首页期刊导航|Korean Journal of Horticultural Science & Technology
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Korean Journal of Horticultural Science & Technology
Korean Society for Horticultural Science
Korean Journal of Horticultural Science & Technology

Korean Society for Horticultural Science

1226-8763

Korean Journal of Horticultural Science & Technology/Journal Korean Journal of Horticultural Science & TechnologySCI
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    Regional Differences in Onion Bulb Quality and Nutrient Content, and the Correlation Between Bulb Characteristics and Storage Loss

    Lee, JongtaeHa, InjongKim, HeedaeChoi, Silim...
    11页
    查看更多>>摘要：Many onion growers and researchers assert that differences in soil type, agricultural practices, weather, and duration of prolonged onion cultivation in a particular field could affect onion bulb quality. This study evaluates the bulb quality of onions grown in different regions and determines the correlations between bulb characteristics and postharvest loss during cold and ambient storage. Soil and onion bulbs were collected from fields in six onion growing regions in Korea, during the growing season of 2011-2012. The fresh weight, dry matter content, and carbon (C), sulfur and magnesium contents of the onion bulbs were significantly affected by the location in which they were grown. Bulbs grown in Muan had the greatest number of scales, thinnest scale thickness, and the highest total soluble solids (TSS) and total fiavonoids (TF). Bulbs originating from Jecheon had the lowest pyruvic acid (PA), total phenolics and TF. Storage loss of bulbs from the different regions was similar in refrigerated storage, but differed in ambient temperature storage. Bulb fresh weight was positively correlated with scale thickness (r = 0.617) and cold storage loss (CSL; r = 0.398). Dry matter content was positively correlated with C (r = 0.958) and TF (r = 0.256) contents, while it was negatively correlated with CSL (r = -0.424). CSL was primarily affected by the fresh weight, as well as the dry matter, C, and PA contents of the bulbs, while ambient storage loss was primarily influenced by the amount of TSS.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Effect of Salinity Stress on Growth, Yield, and Proline Accumulation of Cultivated Potatoes (Solanum tuberosum L.)

    Im, Ju SungCho, Ji HongCho, Kwang SooChang, Dong Chil...
    12页
    查看更多>>摘要：This study evaluated the responses of 18 potato cultivars to three levels of salinity stress (electrical conductivity, EC: 1.0, 4.0, and 8.0 dS.m(-1)). Stem, leaf, root, chlorophyll, tuber yield, and proline content were investigated and statistically analyzed using analysis of variance (ANOVA) and correlations. Stem number and stem diameter were not affected by salinity, but stem length and aerial weight showed highly significant responses to salinity. Aerial weight decreased with increasing salinity levels in most cultivars, while it increased in some the cultivars 'Daejima', 'Goun', 'Haryeong', and 'LT-8'. Leaf number, leaf area index, and leaf weight were most significantly affected by salinity and the cultivar x salinity interaction. Root length, root weight, total chlorophyll and chlorophyll a were affected by salinity, but not by the cultivar x salinity interaction. The opposite trend was shown in chlorophyll b. Although there was great variability among cultivars, tuber yield decreased in all cultivars, and was most significantly influenced by salinity and the cultivar x salinity interaction. 'Superior', 'Kroda', 'Romana', and 'Duback' gave better tuber yields under salinity at EC 4.0 and 8.0 dS.m(-1) than the cultivars with better aerial weights. Proline content was increased by salinity in all cultivars, and was more remarkable in the cultivars with better aerial weights than in cultivars such as 'Superior' and 'Kroda' with better tuber yields. Leaf number, leaf area index, leaf weight, and root length parameters were considered to be useful criteria in the evaluation of salt tolerance because of their high positive correlation with tuber yield; however, given its negative correlation with tuber yield under high salinity, proline content was not.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Germination of Hemerocallis Seeds as Influenced by Seed Development and Temperature Treatments

