揷木用土 및 Peat plug利用이 만생종 왜철쭉의 揷木에 미치는 영향에 관한 硏究

沈慶久,河有美,朴永洙 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.2

This study was carried out to propagate Rhododendron Satsuki hybrid `Bemi-Kirishima' through soft-wood cuttings in the closed mist room in connection to different concentrations of IBA, cutting media, Peat plug. The results were as follows: For the time of cutting, there were noticeable differences in the cutting on June 21 and July 8. Out of cutting media tested, the media prepared by mixing 50% vermiculite and 50 perlite(v/v ) on the treatment of IBA 1000ppm gave 100% rooting and the longest root length. Rooting of plants in the Peat plug was 93.5% and they uniform root length. In addition, Peat plug provided more space for cutting than cutting basket. It was possible that we got good cuttings and therby mass propagation through Peat plug.

發根方法이 African violet 發根에 미치는 影響

沈慶久,辛漢中 成均館大學校 1981 論文集 Vol.30 No.-

The present experiment was conduct to investigate the effect of rooting method of African violet (Saintpoulia ionantha) cuttings. The results obtained are as follows. 1. Polyethylene enclosed cutting methods increased the number of rootings of African violet. 2. Rooting occured 14 days ofter cutting and shoot were differentiated 30 days after cutting by polyethylene enclosed methode. 3. The number of differentiated roots was increased of the polyethylene enclosed cuttings. However, Non-polyethylene enclosed cuttings significantly increased shoot development. 4. Rooting in cuttings was greatly influenced by varieties. Among the 3 varieties tested “Blue King” rooted sooner than other varieties. 5. Among the 3 varieties tested “Apollo” shoots developed sooner than the other varieties.

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%.

무궁화 根群 分布에 관한 연구 : 2. 土壤 種類別 實生苗의 根群 分布 2. Root system of seedlings on the soil conditions.

심경구,하유미,김진춘,서병기,강호철 성균관대학교 생명과학자원연구소 1995 生命資源科學硏究 Vol.2 No.1

This study was carried out to examine the characteristics of root system for seedlings of Hibiscus syriacus L. on the different soil conditions as a basic study for the stock of top-root cultivars. The obtained results are summarized as follows; It was significantly different on soil hardness between upland soil with 13 kg f/cm2 until 60 cm depth and waste landfill soil with 5 kg f/cm2 until 5 cm depth. But it was not measured soil hardness under 30 cm of waste landfill soil because of waste base. But soil pH was not different between soil conditions. The root depth of 'SKK 91-3' growing on upland soil was 81.0 cm and it was significantly different as compared with that of 'SKK 91-3' on the waste landfill. In addition, 'SKK 91-3' growing on upland soil had more root weight, root width, root number, main root diameter, and shoot growth than that on the waste landfill. Therefore it was suggested that soil condition affect root growth of seedlings in Hibiscus syriacus L. and then induce top-root system.

美國芙蓉 (Hibiscus moscheutos)의 花粉學的 硏究

沈慶久,朴相獻,徐炳基 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.2

Pollen morphology, sculpturing, and structure are useful in taxonomic studies from the family to the cultivar level. Scanning electron microscopy (SEM) studies on pollen morphology have proven to be a useful plant identification tool for taxonomists and horticulturist. Pollen grains of 5 Hibiscus moscheutos 'Southern belle' unnamed were studied. This study was conducted to observe pollen characters, and to investigate possibility of classification among cultivars. The results obtained were as follows. Pollen grains were characteristically monad and circular, sculpturing patterns were clavate in the light-pink color, others are echinate, and aperture were periporate. The diameter of pollen were large in the light-pink color and white color, and height of spines appeared small. Number of spines of pink color, light-color, and white color were more than that of the others. Number of aperture had no significant differeence each other, and number of pore area were plenty in flower-pink color and pink color. Morphological and structural characteristics of pollen may serve as an aid in the taxonomic identification of cultivars in Common Rose Mallow.

