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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Horticultural Science and Technology
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Korean Society of Horticultural Science
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Yield Effect of Tomato Plants Raised from Cuttings of Lateral Shoot in Hydroponically Grown Cherry Tomato
Yang, Seung-Koo ; LIm, Hyung-Ki ; Choi, Kyung Ju ; Kim, Wol-Soo ; Chung, Soon Ju ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 5~8
The purpose of this study was to investigate the effect of tomato plants raised from cuttings of lateral shoot on the yield of hydroponically-grown cherry tomato. Pepe seedlings and its cuttings were grown in 50 cell tray filled with carbonized rice hull and perlite (3 : 7, v/v). Seedlings were transplanted on 16th of March 1995 and completed the harvesting on 17th of July. Standard ‘Yamazaki’ nutrient solution was used for growing tomatoes. There were no significant differences in shoot growth between plants from cuttings and seedlings. The first fruit cluster emerged at fourth node from cuttings, but emerged at seventh node from seedlings. The number of branch per cluster increased in plants raised from cuttings than that from the seedlings. The number of fruit from first to third clusters increased up to 26% in the plants from cuttings than that from seedlings. The fruit yields of first to third clusters were higher by 82%, and those from fourth to sixth clusters were higher by 30% in the plants raised from cuttings when compared with the seedlings. However, there were no significant differences in the content of soluble solids and titratable acid. No incidence of virus disease was detected which is likely to be caused by a wound during the early stage of vegetative growth. Therefore, cuttings of lateral shoot are feasible to increase the early yield of hydroponically grown cherry tomato.
Transformation of Chinese Cabbage withL-Gulono-
-Lactone Oxidase (GLOase)-encoding Gene using Agrobacterium tumefaciens
Cho, Yi Nam ; Park, So Young ; Noh, Tae Kyung ; Song, Min Jung ; Park, Young Soo ; Min, Byung Whan ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 9~13
Explants of Chinese cabbage (Brassica campestris L. ssp. pekinensis) inbred lines CC42, CC51 and CC52 were cocultivated with Agrobacterium tumefaciens strain LBA4404 harboring a binary vector pCAMBIA containing hph gene for resistance to hygromycin and GLOase gene related to L-ascorbic acid biosynthesis from rat. After co-cultivation for 48 hours, the cotyledonary petioles were placed on shoot induction media containing 5 mg/L hygromycin. Shoot induction was continued for 3-4 weeks, then subcultured once, and after 2 weeks the shoots were transferred to root induction medium. After culture and selection on MS medium supplemented with 2 mg․L^.^1BAP, 2 mg․L^.^1 zeatin, 1 mg․L^.^1 NAA, 4 mg․L^.^1 AgNO3, and 5 mg․L^.^1 hygromycin, a number of hygromycin-resistant plantlets were regenerated. Polymerase chain reaction, Southern and Northern blotting analyses were used to identify and characterize the transgenic plants with the integrated GLOase gene. Over 8 transgenic plants have been established in soil and flowered in the greenhouse. This procedure facilitates introduction of another desirable gene into commercial inbred lines of Chinese cabbage.
Cultivation Area for Seed Bulb Production of Korean Native Allium wakegi Araki
Song, Won-Seob ; Yang, Seung-Yul ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 14~18
To search for the optimum areas for producing high quality seed bulb of Korean native Allium wakegi Araki, five local seed farms were set up in the southern coastal areas of Goheung, Yeosu, Boseong and Suncheon including Jeju. The aim of the study was to investigate the influence of bulb size on plant growth at various areas. The large bulbs gave more vigorous vegetative growth as shown in plant height and fresh weight in all locations. Major morphological characters of seed bulbs produced in Goheung were round-shaped and showed larger size, small seed bulbs in Suncheon, medium in Boseong and Jeju. The number of bulbs produced was highest in Yeosu. Gohueng farm produced best result in bulb size, bulb weight and bulb index except the number of bulbs. The productivity of seed bulbs at Yeosu, Boseong and Suncheon farms were very similar to that of Jeju.