    Kim, Ji HeeSuh, Jeung KeunLee, Ae Kyung
    10页
    查看更多>>摘要：Germination of Hemerocallis seeds as influenced by cold stratification at 5 degrees C (CS) and maturity of seeds evaluated using X-ray imaging has not been well investigated. Seeds of H lilioasphodelus, H citrina, H citrina 'April Flower', and H minor collected from China and H thunbergii collected from Korea were germinated at 20 degrees C without pre-temperature treatment, while H. hongdoensis, H. dumortieri, H minor, and H. vespertina seeds were treated with CS. Harvesting 'Stella de Oro' capsules at 35-40 days after anthesis yielded mature seeds with well developed embryo and cotyledons analyzed by X-ray images with a 92% germination in 17 days after sowing. Seeds of H. thunbergii and H. citrina germinated in less than 13 days without CS; two weeks of CS did not accelerate seed germination. Seeds of H. hongdoensis germinated in 24 days when seeds were stored at 25 degrees C without CS and in less than 27 days when cold stratified. Therefore, 'Stella de Oro' capsules should be harvested at 35-40 days after anthesis to harvest mature seeds. Cold stratification is not required to accelerate seed germination in the Hemerocallis taxa evaluated in this study.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Theoretical Design for the Production of Quinoa (Chenopodium quinoa Willd.) in a Closed Plant Factory

    Bae, Jong HyangAustin, JirapaJeon, Yoon-ACha, Mi-Kyung...
    5页
    查看更多>>摘要：Quinoa (Chenopodium quinoa Willd.) is a grain crop with high nutritional value. The leaves and sprouts of quinoa can also be consumed either raw or cooked, providing considerably nutritional value as well as high antioxidant and anticancer activities. This study was carried out to obtain basic data to assist in the practical design of a plant factory with artificial lighting for the cultivation of quinoa as a leafy vegetable. We estimated the energy content of the quinoa and the electrical energy required to produce this crop. The yield was 1,000 plants per day, with a planting density and light intensity of 0.015 m(2) (15 x 10 cm) and 200 mu mol.m(-2).s(-1), respectively. The total number of plants, cultivation area, and electricity consumption were estimated to be 25,000, 375 m2, and 93,750 mu mol.s(-1), respectively. White fluorescent lamps were used at a power of 20.4 kW from 1,857 fluorescent lamps (FL, 55 W), and the cost for electricity was approximately 1,820 dollars (exchange rate of $1 = 1,200 won) per month. For a daily harvest of 1,000 plants per day in a closed plant factory, the estimated light installation cost, total installation cost, and total production cost would be 15,473, 46,421, and 55,704 dollars, respectively. The calculated production cost per plant, including labor costs, would be 27 cents for the 25-day cultivation period, with a marketable ratio of 80%. Considering the annual total expenses, income, and depreciation costs, the selling price per plant was estimated to be approximately 56 cents.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Occurrence of White Rust and Growth of Chrysanthemum 'Baekma' by Control of Relative Humidity with Night Ventilation and Heating in the Greenhouse

    Yoo, Yong KweonRoh, Yong SeungNam, Byung Cheol
    15页
    查看更多>>摘要：This study was conducted to examine the effect of nighttime ventilation and heating on changes in temperature and humidity, the occurrence of white rust, and growth of standard chrysanthemum (Dendranthema grandiflorum) 'Baekma' in a greenhouse. For the ventilation treatments, the mean nighttime humidity in the control greenhouse, which had a closed side window, was higher (94.5%), but the humidity in the natural and natural+fan ventilation treatments was lower (74.3% and 72.8%, respectively). The rate of occurrence of white rust at 34 days after treatment was 100, 98.3, 75.6, and 43.3% for the control, fan ventilation, natural ventilation, and natural+fan ventilation treatments, respectively. The number of infected leaves and telia were the lowest in the natural+fan ventilation treatment compared with the other treatments. The growth of the chrysanthemum 'Baekma' was significantly suppressed in the control because of the occurrence of white rust and high humidity, while plant height, number of leaves, stem diameter, and fresh weight were the greatest in the natural+fan ventilation treatment. For the heating treatments, the mean nighttime temperature of the control (RH 95% heating), which was heating and held at 95% humidity, was 18.4 degrees C, while the temperature of the heating treatment, which was held at 70% relative humidity (RH 70% heating) was 25.8 degrees C. The rate of occurrence of white rust (34.4%), number of infected leaves (0.9), and telia (1.0) were the lowest in the RH 70% heating treatment compared with the other heating conditions. Also, the RH 70% heating treatment showed the best growth in terms of plant height, stem diameter, number of leaves, and fresh weight. Therefore, the natural+fan ventilation and RH 70% heating treatments were effective for the control of white rust and the growth of standard chrysanthemum 'Baekma' in a greenhouse.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Development of a Greenhouse Environment Monitoring System using Low-cost Microcontroller and Open-source Software

