韓國自生으로서 미국 및 카나다에서 裁培되고 있는 造景樹木(灌木 및 蔓莖木)에 관한 硏究

沈慶久,徐炳基 한국화훼연구회 1995 화훼연구 Vol.4 No.2

This study was carried out to investigate the Korean native shrubs and vines in America landscape through the arboretums, plant inventory of America, computer file for accessions from Korea, sources lists of plants and seeds, and seed and plant nursery sources. The results were as follows : 1.Korean native shrubs and vines introduced in America and Canada were 142 species that 142 species were belong cultivated in arboretums, 85 species were being sold in nursery company, new cultivars were sellected from 50 species, and hybrids were bred from 20 species. B. Buxus microphylla var. koreana, Akebia quinata, Eleagus macrophylla, Forsythia ovata, Magnolia sieboldii, Poncirus trifoliata, Rhododendron mucronulatrm, Rhododendron yedoensis, Syringa meyeri 'Palibin', Syringa oblata var. dilatata, Viburnum carlesii, Weigela forida were being cultivated in many arboretums and sold in many nursery company, Also they had new hybrids as well as new cultivars. 3.36 species including Abeliophylum distichum were being cultivated in many arboretums and sold in many nursery company. Also they had new cultivars, but they didn't have new hybrids. 4.Deutzia parviflora, Elaeagnus multiflorus, Spiraea trichocarpa and Vibrurnum carlesii var. bitchiuense were being cultivated in many arboretums and sold in many nursery company. They didn't have new cultivars, but they had new hybrids. 5.33 species including Ardisia creanata were belong cultivated in many arboretums and sold in many nursery company But they didn't have both new cultivated and hybrid. 6.Clematis patens and Forsythia koreana were being cultivated in many arboretums. And it had new cultivars, but didn't have new hybrids. They were not being sold by any tour sery companies. 7.51 species including Abelia insularis were being cultivated in many arboretums. But they were not sold by any nursery company. They didn't have both new cultivated and hybrid. 8.Elaeagnus, globra, Forsythia saxatillis, Spiraea salicifolia, and Syringa wolfii were being cultivated in arboretums of America. But they were not sold by any nursery company and they had new hybrids, but didn't have now cultivars. 9.Only 10 species including Abelia mosanensis, Abelia coreana, Acanthopanax koreanum, Acanthopanax senticosus var. korean, Clematis mandshurica var. koreana, Echinosophora koreansis, Lonicera coreana, Rubus coreamus, and Zanthoxylum coreanum which are Korean native plants were not introduced in America anti Canada.

造景樹木類의 葉綠素 變化에 관한 硏究

沈慶久,安永熙 成均館大學校 科學技術硏究所 1983 論文集 Vol.34 No.1

Chlorophyll is the most important pigment in the light absorption process of photosynthesis. Chlorophylls that occur in photosynthetic organisms are chlorophyll a, chlorophyll b, and several other derivatives. The chlorophyll a molecule is the primary absorbing pigment of green plants, although chlorophyll b frequently occurs with chlorophyll a. However, the loss of chlorophyll is most obvious changes in senescing leaves. Chlorophyll a is lost at a slightly faster rate than chlorophyll b during senescence. This study was carried out to understand the seasonal changes in chlorophyll contents of various woody landscape plants (Ginkgo biloba, Liriodendron tulipifera, Populus tomentiglandulosa, Platanus occidentalis) and to know the control of senescence in tree leaf discs by gibberellic acid. Total chlorophyll and chlorophyll a increased up to early September when they reached maximum values of 1,277 and 1,000mg/10㎠ in Ginkgo biloba. Chlorophyll b of Liriodendron tulipifera remained relatively constant at about 0.184mg/10㎠, respectively, until early October when they began to decrease slightly. By early November, the total chlorophyll had declined 68% from Populas tomentiglandulosa maximum value. The rate of chlorophyll decline was gradual in various woody landscape plants until the occurrance of the first frost (October 22), after which the rate increased. At a maximum chlorophyll a to b in Platanus occidentalis was 3.55 in mid-August and then it decreased slightly in early September. This experiment also presents a leaf senescence system which show a very rapid response of leaf tissue chlorophyll levels to hormone treatment. Loss of total chlorophyll in Liriodendron tulipifera proceeds at a slow rate for about 2 days. Gibberellin is fully effective even when added at the middle of logarithmic phase of chlorophyll loss.

조경소재용 산사나무의 번식방법

심경구,하유미,강호철 한국원예학회HST 2000 원예과학기술지 Vol.18 No.2

한국자생으로서 미국, 캐나다에서 재배되고 있는 조경수목에 관한 소개

심경구,Sim, Gyeong-Gu 한국조경수협회 1991 造景樹 Vol.5 No.11

倭性 때죽나무 揷木繁殖에 관한 硏究

沈慶久,徐炳基,朴永洙,金建澔,權五俊 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1

This study was carried out to propagate Dwarf Japanese Snowbell(Styraxjaponicus) through cuttings in mist. The results were as follows : The best rooting result was obtained when the cuttings were soaked for ten seconds in a solution of 5000ppm of indolebutyric acid(IBA). Cuttings treated with IBA 10000ppm for ten seconds showed the best root weight including dry weight as well as root number. Rooting percentage averaged 52.9, 67.1, 84.3, 81.4% for untreated, 2000, 5000, 10000ppm IBA, respectively, after 70 days. The length of root taken 70 days after cutting under mist couldn't find out right relative correlation to different concentration of IBA solution. Rooted cuttings are easy to overwinter without difficulty in green house.