Color Evaluation of French Fries for Processing Potential of Cold-stored Summer-season Potatoes
Park, Youn-Moon ; Park, Se Won ; Ku, Oe Seok ; Lee, Byoung Wook ; Hong, Sae Jin ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 19~24
‘Atlantic’ and ‘Superior’ potatoes were harvested in summer and stored at 4
C, and 15
C for 12 weeks to evaluate processing potential for french fries. As an indicator of fresh material storability, the weight loss and percent of sprouting were investigated. Processing potential of stored potatoes was assessed by measuring Hunter color values and by performing sensory evaluation of the appearance of french fries. ‘Atlantic’ potato tubers stored at 4
C, and 15
C showed 4.5%, 7.5%, and 10.0% fresh weight loss, respectively, during 12 week of storage. Similar trend was observed in the ‘Superior’ potatoes. Incidence of sprouting in both cultivars showed above 10% at 12
C and 90% at 15
C. Major soluble sugars were glucose, fructose and sucrose, and contained 8.2 mg․g^.^1FW and 3.9 mg․g^.^1FW in ‘Atlantic’ and ‘Superior’, respectively. There were no changes in sugar contents of potatoes, whereas the contents increased more than 20mg․g^.^1FW in both potato cultivars stored at 4
C for 9 weeks. When potatoes were processed for french fries after 12-week storage, higher Hunter L values were observed in ‘Atlantic’ and in ‘Superior’ potatoes stored at 12
C. Under such storage conditions, Hunter ‘a’ values of the product were maintained at similar level at harvest. In contrast, storage at higher temperature seemed to suppress increases in Hunter b values of the product. Low b values were observed after storage at 15
C in ‘Atlantic’ potatoes and 12
C in ‘Superior’ potatoes. Considering both loss of fresh materials during storage and the post-storage processing potential, storage of ‘Atlantic’ and ‘Superior’ potatoes at 12
C are highly recommendable.
Breeding of a Very Soft, Juicy, Large Sized, and High Quality Mid-season Pear Cultivar 'Manpungbae'
Cho, Kwang-Sik ; Kang, Sam-Seok ; Cho, Hyeon-Mo ; Ko, Gap-Cheon ; Hong, Kyung-Hy ; Son, Dong-Soo ; Kim, Whee-Cheon ; Kim, Ki-Youl ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 25~28
‘Manpungbae’ originated from the cross between ‘Hosui’×‘Okusankichi’ in 1982 at Naju Pear Research Institute was preliminarily selected in 1990, and named in 1997. The tree shows vigorous growth and upright-spreading habit, and high level of field resistance to black leaf spot (Alternaria kikuchiana). It carries rich pollen grains but shows cross-incompatibility with ‘Wonwhang’. Optimum harvest date is around Sept. 23, 7 days earlier than that of ‘Niitaka’. The fruit shape is oblate and the skin color is greenish yellowish brown at normal harvesting time because the fruit ripens before the skin pigmentation. However, fully ripened fruit has yellowish brown skin color. Fruit weighs about 768 g, and the soluble solid content is 13.1
Bx. The flesh has negligible amount of grit, which is very soft and juicy, and thus it has good eating quality. Shelf-life is relatively short under the room temperature as compared with other mid-season cultivars, Therefore, immediate shipment after harvesting would be desirable.
Effect of Uniconazole Concentration and Treatment Date on the Growth and Flowering of Dicentra spectabilis L.
Kim, Hong-Yul ; Chung, Jae-Dong ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 29~33
This experiment was conducted to investigate the appropriate treatment time and concentration of uniconazole on the growth and flowering of Dicentra spectabilis L. to increase the ornamental value. Concentrations of uniconazole were 0, 11, 23 and 46 mg․L^.^1 and treatments were made on 29 March, 5 April and 12 April. Each concentration of 50 mL uniconazole was drenched equally on the soil surface of each pot. The stem growth treated by uniconazole was retarded with proportional to the concentration and with earlier treatment. Also uniconazole treatment increased and maintained the green color of leaf compared with the control. Increase in the number of inflorescences and florets improved the ornamental value. Thus, the soil drench of uniconazole was effective method on the growth retardation of D. spectabilis L. However, the growth of stem, peduncle and floret were retarded excessively with the concentration used in this experiment. Therefore, it is thought that the appropriate concentration lies below the level of 11 mg․L^.^1. Additional studies may be required with regard to the level of concentration.
