• Applied Biological Chemistry
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• v.43 no.2
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• pp.148-152
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• 2000

The antioxidative activities of water-soluble extracts from leaves and stem bark of Morus alba and Cudrania tricuspidata were compared in vitro experimental models. Antioxidative activities were measured by inhibition activity against lipid peroxidation of mouse liver microsome, and they were showed in the following order; stem bark of C. tricuspidata(53%)>stem bark of M. alba(43%)>leaves of C. tricuspidata(38%)>leaves of M. alba(43%). In antioxidative activities determined by thiocyanate method and TBA method, the water-soluble extract of stem bark of C. tricuspidata showed the highest antioxidative activity. The water-soluble extracts of leaves were slightly stronger than other extracts in DPPH$({\alpha},{\alpha}'-diphenyl-{\beta}-picrylhydrazyl)$ method. The concentrations of total polyphenolic compound from water-soluble extracts of leaves and stem bark of M. alba and C. tricuspidata were 1.32%, 1.28%, 1.34% and 1.30% respectively. In these results, the water-soluble extract of stem bark from Cudrania tricuspidata showed the highest antioxidative activity.

• Korean journal of applied entomology
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• v.56 no.2
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• pp.203-212
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• 2017

Thirty-three species of insect pests including of two-spotted spider mite, Tetranychus urticae Koch, and air-breathing land snail, Acusta despecta Sowerby, were observed on mulberry for producing mulberry fruits in Jeonbuk province from 2015 to 2016. Of these, 8 species of insect pests, including of mulberry thrips, Pseudodendrothrips mori Niwa, are regarded as major insect pests. Of the 25 species observed before harvesting, 6 species-P. mori, Anomoneura mori, Pseudaulacaspis pentagona, Baris deplanata, Menophra atrilineata and T. urticae-are regarded as major insect pests. In contrast, of the 20 species observed after harvesting, 5 species-P. mori, P. pentagona, Glyphodes pyloalis Walker, Hyphantria cunea Drury and T. urticae-are regarded as major insect pests. Eight of the major insect pest species and nine other insect pest species-including Hexcacentrus unicolor Serville, Malcus japonicus Ishihara et Hasegawa, Halyomorpha halys stal, Xylosandrus germanus Blandford, four species of Repidoptera (Bombyx mandarina Moore, Euproctis subflava Bremer, Acronicta major Bremer, Agrotis trifurca Butler), and Acusta despecta Sowerby-were observed at all sites studied, although occurrence of the insect pests observed on mulberry varied from site to site.

• Journal of Sericultural and Entomological Science
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• v.3
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• pp.73-74
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• 1963

우리나라 Morus(뽕나무속)에 대한 분류학적인 연구는 지금으로부터 약 40 여년전부터 시작되어 현재는 거의 정리되었다고 볼 수 있다. 우선 우리나라에 자생되는 각종에 대하여 개별적인 분류지리학적면을 탐견 약기하여 보기로 한다. Morus alba L. 즉 재배종이며 보편적인 "뽕나무"로 알려져 있는 것이며 수많은 변, 품종들이 여기서 파생되고 있다. 한국산 야생 Morus를 크게 나누어 세가지 계통으로 구분할 수있다. 즉 I. Morus bombycis Koidzumi. 산뽕나무(Yamaguwa). II. Morus mongolica Schneider. 몽고뽕나무(Mongoguwa). III. Morus tiliaefolia Makino. 참털뽕나무(Keguwa). (중략)

• Journal of Sericultural and Entomological Science
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• v.37 no.2
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• pp.99-108
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• 1995

The experiment was carried out to define the effect of the boron in nutrient solution on the development of mulberry root and cold damage. The length of shoots only attained about 50cm and then stopped in case of boron deficiency, while the mulberry trees developed vigorous and attained over 190cm long under boron supply condition. When boron is deficient, the measles appeared on surface of the stem and the necrosis appeared on the petiole, midribs and veins of leaves. At 70 days after planting, almost all new roots and old roots changed to brown, the lateral roots became necrosis by boron deficiency. After three days of stopping boron supply, many new roots changed to brown and after two days of boron resupply, new roots began to grow out and then new roots normally developed. Content of boron in leaves and barks increased by the increase of boron concentration in nutrient solution and maximum boron content in leaves and barks was obtained with boron-sufficient treatment of 0.5ppm. Treatment of 0.5ppm boron supply indicated that the leaves and barks contained more phospholipid, protein, sugar, RNA and proline than treatment of 0.01ppm boron supply in nutrient solution. The cuttings grown in boron supply nutrition have a sufficient tolerance at -10$^{\circ}C$ and -15$^{\circ}C$ for 24 hours while cuttings grown in boron-deficient nutrition have a weak tolerance at the same condition. As mentioned above, we can conclude that the effect of boron deficiency on root development is much severe and the relationship between the lack of boron and cold damage is very closely related.

