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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Sericultural and Entomological Science
Journal Basic Information
Journal DOI :
Korean Society of Sericultural Science
Editor in Chief :
Volume & Issues
Volume 37, Issue 2 - Dec 1995
Volume 37, Issue 1 - Jun 1995
Selecting the target year
Effect of Boron in Nutrient Solution on Root Development and Freezing Tolerance of Mulberry
Le, Quang-Tu ; Keu ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 99~108
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
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.
Effect of Sulfur Application on Mulberry Growth and Chemical Composition of Soil and Leaf.
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 109~113
Effects of sulfur application on mulberry growth and soil chemical properties were examined in mulberry trees grown in a green house. Mulberry graftages were planted in Wagner pots and sulfur was applied at the levels of 0, 30, 60, or 120 kg/10a. Mulberry stem growth increased by 3.2 cm at 30 kg/ha than at 0 kg/ha sulfur application. Stem growth, however, decreased by 3.7 cm with the application of sulfur higher than at 60 kg/10a. Soil pH changed by the application of sulfur. With the application of sulfur at 120 kg/10a, soil pH decreased by 3.0. Temporal changes in the effective from sulfur content in soil indicated that sulfur dissolved between 4 to 10 days after application in the soil. Content of moisture and chemical components in mulberry leaves was also affected by the application levels of sulfur. Moisture, total-N, No3-N, K, and S content decreased, but F and Ca content increased with the application of sulfur lower than at 60 kg/10a. With the application of sulfur higher than at 60 kg/10a, P, S, and K content increased.
Effect of Juvenile Hormone Analogue(JHA) on the Leading Silkworm Parents and their Hybroid Stocks
Seol, Gwang-Yeol ; Hong, Seong-Jin ; Seong, Su-Il ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 114~120
The effect of juvenile hormone analogue(JHA, Manina) on larval feeding duration, pupation ratio, cocoon weight, and cocoon shell weight in the present commercial parent and hybrid silkworm stocks were investigated. Topical applications of JHA on parent silkworm stocks were to prolong larval duration, but results of response on those stocks were not consistent. Especially the JHA on Jam 121, Jam 123 and Jam 138 did not play a role in larval duration, whereas that on Jam 114 was most effective in prolongation more than two days, compared with the controls. subsequent prolongation of feeding duration resulted in increase of cocoon weight and cocoon shell weight of most parent silkworm stocks, while Jam 114 showed decrease in cocoon weight and cocoon shell weight in spite of prolonged feeding duration of two days. Unlike the parent silkworm stocks, durations of feeding period in all hybrid silkworm stocks were prolonged about one day. Treatments of JHA on the hybrid stocks gave rise to increase of cocoon weight and cocoon shell weight, and especially were most effective in Sasung-jam, Eunbaek-jam and Samgwang-jam. Although treatments of JHA seemed to have no harmful effect on physiology of parent silkworm stocks as well as that of hybrid stocks, the JHA retarded pupation ratio of some parent silkworm stocks such as Jam 122, 131, 135 and 138 by about 10%.
Effect of Insect Growth Regulators on Development and Physiology of the Silkworm, bombyx mori, L. I. Effect of fenoxycarb, juvernile hormone Analog, on larval growth, pupation and cocoon characters by oral application
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 121~126
The effects of oral application of fenoxycarb, the commercial formulation Insegar, to the selected developmental stages of the silkworm, Bombyx mori, was investigated. An oral application of the chemical to the silkworm from the 2nd- to the 5th-instar larvae delayed the larval development upto more than 40 days and increased the larval body weight in the range of 1.1 to 1.7 folds. When the chemical was orally applied to the final instar larvae, spinning and pupation were prevented, and consequently permanent larvae occurred. The weight of a cocoon and its shell of silkworm(bombyx, mori, L) increased following the application of fenoxycarb to the 2nd- and the 3rd-instar larvae.
Studies on the Biological Activities of Phytoecdysone from Acyranthes japonica I. Effects of Molting Hormone Extracted from A. japonica on Mounting and Cocoon Characters of Bombyx mori
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 127~131
A crude crystal of phytoecdysone was obtained 355 mg per Kg dry radix of A. japonica, and it was identified to
-ecdysone by TLC. Feeding silkworms on mulberry leaves sprayed with the extract, mounting time shortened and pupation ratio improved. The feeding effects of the extract was differed according to the rearing seasons, spring and summer. In spring season, only mounting time shortened without any difference in pupation ratio from the control. In summer season, not only mounting time shortened, but also pupation ratio remarkably advanced.
Effect of Some Swelling Agents on Soaking Treatment of Raw Silk
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 132~136
This study was carried out to elucidate the effective of some swelling agents on the soaking treatment of raw silk. The swelling of raw silk is commonly practiced by soaking in warm water, However, it is not enough to weaving of raw silk. Therefore, the combination of some chemical agents were tested to improve the swelling ratio of raw silk. The pretreatment of raw silk in 0.4N sodium carbonate aqueous solution before soaking in the mixed solution of Emulon 1 g/l, Emanol 0.5 g/l and 0.04N sodium silicate increased the swelling ratio by 57%, compared to the nontreatment. In SEM observation, the surface of raw silk soaked in swelling agents was swollen and smoothed.