Effects of Storage Condition, Growth Regulator, and Inorganic Salt on the Germination of Lysimachia davurica
Lee, Hee-Doo ; Kim, Si-Dong ; Kim, Hak-Hyun ; Kim, Ju-Hyoung ; Lee, Jong-Won ; Yun, Tae ; Lee, Cheol-Hee ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 34~38
The study was carried out to investigate the effects of germination temperature, storage method and period, growth regulator and inorganic salts on germination of Lysimachia davurica. The seeds of Lysimachia davurica germinated best under light and at 30
C. Wet storage treatment for 120 days of seed gave germination rate of 46.3% at best. Six hours soaking treatment with 200 mg․L^.^1 GA3 showed 94.7% germination about 2.5 times higher than the control. In case of BA treatment, the germination rate of 71.0% was obtained with 100 mg․L^.^1 for three hours soaking. Soaking treatment with 20 mM KNO_3 and Ca(NO_3)_2 for 12 hours gave the best germination rate of 86.0% and 92.7%, respectively.
Effects of Storage Method and Priming Treatment on Seed Germination of Weigela subsessilis L.H. B_A_I_L_E_Y.
Lee, Hee-Doo ; Kim, Si-Dong ; Kim, Hak-Hyeon ; Kim, Ju-Hyoung ; Lee, Jong-Won ; Yun, Tae ; Kim, Tae-Jung ; Lee, Cheol-Hui ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 39~44
To establish the mass propagation methods of Weigela subsessilis, a promising native plant species for horticultural use, several factors influencing seed germination were evaluated. The seeds of W. subsessilis germinated best under light and at 25
C. Wet cold treatment of seeds improved a germination rate with 31.7% in 90-day treatment at 4
C. The germination rate increased as soaking period was increased in GA_3 treatment. Twelve-hour soaking with 200mg․L^.^1 showed 69.3% germination, 2.7 times higher than the control. In case of IAA, the best rate of 45.7% germination was obtained by 100mg․L^.^1 with 3-hour soaking, but the rate decreased as the soaking duration increased beyond 3-hour soaking. Soaking treatment with 20mM KNO_3 for 24 hours showed 76.7% germination. Higher concentration with longer soaking tended to give better germination. This trend was also shown in case of Ca(NO_3)_2 treatment and KH_2PO_4 treatment gave lowest germination percentage.
Optimum Concentrations of Glycerine and Tween 20, and Collecting Time for Dry Processing of Magnolia kobus and Magnolia grandiflora Leaves
Sohn, Kwan-Hwa ; Kwon, Hye-Jin ; Kim, Ei-Young ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 45~49
Leaves of Magnolia kobus and Magnolia grandiflora collected on June 25 and July 10, 2000, were preserved in 20, 30, 40, 50, and 60% glycerine solution to examine its pliability. To promote rapid absorption of glycerine by leaves, five levels of Tween 20, namely 0.1, 0.5, 1.0, 5.0 and 10 mL․L^.^1 were added to 40% glycerine solution. The absorption by leaves collected on June 10 was enhanced with 1.0 mL․L^.^1 in M. grandiflora. However, there were no effects on M. kobus. The leaves preserved in 40% glycerine solution bimonthly June 25 to October 10 increased from 3 to 26 days for M. kobus and from 7 to 33 days for M. grandiflora. Preserving the leaves of both species need to be completed by September. After preserving, the color of leaves changed green to dark brown, and pale brown with Tween 20 treatment. To maintain green color in the leaves after drying, water-soluble green dye may be needed in glycerine solution.
