to the Crassulaceae family, showing increased demand in horticultural markets owing to their rosette formation and high adaptability to water-stress environments. Owing to this level of demand and its desirable qualities, several studies have attempted to define environmental adaptation for this plant as well as its phenotypes and taxonomy, usually through leaf morpho-anatomical research. Leaf anatomical analysis has been widely employed to study these relationships; however, in the case of Echeveria, there are several barriers owing to their unique leaf structure, meaning that relatively few studies have been conducted. Several techniques use chemical fixation to investigate leaf anatomy; however, there are no universal methods due to equipment constraints and a lack of comparative studies. In this study, different fixation methods using formaldehyde, ethanol, and methanol were used to visualize the leaf morpho-anatomical structures of 15 Echeveria cultivars under light and scanning electron microscopy (LM and SEM), whereas freehand sectioning was used to obtain transverse sections. Each fixative had a different effect on each cultivar despite belonging to the same genus. Among the three fixation methods, methanol provided better preservation of the cell morphology as observed using LM and SEM. In addition, freehand sectioning is a cost-effective method that requires skill and patience, limited and affordable materials, and can be generally used without any sophisticated equipment. The results of this study provide a benchmark for future research employing simple and effective methods for related species that possess succulent leaf characteristics. - COLLAPSE
    30 April 2024
  • Research Article

    Determining Light Conditions for Improved Carrot Growth in a Closed-type Plant Factory
    Bohyun Sung, Nayoung Kwak, Young-Yeol Cho
    A plant factory refers to a cultivation method in which plants are grown in a completely controlled environment that is unaffected by … + READ MORE
    A plant factory refers to a cultivation method in which plants are grown in a completely controlled environment that is unaffected by external climate changes to establish and maintain optimal environmental conditions for crop growth, resulting in maximum productivity and quality. This study aimed to determine the optimal lighting conditions for cultivating carrots (Daucus carota L.) in plant factories. Carrots were grown using a system known as the NFT system for 33 d after transplantation, and the growth parameters investigated included the leaf area, shoot and root fresh weight, and dry weight. A carrot-specific nutrient solution was used, which was developed based on the appropriate content of macro elements in the plant (NO3-N:15.0, NH4-N:1.0, P:1.0, K:11.0, Ca:2.0, Mg:1.0, SO4-S:1.0 mM·L-1). The pH of the nutrient solution was maintained between 5.5 and 6.0, and the electrical conductivity was set to 1.0 dS·m-1 during the seedling stage and 1.5 dS·m-1 after transplanting. The lighting conditions were established by adjusting the ratios of red (R), green (G), and blue (B) light based on photosynthetic photon flux density. Four treatment groups were tested with R:G:B ratios of 4:0:6, 7:0:3, 6:0:4, and 6:1:3. The lighting cycle consisted of 12 h of light and 12 h of darkness, and the light intensity was maintained at a fixed value of 200 µmol·m-2·s-1. Leaf number and plant height values were significantly higher in the 6:0:4 and 6:1:3 treatments; however, there were no significant differences between them. Shoot and root fresh weights were significantly higher in the 6:0:4 and 6:1:3 treatments, whereas the shoot dry weight was highest in the 6:1:3 treatment. However, the root dry weight was highest in the 4:0:6 treatment. The total fresh weight was highest in the 6:0:4 and 6:1:3 treatments, whereas the total dry weight was highest in the 4:0:6 treatment. Overall, there were no statistically significant differences in the number of leaves, plant height, shoot and root fresh and dry weights, or total fresh and dry weights between the 6:0:4 and 6:1:3 treatment groups. Overall, these findings suggest that light ratios of 6:0:4 and 6:1:3 provide suitable lighting conditions for promoting optimal carrot growth in a controlled plant factory environment. - COLLAPSE
    30 April 2024
  • Research Article