The Study on the Sericin Fixation Mechanism
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 137~141
The sericin fixation of raw silk by glutaraldehyde solutions with catalyst(serifix B) was done and the effect of sericin fixation by catalyst on reaction mechanism, whiteness and physical properties were investigated and discussed. The obtained results were summarized as follows; 1) The complete sericin fixation were obtained by glutaraldyhyde solution regardless the concentration of catalyst. 2) The tenacities of sericin fixed silk increased in comparison with that of nontreated silk. 3) There were not constant tendency in elongation of sericin fixed silk in comparison with nontreated silk. 4) The whiteness of sericin fixed silk treated glutaral-silk in comparison with nontreated silk. 5) FT-IR spectra were quite different from sericin fixed reagent and catalyst.
Preparation and Structural Characterization of Silk Fibroin Powder and Film
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 142~153
This study is undertaken to investigate proper condition and dissolution method of silk fibroin to use it functional material as powder or membrane. Silk fibroin was dissolved with calcium chloride ethanol aqueous solution and hydrochloric acid. When silk fibron was dissolved with calcium chloride ehanol aqueous solution, main chain of silk fibroin was degradaded and molecular conformation was changed. Silk fibroin powder was made from silk fibroin solution. It showed lower thermal decomposition temperature and crystallinity than those of native silk fibroin. And Its molecular conformation was random coil structure. By acid gydrolysis, main chain of silk fibroin was attacked randomly. Silk fibroin powder from hydrolysate showed high crystallinity and thermal decomposition temprature.
-form molecular conformation was found by IR and X-ray diffraction. Silk fibroin powder form dissolved part with hydrochloric acid showed low thormal decomposition temperature but high crystallinity. During acid hydrolysis, transition of molecular structure of silk fibroin occurred, and it changed to
-helix. Silk fibroin film was achieved by casting silk fibroin solution by ehanol solution or saturated vapor treatment, and its molecular conformation changed to
Dyeing Behavior of Silk/CDP Mixed Filament with a Cationic Dye
Choe, Jong-Mun ; Gwon, Hae-Yong ; Park, Yeong-Hwan ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 154~160
Dyeing behavior of Silk/Cationic dyeable polyester(CDP) mixed filament was investigated by using a cationic dye. The effect of pH, temperature and additives such as carrier, levelling agent and salt were examined for each silk and CDP component of mixed filament in order to find out the optimum dyeing condition. Based on these results, the dyeing behavior was investigated for Silk/CDP mixed filaments concering various dyeing parameters. The dye adsorption was significantly changed on the dyeing temperature, carrier addition and pH of the dyebath. Specially, the dye migration phynomena were observed for a mixed filament, showing that the dyes initially observed on the surface of silk fiber migrate to the CDP component during a dyeing process. The dyeing of Silk/CDP mixed filaments accompanied by dye migration and as a result, dye adsorption can be developed only for a CDP component. Therefore, the control of dyeing temperature is most important for a Silk/CDP mixed filament, in order that both silk and CDP component are able to be dyed by a cationic dye simultaneously in one bath/one dye system.
Dyeing of Silk and Ramie Fabric with Natural Dye(1) - The traditional dyeing method of safflower -
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 161~166
Safflower is natural red dye largely used for dyeing on protein and cellulose fabric. It contains safflower yellow and carthamin red. Safflower yellow is water-soluble dye, while carthamin red is soluble in alkaline condition. Therefore the former was extracted by cold water. Cartamon obtained by adding acidic solution to carthamin red shows the original hue of safflower. In this study, the condition of extraction with bean stem ash solution and dyeing behavior of carthamon in safflower were examined by using the traditional dyeing method. The relationship between the dye-uptake(K/S) of silk and ramie fabric and the various extractions and dyeing conditions was investigated.
Identification of Beauveria spp. Isolated from Mulberry Longicorn Beetle (Apriona germari Hope) using Polymerase Chain Reaction
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 167~171
To develope a microbial pesticide for the control of mulberry longicorn beetle, Apriona germari, Beauveria spp. were isolated from the infected Apriona germari larvae. The morphology of Beauveria spp. was observed by phase contrast and scanning electron microscope. In addition, the Beauveria spp. isolated from Apriona germari were identified by the random amplification of polymorphic DNA using polymerase chain reaction. The results showed that the Beauveria spp., SFB-1A and SFB-3A, isolated from Apriona germari were identified with B. bassiana and B. brongniartii, respectively, suggesting that the random amplification of polymorphic DNA is effective for the identification of Beauveria spp.