Effects of Various Drying Methods for Wild Flower
Lee, Won-Young ; Yoon, Mi-Jeong ; Kwak, Beyoung-Hwa ; Park, Cheon-Ho ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 50~56
The study was conducted to find out some appropriate methods of drying wild flower. Application of microwave with silica-gel treatments took the shortest period of time taking for only 1 to 3 minutes. In terms of petal color change, yellow color flowers changed the least, proving to be the best for dry flowers among those of other colors. The degree of change in color was yellow, blue, purple, white, and red in that order. The panel scoring showed that application of microwave with silica-gel treatments gained the highest scores and oven drying the lowest. In order to observe changes in the shape of flower, color, diameter, height, thickness, fresh weight, and dry weight, were measured. Statistical LSD showed that relatively thin petal flowers resulted in the higher scores than thick petal ones. In drying flowers, Compositae flowers were found to be most suitable. In press drying, flat flowers were easier to maintain their original flower shape than other types of flowers. The flower petals which are easily dehiscent were unsuitable for drying. It was found that such flowers as Triticum aestivum, Carthamus tinctorius, and Kerria japonica with higher silicon dioxide (SiO_2) content in the flower tissues gave better results, whereas those flowers with less silicon dioxide were poorer.
Virus-Infected Status in Imported Bulbs of Lilium Oriental Hybrids
Park, Kyeung-Il ; Choi, Jeong-Doo ; Park, In-Sook ; Eum, Sun-Jung ; Kim, Kiu-Weon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 57~61
The study was performed to investigate the virus infection status of imported Lilium Oriental Hybrids bulbs. Many virus particles were observed through direct negative staining methods (DN) in virus-infected leaves of the lily ‘Casa Blanca’. Among those, filamentous virus of about 650 nm in length was identified as lily symptomless virus (LSV), and virus of about 750 nm was presumed to be as TBV lily stain (TBV-L). This may not be a tulip breaking virus (TBV), as examined by an immunosorbent electron microscope (ISEM). An unknown virus in Lilium was observed, and the virus was enormous filamentous particles of about 2,000 nm in length. In detecting the virus by enzyme-linked immunosorbent assay (ELISA) and direct tissue blotting immunoassay (DTBIA), it was confirmed that ‘Casa Blanca’ was infected with LSV in the range of 50.077.5%, cucumber mosaic virus (CMV) 10.037.5% and TBV 75.097.5%. Twenty percenty of ‘Acapulco’ was infected with LSV, 2.57.5% with CMV and 15.035.0% with TMV. In ‘Casa Blanca’ and ‘Acapulco’, the rates of plants infected with one virus were 7.5% and 25.0%, with two viruses were 70.0% and 22.5%, and with three viruses were 22.5% and 5%, respectively. Sugar contents in leaves and scales were higher in healthy plants than virus-infected plants.
Effect of Nutrients, Inorganic Metal Compound, and Antibiotics on Rooting and Growth of Four Herb Plants in Hydroponic Vessel Culture
Lee, Jeong-Hwa ; Jeong, Yeon-Ok ; Park, Joong-Choon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 1, 2003, Pages 62~67
The study was conducted to investigate the effect of nutrients, inorganic metal compound, and antibiotics on rooting and growth of thyme (Thymus vulgaris L.), oregano (Origanum vulgare L.), pineapplemint (Mentha suareolens ‘Variegata’), and eau de colognemint (Mentha piperita var. citrata) in hydroponic vessel culture. All of four herbs showed a 88.9% survival rate with tap water and ion-Powder in hydroponic vessel culture. Oregano with 3 g․L^.^1 hyponex, 3 g․L^.^1 hyponex＋0.02% or 0.50% ion-Powder and pineapplemint with 3 mL․L^.^1 chrysal＋0.02% or 0.50% ion-Powder showed relatively higher survival rate. The survival rate of eau de colognemint was higher in all treatments with the exception of 6 g․L^.^1 hyponex. Thyme survived only with tap water and ion-Powder, and any other on thyme caused wilting. Shoot numbers, stem length, number of leaves, leaf width, root numbers and length were best with 0.02% ion-Powder. However, there was no significant difference between tap water and ion-Powder treatments. Leaf length and width, root length and number of oregano with 0.10% or 0.50% ion-Powder were better than that with tap water. Growth of above ground part of oregano with 3 g․L^.^1 hyponex＋0.02% or 0.50% ion-Powder was better than that with tap water, but roots failed to grow. No statistical differences were observed between ion-Powder and tap water on stem length, leaf length, and leaf width of pineapplemint. But root number and length were better with 0.02% ion-Powder than that with tap water. Stem length, leaves number, leaf length and width, and root number of eau de colognemint with 0.50% ion-Powder were better than that with tap water.