    1-Methylcyclopropene Improves the Postharvest Physiological Characteristics and Fruit Quality of ‘Colorpple’ and ‘Manhong’ Apple Cultivars during Storage at Warm and Cold Temperatures
    Young-Soon Kwon, Jong-Taek Park, Jingi Yoo, Van Giap Do, Jeong-Hee Kim, Young Sik Cho, Sangjin Yang, In-Kyu Kang, Nay Myo Win
    Methods by which to realize the postharvest preservation of the new apple cultivars ‘Colorpple’ and ‘Manhong’ are unknown. Hence, the objective of … + READ MORE
    Methods by which to realize the postharvest preservation of the new apple cultivars ‘Colorpple’ and ‘Manhong’ are unknown. Hence, the objective of this study was to evaluate the effects of 1-methylcyclopropene (1-MCP) on the postharvest physiological characteristics and storage quality of ‘Colorpple’ and ‘Manhong’ apples. Harvested apples were treated with 1-MCP (1 µL·L-1) and stored for 40 days under warm temperature (20 ± 1°C) and for eight months under cold (0 ± 1 °C) temperature conditions. Untreated fruits were used as control groups. Ethylene production and respiration rates were lower in all treated fruits stored at a warm temperature. However, 1-MCP had minimal effects on flesh firmness, weight loss, or the soluble solid content (SSC), affecting only the titratable acidity (TA) at 40 days. Higher L* (20 and 30 days) and lower a* (30 and 40 days) values were observed only in the fruit skins of untreated ‘Colorpple’ apples. Additionally, skin greasiness increased in the untreated ‘Colorpple’ (30 and 40 days) and ‘Manhong’ (20 days) apples. Slight levels of fruit decay were observed in ‘Colorpple’ (30 days) and ‘Manhong’ (30 and 40 days). At a cold temperature, 1-MCP induced lower ethylene production and respiration rates and higher flesh firmness and TA in both cultivars, while weight losses as well as skin color and SSC changes were not detected. A lower SSC/TA ratio was observed in treated fruits after 6-8 months of storage. Moderate to severe skin greasiness was observed in both untreated apple types. Overall, this study suggests that a 1-MCP treatment improves the postharvest physiological characteristics and fruit quality of ‘Colorpple’ and ‘Manhong’ apples; 1-MCP is more effective for long-term storage of these cultivars at cold temperatures but is less effective at ambient temperatures. - COLLAPSE
    30 April 2024
  • Research Article

    Biomass and Ginsenosides Content of Ginseng Sprouts upon Exposure to Several White LED Lights with Different Correlated Color Temperatures and Color Rendering Indexes
    Yoon-Jeong Kim, Moon-Sun Yeom, Ji-Yoon Lee, Song-Yi Park, Myung-Min Oh
    Currently, white light-emitting diode (LED)-based light sources are widely used in vertical farms to improve energy efficient and price competitiveness, and white … + READ MORE
    Currently, white light-emitting diode (LED)-based light sources are widely used in vertical farms to improve energy efficient and price competitiveness, and white LED with various light spectra have been produced with the development of phosphor technology. In this study, we discussed the radiation effects of white LED with three different light spectra on the growth and the content of saponin and ginsenosides in ginseng sprouts grown in a vertical farm, specifically assessing the ratios of red, green, and blue light as well as the correlated color temperature (CCT) and color rendering index (CRI). Also, the light use efficiency (LUE) based on growth and the content of saponin and ginsenosides was calculated. For 5 weeks, one-year-old spring ginseng seedlings were cultivated in a vertical farm with three different white LEDs [cool white LED (CW), natural white LED (NW), and warm white LED (WW)]. Fluorescent lamps (FL) were used as a control. The shoot fresh weight, leaf area, stem length, and canopy photosynthetic rate increased as the ratio of red light increased. The total fresh weight was markedly high at WW and was 1.2 times higher than that of the FL treatment. The total saponin and total ginsenosides content were highest in WW and were 1.2 times and 1.3 times higher than those of FL, respectively. In the relationships among the total fresh weight, CCT, and CRI, the total fresh weight was increased with a lower CCT and a higher CRI. The total saponin and total ginsenosides content showed a similar trend according to the white LED light treatments. LUE based on the fresh weight and the content of saponin and ginsenosides were higher under all white LED treatments compared to the FL control group, and the LUE in the WW was 5 times higher based on the shoot fresh weight and 4.5 times higher based on the saponin and ginsenosides content compared to the FL. In conclusion, WW showed the highest performance among the treatments in terms of growth, the saponin and ginsenosides content, and the LUE. Therefore, the cultivation of ginseng sprouts under white LED with a high red light proportion and with a high CRI and low CCT in vertical farms is recommended. - COLLAPSE
    30 April 2024
  • Research Article