臺木 및 品種에 따른 矮性사과의 生育差異에 관한 硏究(第Ⅱ報)

沈慶久,安永熙,劉鍾勳 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.2

The introduction of dwarf apple growing in real terms in Korea has started from 1970. Nowadays, the cultivation area of dwarf apple trees has greately expanded, reaching 30% of total apple growing area in 1982 present. Many of the pomologists have interest in the growth habit of the dwarf apple trees but sy stematic studies on growth and flowering of them were not studied in detail. The present study was carried out to find out the effects of the most important dwarfing rootstocks; M.27, M.9, M.26, and MM.106 on their counter part scion cultivars; Fuji, Jonagold, Spur Earli Blaze, Starkrimson, Vista Bella, Oregon Spur, and Mutsu in their growth using 6-year-old apple trees. The results obtained were as follows. The tree height of Fuji on M.26 and on MM.106 were 288.60㎝, 291.20cm, respectively. The tree width of Fuji on M.26 and MM.106 were 328.20㎝, 292. 40cm, respectively. The tree height of Jonagold on M.26 were 256.20cm. The width of Jonaold on M.26 were 239.20cm. Therefore, a regardless of rootstocks, the tree height and width of Fuji cultivar were greater than those of Jonagold cultivar. The tree height, width, trunk circumference and number of shoots of Fuji on M.26 were greater than these of other scion cultivars on M.26. The Spur EarliBlaze on M.26 is superior to other cultivars in the number of flowers.

한국자생으로서 미국, 캐나다에서 재배되고 있는 조경수목에 관한 소개(2)

심경구,Sim, Gyeong-Gu 한국조경수협회 1992 造景樹 Vol.6 No.1

다래(Actinidia arguta)의 揷木에 관한 硏究

沈慶久,安永熙,黃重樂 成均館大學校 1982 論文集 Vol.32 No.-

Actinidia arguta PLANCH, native to mountains and wooded areas of Korea, are expected as edible landscape plants. Actinidia arguta are perenial and deciduous climbing plants with flesh leaves and strong vines, and flowered from May to June and matured from September to October. It is recommened that cuttings should be taken from the one-year-old stem after maturation. A percentage of successful propagation by cuttings has not yet studied in detail. This objective of this study was conducted to investigate the potential of Pergola materials of wild Actinidia arguta, and to determine the influence of rooting hormone and H_2SO_4 on the rooting of shoot cuttings and to compare female and male plants in rooting. Only cutting of one-year-old stems were collected for this experiment, Rooting beds in a green house were filled with vermiculite and installed the electric wires for heating under the beds. Rooting beds were closed with polyethylen film to maintain temperature and humidity. The results are summarized as follows. The rooting percentage of male plants are higher than that of female plants. The male plants cuttings tended to have the largest root systems in the colsed bed. The highest rootlet numbers resulted with higher concentration of auxin-treated cuttings. for 30 sec. Cuttings treated with IBA 1000ppm rooted better and had larger root systems than other hormone treatment combinations.

造景樹木의 VA內生菌根에 관한 硏究

沈慶久,李景俊,安永熙,劉鍾勳 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.2

The beneficial role of Vesicular-Arbuscular Mycorrhizae (VAM) for growth of woody landscape plants has already been well demonstrated in many countries, but little has been studied about VAM in Korea. So far, researches concerning physiological aspects of VAM have been abundant compared to researches on the ecological sides in woody landscape plants. Especially, the study about VA mycorrhizal fungi indigenous to threeflower maple (Acer triflorum), Korean mountain-ash. (Sorbus alnifolia), and European bird cherry (Prunus padus) have been less studied. The studies described here were undertaken to identify the genera of VAM fungi living in the soil wherein threeflower maple, Korean mountain-ash, and European bird cherry rooted, to observe infected root of host plants, and to compare mycorrhizal colonization related to soil factors. The results obtained were as follows. Ornamental trees roots infected by VAM fungi were observed and identified genera of the fungi investigated in the rhizosphere soil were Glomus sp. The VAM fungi of threeflower maple and Korean mountain-ash showed a circular form, but spore of European bird cherry showed a ellipsoidal form. Vesicle diameter of landscape plants were found from 25.21㎛ to 50.43㎛. Mycorrhizal colonization of threeflower maple, Korean mountain-ash, and European bird cherry were respectively 46.7, 33.3, and 20.0%. Soil pH of landscape trees were slightly acid, and available soil phosphate in the rhizosphere soil showed lower than normal soils. Rhizosphere soil moisture content were 22.90-29.38%.

忍冬덩굴의 揷木繁殖에 관한 硏究

沈慶久,安永熙,柳美先 成均館大學校 科學技術硏究所 1983 論文集 Vol.34 No.2

The honeysuckles constitute a sturdy group of semievergreen vines, some which can be grown in everywhere of the native mountains. As a group, they are not susceptible to serve disease troubles, which are easily grown and will usually produce a wealth of foliage, flower and fruit with very little care. They are perenial and deciduous climbing plants with strong vines, and flowered from June to September that are considerd as a good ornamental plants for Landscaping. Plants of honeysuckle are ordinarily able to be rooted from softwood or hardwood cuttings, the cutting itself being about 4-5cm long. This study was carried out to determine the effectiveness. of various rate of IBA and NAA treatment on rooting of honeysuckles (Lonicera japonica, Lonicera japonica var. aureoreticulata, Lonicera sempervirens) in the mist room and closed moist chamber. And the results obtained were as follows. Treatment of IBA and NAA increase! in the rooting percentage, rootlet number and length of root on the rooting of honeysuckle cuttings. The rooting percentage of honeysuckle cuttings with IBA 2000pprn 10 sec dip are higher than other rooting hormone treatment. IBA showed more promoting .effect than NAA treatment on the rooting of leafy softwood cuttings. Rooting percentage and number of root tended to have the hightest root system in the closed moist chamber than the mist room.