Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Sericultural and Entomological Science
Journal Basic Information
Journal DOI :
Korean Society of Sericultural Science
Editor in Chief :
Volume & Issues
Volume 36, Issue 2 - Dec 1994
Volume 36, Issue 1 - Jun 1994
Selecting the target year
On the Fertility of Several Polyploidy Mulberries, Morus, Fructified by Natural Cross
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 97~101
The fertilities of pyloploidy mulberries and the germination abilities and shape of poliploidy mulberry seeds fructified by natural cross were investigated and the results are as follows. Regarding the size of seeds, that of the tetraploid was the biggest and that of hexaploid was the smallest among the investigated polyploids. Those of diploid and triploid ranged between those of tetraploid and hexaploid. The fertilization rates of the varieties of Shinkwangppong and Cheongunppong, which were triploid, were 25.4 and 55.0%, respectively, and Shinkwangppong showed 10.2% of cross rate, but Cheongunppong did not have germination ability. The tetraploid seeds showed 61~68% of fertility and 30~54% of cross rate. The Puksan No. 2, which is hexaploid, had about 43% and 7% in fertility and cross rate, respectively. The germination abilities of floating seeds of diploid and tetraploid were comparatively high, but the floating seeds of triploid and hexaploid did not have germination ability. The seeds of diploid had a high fertility of 81~95% and a comparatively high cross rate of 47~74%.
Comparison of Leaf Productivity in Various Densities of Plantation with Mulberry Saplings or Grafts
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 102~109
Profitability was analysed in the fields of various planting densities from 1,666 trees/10a to 4,166 with mulberry grafts or conventional saplings under the consideration of leaf yield and quality. Leaf yield per tree decreased with the higher planting densities. Seasonal and total leaf yield per area, however, increased by 20 to 63% as a mean for 3 years in the densities of 2,083~4,166 trees per 10a than in the conventional density of 1,666 trees per 10a. The increase in leaf yield per area was not so high in the densities over 2,083. Leaf yield in the sapling plots was a little higher than that in the graft plots. Topping of shoot tip affected neither on the branch length nor on yield. Yield was higher in the planting spacing with single raws than in that with double raws. Quality of leaves in the densities from 2,083 to 3,333 trees per 10a was relatively good judged based on the results of the pupation rate and cocoon yield and quality
Mulberry Growth Promotion by Nitrogen Application under Abnormally Wet and Cool Weather Conditions
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 110~114
Abnormally cool and wet weather conditions during the summer of 1993 offered an opportunity to evaluate the effects of abnormal weather conditions on mulberry growth and to develop cultivation practicies to reduce leaf yield loss under the similar abnormal weather conditions. Different methods of nutrient supplementation were evaluated in Suwon and Kongju. Nitrogen was supplemented by foliar spray of urea(1.7%) or composite chemical fertilizer Jamsibiryo #8, or by the application of ammonium sulfate(60kg/ha) to the soil. During the period between the late June and the early September which corresponds to the mulberry growing season after summer pruning, mean temperature was 1.4
lower and precipitation 83mm higher than normal year. This weather condition in 1993 caused reduction in leaf yield by 16.4% than common year. Soil nitrogen content decreased due to higher precipitation. Leaf yield loss was reduced by the supplementation of nitrogen to the soil. Leaf nitrogen content increased with the foliar urea spray and nitrogen supplementation to the soil.
Inheritance of Feeding Response of the Silkworm, Bombyx mori, to MP-O Artificial Diet.
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 115~118
Differences of feeding response of 280 silkworm genetic stocks and 71 breeding lines to MP-O artificial diet and the mode of the inheritance were investigated. Feeding response to MP-O diet varied markedly between the silkworm varieties, and the non-normally distributed curve for the response was observed. From the genetic analysis, the high feeding response to MP-O diet was recessive to the low feeding response. Therefore it is considered that the high feeding response of the newly hatched silkwrom larvae to MP-O diet is controlled by a recessive gene.
Physiological and Biochemical Studies on the Adult Haemolymph Protein in Lepidoptera. III. In visto and In vitro Synthesis of Adult Major Haemolymph Protein in the Silkworm, Bombyx mori.
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 119~123
By in vivo labelling of AMHP using[35S]-methionine, fat body culture and immunological analysis, it is proved that Bombyx adult fat body synthesizes 18K and 20K subunits of AMHP and releases them into haemolymph. Also these peptides are assembled to form native AMHP in the adult haemolymph.