    FISH Mapping of Four Senna Species Revealing Genome Dynamics during Species Diversification of the Genus
    Thi Minh Phuong Dinh, Byung Yong Kang, Hyun Hee Kim
    Ploidy changes and chromosomal rearrangements significantly influence the chromosomal structure, which is a vital driver of speciation. The number and structure of … + READ MORE
    Ploidy changes and chromosomal rearrangements significantly influence the chromosomal structure, which is a vital driver of speciation. The number and structure of the chromosomal composition of Senna species has been reported to vary in several cytogenetic studies. Here, we report chromosome number and structure variations among four Senna species through the fluorescence in situ hybridization (FISH) technique, utilizing ribosomal DNA (5S, 45S rDNAs) and telomeric repeat probes. Four distinct chromosome numbers, 2n = 26, 28, 48, and 56, were observed in S. obtusifolia, S. pallida, S. aphylla, and S. artemisioides, respectively, with basic chromosome numbers of x = 12, 13, and 14, likely corresponding to two diploid species (S. obtusifolia, S. pallida) and two tetraploid species (S. aphylla, S. artemisioides). The 5S rDNA signals varied in terms of both the number and position, and the 45S rDNA signals showed greater variation in the numbers, which ranged from two to eight. S. obtusifolia was distinct from the other three species in that its telomeric repeat positions varied considerably. While S. artemisioides, S. pallida, and S. aphylla exhibited telomeric signals primarily in the terminal regions, S. obtusifolia displayed these signals in the terminal, interstitial, and pericentromeric regions. In addition, interstitial telomeric repeat signals were observed in S. pallida. Our study demonstrates the first use of triple-color FISH to unravel molecular cytogenetic information in these Senna species, providing evidence of the extensive chromosomal rearrangement that occurred during the diversification of the genus Senna. - COLLAPSE
    30 April 2024
  • Research Article

    Eucalyptus Species Selection for Superior Adaptability to Indoor-Outdoor Environments in South Korea
    Soo-Yeon Hyun, Byung-Jin Choi, Hyun-Sug Choi
    This study was initiated to examine suitable Eucalyptus species with high survival and acclimation rates among E. pulverulenta, E. cinerea, … + READ MORE
    This study was initiated to examine suitable Eucalyptus species with high survival and acclimation rates among E. pulverulenta, E. cinerea, E. globulus, E. websteriana, E. parvula, E. kruseana, E. cordata, E. polyanthemos, E. gunnii, and E. crebra, in South Korea where have not been conducted under both greenhouse and field conditions during the early tree growth stage. Germination at 70 days after sowing (DAS) was highest in E. crebra at 86.1%, followed by E. cordata (76.4%), E. globulus (68.1%), and E. pulverulenta (66.7%). E. cinerea and E. polyanthemos maintained seedling survival of 100.0% at 70 DAS, with the lowest survival observed for E. websteriana and E. kruseana (approximately 84‒85%). The tallest trees were observed in E. globulus at 141.7 cm, followed by E. polyanthemos and E. crebra at 150 days after transplanting (DAT); the smallest trees were detected in E. kruseana (33.7 cm) and E. parvula (38.6 cm), with conditions affecting the thickness of their trunks. The number of shoots was significantly higher in E. globulus and E. cordata at 150 DAT with highest number of leaves in E. parvula, followed by E. globulus, E. cordata, and E. crebra. Foliar SPAD was highest for E. gunnii at 150 DAT but lower for E. cinerea, E. globulus, and E. polyanthemos with light bluish and whitish green foliage. Leaf browning was negligible for all Eucalyptus spp. at 30 DAT but occurred considerably at 150 DAT during early winter, with E. kruseana at approximately 45%, E. polyanthemos at 21%, and E. parvula at 20%. The dry mass of the leaves, shoots, and roots of each species was highest for E. globulus at 107.7 g, followd by E. polyanthemos and E. crebra, and was lowest for E. cinerea and E. websteriana. A thicker trunk significantly increased the tree height (r2 = 0.7779), total dry weight (r2 = 0.7987), root dry weight (r2 = 0.7194), and number of leaves (r2 = 0.1963). - COLLAPSE
    30 April 2024
  • Research Article