노박덩굴(Celastrus orbiculatus)의 繁殖에 관한 硏究

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

Bittersweet(Celastrus orbiculatus) grown widely in the mountains of Korea is perennial, deciduous and climbing plant. They have strong vines, flower from May to June and mature in October. The red coloured fruits are beautiful, use as the cut-flower materials, and also as the food of birds. This is now considered worthwhile to exploit as an outstanding landscape plant. The objectives of this study were investigation of the suitable propagation methods, reaffirmation of the utility of mist room for softwood cuttings, influence of bed temperature for hardwood cuttings, and determination of the effectiveness of various rooting promotion treatments. The results obtained were summarized as follows. The germination rate was 70% when the period of stratification was 50 days. In softwood cuttings, the rooting percentage and rootlet number tended to be greater in closed moist chamber than those in mist rooms. The rooting percentage, rootlet number and length of root in the 25℃-bed temperature were higher than those in the bed of 20℃ or 30℃ in hardwood cuttings. Cuttings treated with IBA 1000ppm rooted better than those received other hormone treatments in hardwood and softwood cuttings.

낙상홍(Ilex serrata)의 繁殖에 관한 硏究

沈慶久,徐炳基,朴相獻 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

本 硏究는 열매의 觀賞價値가 우수한 낙상홍의 適切한 繁殖方法을 究明하고자 種子播種을 비롯하여 揷木時期에 따라서 多樣한 濃度의 發根促進物質處理를 行하였던 바, 그 結果를 要約하면 다음과 같다. 1. 低溫層積時期에 따른 發芽率의 差異는 無處理에서 23.8%가 發芽하였으나 90日間의 처리는 85%의 發芽率을 나타냄으로써 種子의 冷混積效果가 있었다. 2. 綠枝揷木時 揷木時期가 1987年 6月 22日에 揷木한 揷穗에서 암그루의 경우 IBA 500ppm 浸漬處理가 發根率 80%, 發根數 5.94% 및 根長 4.95cm로 發根成績이 良好하였으며 숫그루는 1987年 6月 15日에 揷木한 揷穗에서 IBA 500ppm 處理에서 發根率이 70%를 비롯하여 發根數 9.01, 根長 10.00cm로서 發根促進效果를 나타내었다. 3. 일반적으로 숫그루의 發根狀態는 암그루에 비해 다소 높은 것으로 알려져 있으나 1987년 6월 22일에 揷木한 綠枝揷에서 암그루는 숫그루에 比해서 良好한 發根效果를 나타내었다. The objectives of this studs were investigation of the suitable propagation methods, the comparison of the influence of period for softwood cuttings of llex serrata and the determination of effectiveness of various rooting Promotion treatments. The results obtained were as follows. 1. The germination rate 85% when the Period of stratification was 90 days, while the germination rate 23.8% when the Period of stratification was 0 day. 2. The rooting rate of the female softwood cuttings treated IBA 500 ppm on June 22 was utmost 88%, and number of the cuttings was 5.94,%, and the length of the cutting was 4.94cm, The rooting of the male softwood cuttings treated IBA 500 ppm on June 15 was utmost 70%, and the number of the cuttings was 9, 10, and the length of the cutting was 10.00cm. 3. The rooting percentage, rootlet number, and length of root of male plants were generally better than those of female plants. But Female cuttings treated IBA 500 ppm, 1000 ppm, 2000ppm including on June 22 were rooted very well.

사과나무(Malus domestical Borkh.)의 VA 內生菌根에 관한 硏究

沈慶久,李景俊,劉種勳 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

The beneficial role of vesicular-arduscular mycorrhizae(VAM) for the growth of fruit trees 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 fruit trees. Especially, the study about VA mycorrhizae fungi indigenous to apple orchard soil has been less studied. The studies described here were undertaken to identify the genera of VAM fungi living in the soil wherein apple trees rooted, and to observe in fected roots of host plants in apple orchards in Suwean, Taegu, and Naju area. The results odtained were as follows. Apple roots infected by VAM fungi, and VAM fungi noticed in the rhizosphere soil were opserved in Suweon and Taegu, but only spores have been shown in Naju. Identified genera of the fungi investigated in the rhizosphere soil were Glomes sp. The VAM fungi showed a circular from, spore diameter and wall thickness were respectively 306㎛ and 17㎛. The form of attached hyphae was funnel shape, and that of vesicle was circular.

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.

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.