Qualities of cocoon and Cocoon filament of the Precocious Trimolting Silkworm, Bombyx mori, induced by Trifumin
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 124~129
In order to investigate the possibility of fine-size cocoon production by the use of imidazole compound, Trifumin, the cocoon and cocoon filament qualities, dietary efficiency and fibroin component were examined. cocoon size, cocoon weight and cocoon shell weight of trimolter were smaller than those of tetramolter. Cocoon shell weight of trimolter was 58% and 26% of that of tetramolter in the 3rd instar treated larvae and in the 4th instar treated larvae, respectively. Amount of cocoon shell produced per 1g dry matter ingested was 94% and 85% of that of tetramolter in the 3rd instar treated larvae and in the 4th instar larvae, respectively. The effects of Trifumin on the reeling tests were different according to the stage of the treatment. When Trifumin was treated at the 3rd instar larvae, reelability of cocoon filament, amount of cocoon filament, size of cocoon filament, reelability percentage and raw silk percentage of cocoon were 100%, 60%, 60%, 97% and 90%, respectively. When Trifumin was treated at the 4th imstar larvae, most of reelability tests were inferior to those of the 3rd instar treated larvae, but reelavility percentage was increased 13%. The Trifumin treatment did not affect the electrophoretic patterns of cocoon fibroin.
Study on Technical System of Rearing Japanese Oak Silkworm, Antheraea Yamamai Cuerin-Meneville
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 130~137
This experiment was conducted to evaluate the reasonable rearing technique of Japanese oak silkworm under the different rearing condition as environment, feeding materials and rearing methods. The results are summerized as follows. The optimum temperature for the indoor rearing of Japanese oak silkworm was 25~26
a in young silkworm and 22~23
in grown silkworm, and generally in the condition of variable day/night temperature the growth of silkworm was faster than in that of constant temperature. The optimum relative humidity for it's growth was 80~90% at young silkworm stage and 60~70% at grown silkworm stage. The photoperiod was not affected to the growth of Japanese oak silkworm. The earlier brushing, the shorter the young silkworm stage, and the cocoon quality improved compared to the later brushing time. As a feeding materials aok (Auercus acutissima Crruthers) leaves were better than those of chestnut tree (Castanea Crenata Siebold & Zuccarini) and feeding value of cultivated oak tree leaves was better than that of natural oak tree leaves. The moving time when revealed the better cocoon production of Japanese oak silkworm from indoor condition to outdoor was 15 days after hatched, and the cocoon production was decreased by the earlier moving to outdoor.
Structural Characteristics and Physical Properties of Wild Silk Fibres; Antheraea pernyi and Antheraea yamamai
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 138~146
The structural characteristics of Antheraea yamamai and Antheraea pernyi silk were investigated by using x-ray diffraction method, IR spectroscopy and polarizing microscopy. The amino acid composition, fiber density, thermal decomposition temperature and glass transition temperature were also measured for relating these physical properties to the structure in comparison with those of Bombyx mori silk fiber. There was no significant structural difference between A. yamamai and A. pernyi silk fiber on an examination of x-ray diffraction curve and IR spectrum. Both of these wild silk fibers showed double diffraction peaks at the Bragg angle 2Θ16.7˚ and 20.5˚by x-ray diffraction analysis as well as IR absorption peaks for the bending vibration of specific groups related to ala-ala amino acid sequence. On the other hand, the x-ray diffraction curve and IR spectrum of Bombyx mori silk fiber are different from those of wild silk fibers, indicating different crystal structure as well as amino acid sequences. It showed under the polarizing microscope examination that the birefringence and optical orientation factor of wild silk fibers are much lower than those of B. mori silk. Also, the surface of degummed wild silk fibers was characterized by the longitudinal stripes of microfibrils in the direction of fiber axies. The amino acid composition, which is strongly related to the fine structure and properties, was not significantly different between these two wild silk fibers. However, the alanine content was somewhat less and polar amino acid content more for A. yamamai. As a result of fiber density measurement, the specific gravities of B. mori, A. pernyi and A. yamamai were 1.355~1.356, 1.308~1.311, 1.265~1.301g/㎤ in the order, respectively. The calculated crystallinity(%) was 64% for B. mori and 51~52% for wild silk fibers, which showed same trend by IR method in spite of somewhat higher value. The thermal decomposition behaviour was examined by DSC and TGA, showing that the degradation temperature was in the order of B mori, A. prernyi and A. yamamai at around 350
. It was also observed by TGA that the decomposition seems to proceed step by step according to their specific regions in the fiber structure, resulting the difference in their thermal stabilities. The glass transition temperature was turned out to be 220
for B. mori, 240
A. yamamai and 255
A. pernyi by the dynamic mechanical analysis. It is expected that the chemical properties are affected by the dynamic mechanical behavior in accordance with their structural characters.