    Cha, Mi-KyungJeon, Youn A.Son, Jung EekChung, Sun-Ok...
    11页
    查看更多>>摘要：Continuous monitoring of environmental parameters provides farmers with useful information, which can improve the quality and productivity of crops grown in greenhouses. The objective of this study was to develop a greenhouse environment measurement system using a low-cost microcontroller with open-source software. Greenhouse environment parameters measured were air temperature, relative humidity, and carbon dioxide (CO2) concentration. The ranges of the temperature, relative humidity, and CO2 concentration were -40 to 120 degrees C, 0 to 100%, and 0 to 10,000 ppm, respectively. A 128 x 64 graphic LCD display was used for real-time monitoring of the greenhouse environments. An Arduino Uno R3 consisted of a USB interface for communicating with a computer, 6 analog inputs, and 14 digital input/output pins. A temperature/relative humidity sensor was connected to digital pins 2 and 3. A CO2 sensor was connected to digital pins 12 and 13. The LCD was connected to digital pin 1 (TX). The sketches were programmed with the Arduino Software (IDE). A measurement system including the Arduino board, sensors, and accessories was developed (totaling $244). Data for the environmental parameters in a venlo-type greenhouse were obtained using this system without any problems. We expect that the low-cost microcontroller using open-source software can be used for monitoring the environments of plastic greenhouses in Korea.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Control of Mg and P Ion Concentration as a Precondition to Use N, K and Ca Ion Sensors in Closed Hydroponics

    Kang, Nam JunKim, Hak JinJung, Dae HyunLee, Jung-Sup...
    7页
    查看更多>>摘要：Recycling nutrient solutions in closed hydroponic production systems is usually accompanied by an imbalance of nutrient solutions when concentration is controlled according to electrical conductivity (EC) levels. This study investigated whether it was possible to automatically control the concentrations of five essential elements nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) using only N, K and Ca ion sensors. N, P, K, Ca, and Mg uptake was measured in the nutrient solution, and relationships between absorbed ions were analyzed through twice-repeated experiments in lettuce. Results confirmed that the pattern of PO4 ion uptake was similar that of N, and the pattern of Mg ion uptake was similar that of Ca. PO4 ion uptake was most highly correlated with N, and Mg was most highly correlated with Ca. Regression coefficients of N and PO4 were significantly different at 1.04 and 0.55, respectively, but were similar between Ca and Mg at 0.35 and 0.40, respectively. Additional experiments were conducted to measure nutrient uptake in pak choi and rose plants, both to confirm the results from the first experiment in lettuce, and to assess possible application to other crops. Coefficients of determination both for N and PO4, and Ca and Mg were considerably high (R-2 = 0.86) in cultured pak choi, and similar results were observed in cultured rose (R-2 = 0.87 and 0.73, respectively). Regression coefficients for cultured pak choi were 0.56 and 0.24, respectively, and for rose were 0.51 and 0.16, respectively. Although the results obtained for N and PO4 were not consistent between the lettuce experiments, N and PO4 have similar regression coefficients for all crops. No common coefficient was found between Ca and Mg.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Growth and Phytochemical Contents of Ice Plant as Affected by Light Quality in a Closed-type Plant Production System

    Kim, Young JinKim, Hye MinHwang, Seung Jae
    8页
    查看更多>>摘要：A study was conducted to examine the effects of light quality on the growth and phytochemical contents of ice plant in a closed-type plant production system. Seeds were sown in a 128-cell plug tray using rockwool. The seedlings were then transplanted into a deep floating technique system with recirculating nutrient solution (EC 1.5 dS.m(-1), pH 6.5) in a closed-type plant production system. The nutrient solution was supplied at two weeks after transplanting with 2.0 mM NaCl concentration in all treatments for the development of the bladder cells. The three light sources with different light qualities used were as followed; FL (fluorescent lamps), combined RW LED (red:white = 7:3), and combined RBW LED (red:blue:white = 8:1:1) at 150 mu mol.m(-2).s(-1) PPFD with a photoperiod of 14/10 hours (light/dark). The results showed that the FL treatment had the greatest growth enhancement effects on the leaf area and the fresh and dry weights of the shoots and roots. The SPAD values were significantly higher under the FL and RBW LED treatments, at 29.8 and 30.6, respectively. No significant difference was observed in salinity under all treatments. Chlorophyll fluorescence was significantly higher under the FL treatment. The total phenol content and antioxidant activity were the highest under the RBW LED treatment. The total flavonoid content was significantly higher under the RBW LED and FL treatments. Hence, the results indicate that the growth of ice plant was maximized under the FL treatment. The phytochemical contents were maximized under the RBW LED treatment.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    Physicochemical Properties of Various Blends of Peatmoss and Perlite and the Selection of Rooting Media for Different Growing Seasons