    Effects of Soil Moisture Content Variations on Fruit Quality and Tree Stress in Satsuma Mandarin ‘Miyagawa Wase’ during Porous Sheet Mulching Cultivation
    Nam-Ho Kang, Jung-A Lee, Sook-Young Park, Seok-Beom Kang, Sang-Heon Han
    This study, focusing on porous sheet mulching cultivation for high-quality and annual steady production of Satsuma mandarin, investigated trees photosynthetic oxidation stress … + READ MORE
    This study, focusing on porous sheet mulching cultivation for high-quality and annual steady production of Satsuma mandarin, investigated trees photosynthetic oxidation stress according to the soil moisture in the porous mulching cultivation. Leaf, vesicle tissue water status, chlorophyll fluorescence, plant hormone abscisic acid (ABA) and jasmonic acid (JA) activity were measured using a phychrometer sample chamber, potable fluorescene meter and UHPLC and MS/MS were measured. Leaf water potential fluctuated according to the change in soil moisture content between the non-sheet mulching (control) and restoring the porous sheet (mulching) groups throughout this experiment period, and about 2 weeks intervals drip irrigation after the mulching (Mul. + Drip). In September, the leaf water potential of the control (‒0.9 ~ ‒1.3 MPa) was higher than that of the mulching (‒2.5 ~ ‒2.7 MPa), and Mul. + Drip (‒2.2 ~ ‒2.3 MPa) groups. In October, due to continuous dry weather, the results of control and mulching were ‒3.0 MPa and ‒4.0 MPa or below respectively, which were lower than Mul. + Drip (‒2.64 MPa). The water potential of vesicle tissue also fluctuated similarly to that of the leaf water potential. The osmotic potential was tendentially higher in the control than that in mulching and Mul. + Drip group. The turgor pressure remained constant at 0.5 MPa in October and November except for the time in September. The soluble solids content (SSC) of fruit at harvest was higher at 14.55°Brix in the mulching and 13.96°Brix in the Mul. + Drip, which were both higher than 11.05°Brix in the control, showing a significant difference and confirming a rise in the SCC caused by osmotic control. The degree of oxidative damage according to water stress level caused by drought stress was investigated by the comparison of the maximum quantum efficiency value of (Fv/Fm), the initial fluorescence value (Fo) value, and the change in photosynthetic rate. The concentration of ABA in the leaf, fruit peel, and flesh was relevant to the leaf moisture stress and fruit sugar content. The concentration of JA varied as the concentration of ABA changed. In conclusion, Fv/Fm and Fo of chlorophyll PSII and ABA regarding photosynthetic oxidative damage were found to be indicators of the degree of damage according to tree water stress levels. - COLLAPSE
    30 April 2024
  • Research Article

    Growth and Photosynthetic Responses of Taraxacum coreanum Nakai Seedlings according to the Shading Levels

    차광수준에 따른 흰민들레묘의 생육과 광합성 반응

    Jae Hwan Lee, Sang Yong Nam

    이재환, 남상용

    Taraxacum coreanum, a member of the Asteraceae family, is endemic to Korea and has high potential as a medicinal crop. However, …

    국화과(Asteraceae)에 속한 흰민들레(Taraxacum coreanum)는 우리나라에 자생하는 고유종이다. 흰민들레는 약용작물로써의 잠재력은 높으나 재배방법이 명확하게 확립되지 않아 대량생산을 위한 육묘 방법에 대한 …