Development of Liquid Culture Media for the Mass Production of Beauveria bassiana Blastospore
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 172~175
To develope a liquid culture media for the mass culture of Beauveria bassiana blastospore, wheat bran and soybean cake were selected as a carbon and nitrogen source, respectively. The composition and final concentration of wheat bran and soybean cake in liquid culture media were determined by the growth of B. bassiana blastospore. The results showed that the growth of B. bassiana blastospore was effective in the rate of 3 wheat bran: 2 soybean cake and in 5% of final concentration of the liquid culture media, suggesting that the liquid culture media using wheat bran and soybean cake are available.
Expression and Characterization of Three Types of
-Endotoxin Genes in Transformant, Bacillus thruingiensis PT0529
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 176~180
To characterize expression and formation of three type crystal proteins in transformant, Bacillus thruingiensis PT0529 was analysed by transmission electron microscope and SDS-PAGE according to growth. The results showed that the introduced crystal protein genes, rcyIVD and cytA, were well expressed at earlier stage than resident crystal proteins were also expressed with their own morphology. However, resident crystal protein of B. thuringiensis PT0529 was smaller than that of wild type B. thuringiensis NT0423, suggesting that resident crystal protein production was interfered with introduced two type crystal protein genes.
Enhanced Expression of Foreign Gene in Baculovirus-Infected Insect Cells Using a Silkworm Hemolymph
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 181~185
To enhance expression of foreign gene by the novel expression vector, pBmKSK1, of Bombyx mori nuclear polyhedrosis virus, E. coli
-galactosidase gene expressing recombinant virus was infected in BmN-4 cells and various concentrations of silkworm hemolymph were added to the recombinant virus-infected BmN-4 cells containing fetal bovine serum. The expression efficiency of foreign gene was determined by
-galactosidase activity in the culture media. The results showed that the silkworm hemolymph was effective to expression of foreign gene in the BmN-4 cells, suggesting that the silkworm hemolymph could be substituted for fetal bovine serum in the BmN-4 cells to enhance expression of foreign gene.
Cryopreservation of Mulberry Winter Buds in Liquid Nitrogen
Bang, Hye-Seon ; Lee, Wan-Ju ; An, Yeong-Hui ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 186~187
Effects of Growth Regulators on Developmental Physiology of the Silkworm, Bombyx mori II. Effect of fenoxycard on hatchability of the ailkworm's eggs
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 188~190
The eggs of the silkworm, Bombyx mori, were treated topically with 10-3, 1-0-4, 10-5 aqueous Insegar and the hatchability was checked. The chemical affected all the tested developmental stages, but the results varied according to the stages and the degree of density. The hatchability was reduced upto 0% for the eggs treated at the 1 and 3 day stages, compared to 97% of control eggs.
Defects in Tussah(Tasar) Silk Yarn
Chattopadhyay, R. ; Subrata Das, M.I.Gulrajani ; Sen, Kushal ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 191~196
The aim of the present work is to investigate the level of faults present in tussah silk yarn as detected on an Uster instrument for four different varieties of commercially available tussah(tasar) silk yarns. The structure of these faults were analysed further so as to understand the mechanism and source of their generation.
A Support on the Technological Performance of Hamchang Silk Fabric - Present Condition and Direction for the Development -
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 197~205
누에 핵다각체병 바이러스를 이용한 유용물질 생산
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 206~219
누에 핵다각체병 바이러스에 의한 발견 벡터 시스템 개발
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 220~227
누에 특이 유전자의 탐색 및 발견
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 228~234
Recent Advances of Nutritional Physiology and Artificial Diet of the silkworm, Bombyx mori, in Japan
Horie, Yasuhiro ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 235~243
Recently, the cocoon production is reducing very steeply in Japan. The main reason for this cocoon reduction is due to high labor cost and the production expense is apt to rise year by year. Accordingly, the improvement of cocoon productivity by retrenchment of the production expense is intensively required in my country. Therefore, the silkworm rearing on the artificial diet is largely expected as the innovation techniques of sericulture. Since rearing of the silkworm on artificial diets has first been achieved in 1960, and the silkworm larvae were reared throughout all the instars on artificial diets(Fukuda et al., 1960, Ito & Tanaka, 1960). The artificial diets used at this time contained 50% or more of dried, pulverized mulberyy leaves as one of the main ingredients, and the composition was rather simple. When reared on these diets, larval growth and development were retarded, small cocoons appeared, and the adults laid only a small number of eggs. At first, we would like to study about nutritional requirement of the silkworm, using the chemically defined diet which prepared artificially. Subsequently, attempts were made to improve the diets by replacement of crude ingredients with possibly purer compounds, as mentioned later. Before giving the details on individual nutrient, I would like to summarize about the outline of utilization flow of various nutrients through the larval-pupal development and these daily quantitative requirements per body weight in the silkworm when they were reared on mulberry leaves.
Niino, Niino ; Shirata, Kazuto ; Oka, Seibi ;
Journal of Sericultural and Entomological Science, volume 37, issue 2, 1995, Pages 244~246