• The Korean Journal of Mycology
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• v.46 no.3
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• pp.255-269
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• 2018

Armillaria is a white-rot fungus that decomposes organics; it is also a root pathogen that kills trees. Recently, since the forest tending practice, the incidence of Armillaria infections on tree stumps has been increasing. Herein, we have examined the morphological features of Armillaria solidipes and A. gallica collected from 10 areas in Korea, and investigated the activities of the decomposing enzymes cellulase and laccase of these two Armillaria species. A. solidipes was found in eight host tree species including Pinus densiflora, Quercus serrata, and Castanea crenata at the altitude of 107~1,396 m, while A. gallica was found in three host species including P. densiflora and Fraxinus rhynchophylla at the altitude of 119~556 m. The fruiting bodies of A. solidipes are close with lamellae, and have brown to black hairs on the stipe, while those of A. gallica are distant with lamellae and clavate-shaped, and have yellow hairs on the base. The activites of cellulase of the two species were not different, but the activity of A. solidipes laccase was higher ($12.94{\pm}0.4U/mL$) than that of A. gallica laccase ($9.14{\pm}0.3U/mL$).

• Korean journal of applied entomology
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• v.55 no.4
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• pp.383-388
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• 2016

Seasonal occurrence and tne effects of two organic farming materials on mulberry sucker, Anomoneura mori were investigated on mulberry grown for fruit production in Buan, Jeonbuk, South Korea.. Overwintered adults of A. mori occurred from late March to mid-May with a peak in mid-April. Overwintered females began to lay eggs on winter buds from mid-April. Emerged nymphs appeared from early May and peaked in mid-May. Newly eclosed adults, appearing from early June, soon scattered and were not found in the mulberry field after mid-June. Therefore, the optimal control period for A. mori was mid-April for adults and early May for nymphs. Sophora extract and derris extract were effective organic farming materials for controllingl the nymphs of A. mori. It was found that derris extract sprayed 2-3 times at 5-days intervals in early May effected good control against A. mori nymphs.

• Journal of Sericultural and Entomological Science
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• v.43 no.2
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• pp.88-92
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• 2001

The crossabilities among 3 wild mulberry species and 3 cultivars growing in the Korean Peninsula had been studied. The result of the crossabilities of Moms tiliaefolia with Moms bombycis and 3 cultivars were possible, but with Morus mongolica was impossible. Those of Moms mongolica with Moms bombycis, Morus tiliaefolia and 2 cultivars except Daeryukppong were possible too. And those of Morus bombycis with Moms titiaefolia, Moms mongolica were impossible, but with 3 cultivars were possible moderately.

• Journal of Korean Society of Forest Science
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• v.101 no.4
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• pp.635-639
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• 2012

The present study was initiated to find out the insect vector of mulberry dwarf phytoplasma. Among the collected insects from mulberry cultivation region, the sucking insects (Hishimonas sellatus, Bothrogonia japonica and Balclutha punctata) were selected for transmission of mulberry dwarf phytoplasma. Sucking insects, H. sellatus and B. punctata successfully transmitted phytoplasma to healthy seedling mulberry and periwinkle plants by inoculation-feeding. Typical dwarf symptom was observed in mulberry tree, but very slender twigs on stem and formatted small leaves were found on periwinkle plants, which are typical witches' broom symptoms. The phytoplasmas were detected in all samples exception sucking insects B. japonica using phytoplasma universal primer pair R16F2n/R2.