    + READ MORE
    Taraxacum coreanum, a member of the Asteraceae family, is endemic to Korea and has high potential as a medicinal crop. However, as the cultivation method for T. coreanum has not been clearly established, it is necessary to discuss the proper method by which to raise seedlings. In this study, the effects of the shading levels on growth and photosynthetic responses of T. coreanum were investigated. The shading treatment in this study had five levels: 35, 45, 60, 75, and 99%, respectively, designed with polyethylene shade films. The plant height, plant width, leaf length, and leaf width were highest with the 75% shading level, while the root length, root fresh weight, and dry weight tended to increase as the shading level decreased. The fresh and dry weights of the shoots were highest at the 60–75% shading levels. PIABS, representing the performance index on an absorption basis, was highest at 7.13 at the 60% shading level, showing a trend similar to that of the fresh weight and dry weight of the shoots. The maximum quantum yield of PSII (Fv/Fm) was 0.83–0.84 at shading levels of 35–75%, but it decreased to 0.74 at the 99% shading level. ΦDo, ABS/RC, and DIo/RC showed equal significance levels from shading levels of 35–75% and belonged to the normal range. However, these indicators of stress were highest at the 99% shading level, indicating that setting an excessively high shading level could significantly inactivate the reaction center of PSII. In conclusion, for the cultivation of T. coreanum under different shading levels, it is recommended to utilize shading levels of 60–75% to enhance the shoot sizes and fresh and dry weights significantly. Additionally, for significant enhancements in root length and growth, it is recommended to use shading levels of 35–75%, specifically excluding the 99% shading level.


    국화과(Asteraceae)에 속한 흰민들레(Taraxacum coreanum)는 우리나라에 자생하는 고유종이다. 흰민들레는 약용작물로써의 잠재력은 높으나 재배방법이 명확하게 확립되지 않아 대량생산을 위한 육묘 방법에 대한 논의가 필요하다. 이에 본 연구에서는 차광처리가 흰민들레묘의 생육수준과 광합성 반응에 어떤 영향을 미치는지에 대해 조사하였다. 차광수준은 폴리에틸렌 필름을 활용하여 각각 35, 45, 60, 75, 99%의 다섯 단계로 나누어 적용하였다. 결과에서 초장, 초폭, 엽장, 엽폭과 같은 식물체의 지상부 크기는 75% 처리구에서 가장 우수했던 것으로 나타났다. 그러나 이와 반대로 뿌리의 길이, 뿌리의 생체중과 건물중은 차광수준이 낮아질수록 반비례하여 높아지는 경향을 나타내었다. 한편, 지상부 생체중과 건물중은 60–75% 차광수준에서 가장 높았던 것으로 나타났으며, 성능지수를 나타내는 엽록소 형광 매개변수인 PIABS 또한 이와 유사하게 60% 처리구에서 7.13로 가장 높게 나타났다. 광계II의 최대 양자 수율을 나타내는 매개변수인 Fv/Fm은 35–75% 차광수준 내에서 0.83–0.84 수준으로 나타나 정상범위에 속하는 것으로 평가되었으나 99% 차광수준에서는 0.74로 상반된 결과를 나타내었다. 스트레스 지표로 활용되는 형광 매개변수인 ΦDo, ABS/RC, DIo/RC는 35–75%의 차광수준까지 동등한 유의수준을 나타내었으며 정상범주에 속하는 것으로 평가되었다. 그러나 99% 차광수준에서는 가장 높게 나타나 과도하게 높은 차광수준은 광계II의 반응중심의 일부를 불활성화 시키는 것으로 보인다. 결론적으로 흰민들레묘를 차광육묘할 때 지상부의 생육에 중점을 두는 경우 60–75% 차광수준에서 재배할 것을 권고하며, 지하부의 경우 99% 차광수준을 제외하고 35–75%의 차광수준에서 육묘가 가능한 것으로 판단된다.