    Shim, Chang YongKim, Chang HyeonPark, In SookChoi, Jong Myung...
    12页
    查看更多>>摘要：The physical properties of rooting media for the establishment of plugs in a greenhouse are modified according to variations in the greenhouse environment throughout the season. In this study, we established a standard for rooting media for the production of plug seedlings for each growing season (summer, winter and spring.fall). Eight types of peatmoss (PM) and 4 types of perlite (PL) commonly used in Korea were collected and blended with the ratio of 7 parts PM to 3 parts PL (v/v) to make 32 different rooting media blends. We determined the total porosity (TP), container capacity (CC), air-filled porosity (AFP), pH, and electrical conductivity (EC) of the 32 media blends, and 6 media blends were selected for seasonal use. We also conducted additional analyses for plant easily available water (EAW), buffering water (BW), cation exchange capacity (CEC), and nutrient contents in the 6 media blends. The TP, CC, and AFP of the 32 media blends ranged from 64.7 to 96.0%, 42.9 to 90.1%, and 1.3 to 27.8%, respectively, indicating that the physical properties were strongly influenced by the type of PM and PL. The pH and EC of the PMs ranged from 2.96 to 3.81 and 0.08 to 0.47 dS.m(-1), respectively. However, after blending the PM with the PL the pH was raised and the EC was lowered The media blends selected for the summer growing season were Blonde Golden peatmoss (BG) + No. 1 perlite size < 1 mm (PE1) and Latagro 0-10 mm (L1) + No. 2 perlite size 1-2 mm (PE2). These two media blends had 89.8-90.9% of TP, 80.8-81.3% of CC, and 9.0-9.7% of AFP. The media blends selected for the winter growing season were Sfagnumi Turvas (ST) + PE2 and Latagro 20-40 mm (L3) + PE2. These media blends had 79.9-86.7% of TP, 60.4-74.9% of CC, and 11.8-19.6% of AFP. The TP, CC, and AFP of two media blends, BG + No.3 perlite 2-5 mm (PE3) and Orange peatmoss (0) + PE3, selected for the spring and fall growing seasons, respectively, were 85.2-87.3%, 77.9%, and 7.4-9.4%, respectively. The percentage of EAW of the media blends selected for the spring, summer, and winter growing seasons ranged from 24.2-24.9%, 22.0-28.6%, and 18.0-21.8%, respectively, but the percentages of BW were not significantly different among the selected root media blends. The pH, EC, and CEC of the 6 selected media blends ranged from 3.11-3.97, 0.06-0.26 dS.m(-1), and 97-119 meq.100g(-1), respectively.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science

    The Regulation of Sugar Metabolism in Huangguan Pears (Pyres pyrifolia Nakai) with Edible Coatings of Calcium or Pullulan during Cold Storage

    Wang, JunXue, ZhaohuiKou, XiaohongJiang, Bianling...
    14页
    查看更多>>摘要：Sugars play many important roles in plant metabolism and directly influence fruit quality. The effects of two edible coatings, 2% calcium chloride and 1% pullulan, on sugar metabolism in postharvest Huangguan pear fruit were investigated during cold storage. The respiration rate, sugar content and composition, sucrose metabolism enzyme activities [acid invertase (AIV), neutral invertase (NI), sucrose synthase (SS), and sucrose phosphate synthase (SPS)] and expression of the ATV gene were analyzed during storage at 0 degrees C for 210 days. Coating treatments slowed the decrease of sucrose and hexose, the respiration rate, and the activities of AIV, NI, SS and SPS, thus maintaining high total soluble solids (TSS) and titratable acid (TA) contents in the fruit. There were no significant differences in AIV expression or activity between the treated and control groups of fruits. Both of the coatings could inhibit the activities of sucrose-cleaving enzymes, thus slowing the decrease of sugar content and maintaining high fruit quality during cold storage.
      原文链接:
    • NSTL
    • Korean Soc Horticultural Science