• Journal of Mushroom
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• v.10 no.3
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• pp.129-135
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• 2012

This study was carried out to investigated optimum mixing ratio of Korean natural Cudrania tricuspidata for production of functional oyster mushroom. Total nitrogen and carbon source of Cudrania tricuspidata was 0.27% and 40.9%, respectively and C/N ratio was 152. Total nitrogen source and pH of substrates mixed with Cudrania tricuspidata were 2.7~2.8 and 4.9~5.1, respectively. The contents of $P_2O_5$, CaO, MgO and $Na_2O$ were no significant difference. Mycerial growth was faster at Cudrania tricuspidata 10% than that of control, but the other treatment was slower. Yields of fruiting body was the highest at Cudrania tricuspidata 20%, and diameter and thick of pileus were no significant difference to increase of Cudrania tricuspidata addition ratio. The L value of pileus was the highest at the Cudrania tricuspidata 20% during mushroom harvest, but there was no significant difference in the a-value and the b-value. Chemical contents of fruiting body were the highest at the Cudrania tricuspidata 30%.

• Korean journal of applied entomology
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• v.12 no.2
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• pp.57-62
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• 1973

한국의 뽕나무 해충은 210종 이상이 기록되었다. 과거 4반세기 동안 다수의 합성농약이 농림해충 및 위생해충 방제에 큰 공헌을 해 온 것은 주지의 사실이다. 그러나 뽕나무의 해충에 대해서는 농약에 대한 내약력이 가장 약한 누에에 미칠 악영향 때문에 여러 가지 어려운 점이 많아서 외국에서도 잔효성이 짧은 TEPP 또는 DDVP등이 사용되고 있을 정도이다. 한국에서도 뽕나무순혹파리 방제를 위해서 초여름에 BHC 분제의 토양처리가 실천되어 왔으며 근래에는 뽕나무애바구미의 피해가 심해져서 몇 가지 살충제로 방제시험이 백에 의해서 이루어 졌을 뿐이다· 따라서 뽕나무해풍 방제를 위해서는 천적을 이용한 방제가 바람직하다 하겠다. 필자들은 우선 천적으로서의 거미의 분포 실태를 파악하기 위하여 수원시 소재 잠업시험장 뽕밭에서 1971-72년에 조사하였다. (Fig. 1) 조사된 뽕밭의 면적을 27a이었으며 9개의 조사구를 택하고 이것을 생태적 환경에 따라 3군으로 나누어 비교해 보았다. A, B 및 C구는 동쪽 가에 위치하며 가로등과 3개의 잠실의 등불의 영향을 받아 해충의 밀도가 높았으며 E, D 및 H구는 뽕밭의 중앙부이며 뽕나무 오갈병의 피해가 심하여 뽕나무가 작았고 또한 결주도 많았다. F, G 및 I구는 도로를 격하고 뽕밭 또는 초지에 면한 가장자리 이었 다. 이밖에 수시로 근처의 딴 뽕밭에서 채집한 것도 포함하여 4,987마리의 거미를 조사한 바 17과 47속 66종에 이르렀다. 이것을 Abe의 보고와 비교한 때 종수가 월등 많았으며 또한 Kayashima의 보고와는 달리 풀거미속(Agelena)거미가 훨씬 적은 것이 특이하였다. 채집된 거미를 그 생태에 기초하여 4군으로 나누어 천적으로서의 가치를 비교해 보면 다음과 같다. A군 : 대형의 둥근 망을 치는 종류들로서 날으는 곤충을 잡아먹는데 천적으로서 그다지 중요하지는 않다. 106주에서 245마리가 채집되었으며 (Tetragnatha squamata)가 우량종이었다. B군 : 소형의 둥근 망을 가지나 잎사이에 치는 종들로서 비록 몸은 작지만 가장 중요한 천적이다. 꼬마거미과 애접시거미과에 속하는 거미들이며 18종, 2,815마리가 잡혔다 우점종은 (Erigoridium raminicola),(Theridion octomaculata) (Enoplognatha spp.)이었다. C군 : 떠돌이거미로서 소형곤충을 잡아먹어 유력한 천적이다 26종 1,727마리가 잡혔으며 게거미과, 깡총거미과 및 염낭거미과의 거미들이 우점종이었다. D군 : 지상을 걸어다니는 떠돌이거미로서 늑대거미과가 약간 잡혔으나 천적으로서 중요한 것으로는 생각되지 않는다. 앞으로 이들과 해충과의 관계를 조사구명 해야 할 것이다.