    - COLLAPSE
    30 April 2024
  • Research Article

    Light Environment Analysis and Production of Red Leaf Lettuce in Greenhouses with Flexible Solar Cells

    유연기판 태양전지가 설치된 온실 내의 광분포 분석 및 적상추의 생산

    Eunjeong Lim, Gyeong-Su Seo, Inha Hwang, Il-Kyung Shin, Myung-Min Oh

    임은정, 서경수, 황인하, 신일경, 오명민

    Recently, agrivoltaic systems, which utilize a solar-sharing conception by having solar cells installed on top of the cultivation area, using the extra …

    최근 작물 재배면적 상부에 태양전지를 설치하여 잉여의 태양광을 에너지 발전에 사용하는 solar sharing 개념의 영농형 태양광발전 시스템이 주목을 받고 있다. 하지만 대부분의 …

    + READ MORE
    Recently, agrivoltaic systems, which utilize a solar-sharing conception by having solar cells installed on top of the cultivation area, using the extra solar light for photovoltaics, have been attracting attention. However, most applications are reported in open-field conditions, and some issues have been raised about the installation of these structures. Accordingly, we conducted a cultivation experiment in which an agrivoltaic system was applied to protected horticulture with flexible solar cells. Red leaf lettuce was used in the experiment and was cultivated in three single greenhouses with the system installed either on one side of the greenhouse ceiling, denoted as photovoltaic I, or on both sides denoted as photovoltaic Ⅱ. The control system used no agrivoltaic system. A ray-tracing simulation was also conducted to determine the light distribution of the total greenhouse floor area and daily difference according to solar altitude changes. It was found that the monthly amounts of energy generated in the greenhouses were 156.85 and 323.34 kWh for photovoltaic Ⅰ and photovoltaic Ⅱ, respectively. Due to the area shaded from light by the solar cells, daily light integral (DLI) values were 86% of the control for photovoltaic Ⅰ and 71% for photovoltaic Ⅱ. In the results of the ray-tracing simulation under identical conditions, the root mean square error between the calculated DLI and the measured DLI was 14.8 µmol·m-2·day-1. The shoot fresh weight, leaf area, SPAD and anthocyanin content of red leaf lettuces showed no significant differences according to the treatment. Through this study, it was confirmed that greenhouses with flexible solar cells can be applied for the production of leafy vegetable such as lettuce with low light saturation points.


    최근 작물 재배면적 상부에 태양전지를 설치하여 잉여의 태양광을 에너지 발전에 사용하는 solar sharing 개념의 영농형 태양광발전 시스템이 주목을 받고 있다. 하지만 대부분의 적용은 노지재배이며 태양전지 설치를 위한 구조물에 따른 문제점이 대두되면서 본 연구에서는 유연기판 태양전지를 활용하여 영농형 태양광발전 시스템을 시설원예로 적용하기 위해 재배실험을 수행하였다. 실험에는 적상추가 사용되었으며 태양전지가 온실 천장의 한 면에만 설치된 태양광Ⅰ, 두 면 모두에 설치된 태양광Ⅱ 그리고 설치되지 않은 대조구의 세 단동 아치형 비닐하우스에서 재배되었다. 또한 온실 내부 면적 전체의 광량 및 태양고도 변화에 따른 일중 변화를 위해 시뮬레이션상에 온실 조건을 구현하여 광추적 시뮬레이션을 수행하였다. 두 처리구 온실에서의 월별 발전량은 태양광Ⅰ, 태양광Ⅱ에서 각각 평균 156.85kWh, 323.34kWh였다. 태양전지에 의한 차광으로 인해 온실 내부에서 측정된 DLI값은 대조구 대비 태양광Ⅰ에서 86%, 태양광Ⅱ는 71%를 보였으며, 동일한 조건에서 광추적 시뮬레이션 결과 DLI값은 측정값과 14.8µmol·m-2·day-1의 평균제곱근오차를 기록했다. 재배 결과 지상부생체중, 엽면적, SPAD, 안토시아닌 함량과 같은 전 항목에서 처리에 따른 통계적 유의성을 보이지는 않았다. 이를 통해 유연기판 태양전지가 설치된 온실에서의 상추과 같은 광요구도가 낮은 엽채류 생산이 가능함을 확인하였다.