Studies on Fabrics woven with Silk/Polyester Compound Yarn
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 147~151
This study was carried out investigate the characteristics of Habutae and Chiffon woven with silk and polyester(S/P) compound yarn. The S/P compound yarn could be produced by the automatic reeling machine with attachment of air jetting device, polyester yarn guider and tension control apparatus. The surface structure, tensile property and dyeing fastness of S/P compound fabric were examined for the fabric properties. Electron microscopy revealed that most part of S/P compound yarn was well interlaced and some silk part of compound yarn were hidden by polyester on an examination of surface of chiffon fabric. By the one bath and two step dyeing of disperse and acidic dyes, the colour fastness of S/P compound fabrics were 4 grade above. The tenacity and initial modulus of the finished S/P compound fabric were lower than those of grey and degummed fabrics, but reversed in elongation.
The Study on the Sericin Fixation by Formalin and Glutaraldehyde Mixture
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 152~156
The sericin fixation of raw silk by formalin and glutaraldehyde mixed solutions was done and the effect of sericin fixtion by various conditions on degumming ratio, whiteness and physical properties was investigated and discusse. The obtained results were summarized as follows ; The sericin fixation by 1% formalin solution and upward, regardlles the concentration of glutaraldehyde solution, improved the whitenes of raw silk to 96% level of non fixed raw silk. The decrease of whiteness by degumming was prevented effectively by treatment of formalin and glutaraldehyde mixed solutions. The complete sericin fixation was obtained by the treatment of mixed solution including above 0.5% formalin solution. The proper treatment of sericin fixation can make increase the values of tenacity and elongation of silk.
Expression and Morphology of Crystal Proteins in Bacillus thuringiensis subsp. kurstaki Cry-B
Park, Hyeon-U ; Kim, Ho-San ; Kim, Yeong-Hun ; Jin, Byeong-Rae ; Gang, Seok-Gwon ;
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 157~161
To investigate the morphology of Bacillus thuringiensis crystal proteins, two type crystal protein genes, cryIA(c) gene under the control of cryIA(b) gene promoter and cryIIA gene under the control of its own promoter, were transformed in B. thuringiensis acrystalliferous mutant strain and the transformants were characterized by SDS-PAGE and scanning electron microscopy. The expression and formation of crystal proteins in B. thuringiensis subsp. kurstaki Cry-B revealed that crystal proteins appear to have same molecular weight and morphology to those of wild type strain's, suggesting that the expression and formation of crystal proteins affected not by host cell or recombination of cryIA(e) gene under the control of cryIA(b) gene promoter but by only structural fragment of protoxin.
Scanning Electron Microscopy of the Tisues of Helicoverpa assulta Larvae intoxicated with Bacillus thuringiensis Protein Crystals.
Cheon Hyang Mi ; You ;
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 162~167
Surface changes of tissues caused by B. thuringiensis var. kurstaki-
-endotoxin intoxication of Helicoverpa assulta were observed by scanning electron microscopy. Bt-endotoxin crystals induced the erosion and disruption on the surface of all tissues tested. The results revealed that the toxin binds to all exposed plasma membranes without apparent specificity for particular membrane domains.
잠상산물의 고부가가치 용도개발 현황과 전망
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 168~175
잠업 부산물의 의약품(양약)으로의 응용
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 176~179
잠상생산물의 한의학적 활용과 가능성
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 180~181
실크의 비의류용 이용
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 182~185
A Consideration on a Mode of Inheritance of Feeding Behaviour to Artificial Diets in Silkworm, Bombyx mori L.
Murakami, Akio ;
Journal of Sericultural and Entomological Science, volume 36, issue 2, 1994, Pages 186~188