    - COLLAPSE
    30 April 2024
  • Research Article

    Response of Fruit Growth and Quality to the Spray of Plant Growth Regulator in Yellow-fleshed Kiwifruits

    황색과육 키위프루트에서 식물생장조정제 살포에 의한 과실 생장 및 품질의 반응

    Ha yeon Jeon, Eun Ui Oh, Kwan Jeong Song

    전하연, 오은의, 송관정

    This study was conducted to investigate the effect of the number of spray applications of a plant extract (Benefits®PZ) on …

    본 연구는 식물추출물인 생장조정제(Benefits®PZ) 살포 횟수에 따른 키위프루트 과실의 생장과 품질에 미치는 영향을 알아보고자 수행되었다. 제주지역에서 주로 재배되고 있는 황색과육의 …

    + READ MORE
    This study was conducted to investigate the effect of the number of spray applications of a plant extract (Benefits®PZ) on the growth and quality of kiwifruit. Single, double, and triple spray applications from two weeks to four weeks after anthesis were compared with a control to test ‘Sweet Gold’ and ‘Jecy Gold’ which are major varieties with yellow-flesh grown on Jeju Island. In both cultivars, as the number of spray applications was increased, the fruit size increased, as did the fruit length, diameter, and fruit weight, with deterioration of fruit quality parameters such as the dry matter and flesh color not observed. The increased fruit size was associated mainly with the enlargement of the fruit core and outer pericarp tissues, which in turn was associated with increases in both the cell number and size of fruit core tissue, but also with increases in the number of small cells and the sizes of the large cells from the outer pericarp tissue. There was little effect of the plant growth regulator spray treatments on the fruit quality during room temperature storage, and yellow-flesh coloration tended to be even higher in the treated than in the untreated case. The starch contents were not affected by plant growth regulator spraying at 150 days after full bloom (DAF), at which starch accumulation was maximized, in both cultivars. However, As the treatment period prolonged, differences began to emerge and continued to widen over time. The content of soluble sugars began to increase rapidly at 120 days DAF and showed differences between treatments around 170–180 DAF, but the tendency of those responses was not distinct depending on cultivars. Consequently, the findings here indicated that the plant extract (Benefits®PZ) spray contributed to an increase in the fruit size and affected the cell number and size, with no detrimental side-effects on the fruit quality. The response of starch and soluble sugars content to spraying differed between the two cultivars, and no distinct tendency was observed.


    본 연구는 식물추출물인 생장조정제(Benefits®PZ) 살포 횟수에 따른 키위프루트 과실의 생장과 품질에 미치는 영향을 알아보고자 수행되었다. 제주지역에서 주로 재배되고 있는 황색과육의 국내육성 키위프루트 품종인 ’스위트골드’와 ‘제시골드’를 대상으로 하여, 식물생장조정제 살포 처리 1회, 2회 및 3회와 무처리(대조구)에 대해 비교하였다. 두 품종 모두 처리 횟수가 증가할수록 과실 종경, 횡경 및 과중이 증가하여 과실 크기가 커졌고, 건물률, 과육 색도(hue) 등 품질 요인의 저하는 나타나지 않았다. 과실 크기의 증가는 주로 과심과 과피 바깥 조직의 크기 증가와 관계되며, 과심에서는 세포 수 및 크기 증가와 관계되나, 과피 바깥 조직에서는 소세포의 수적 증가 및 대세포의 크기 증가와 관계되는 것으로 나타났다. 식물생장조정제의 처리에 의한 상온저장에서 과실 품질에 미치는 영향은 거의 없었고, 오히려 처리구에서 무처리에 비해 과육의 황색발현이 높은 경향을 보였다. 전분 함량에 있어서 최고치에 이르는 만개 후 150일까지는 두 품종 모두 처리 간에 차이가 없었으나, 이후 처리 간에 함량 차이를 보이기 시작한 후 계속 증가하였다. 가용성 당의 함량은 만개 후 120일에 급격히 증가하기 시작하였고, 만개 170–180일 경에는 처리간 함량 차이가 커지는 경향이었으나, 처리에 따른 품종간 반응이 일정하지 않았다.본 연구 결과 식물추출물인 식물생장조정제 살포가 과실의 세포 수와 크기에 영향하여 과실 생장을 증가시켰으며, 다른 품질 요인의 저하 영향은 없었다. 전분 함량 및 가용성 당 함량에 대한 영향에 있어서는 품종간 반응이 달랐으며, 일정한 경향을 보이지 않았다.

    - COLLAPSE
    30 April 2024
  • Erratum