• KOREAN JOURNAL OF CROP SCIENCE
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• v.36 no.2
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• pp.177-184
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• 1991

Soybean cultivars for bean sprouting, and for cooking with rice are related closely with Korean dietary tradition, but their yields have been kept in low level. The yielding responses of Danyup, a cultivar for bean sprouting and Gumjung, a cultivar for cooking with rice were compared with Paldal as standard cultivar in planting density within 10 to 80 plants per ㎡. Yield of Paldal increased as planting density increased from 10 plants up to 80 plant/㎡. But, Danyup reached at threshold as planting density reached up to 40 plants/㎡. Gumjung did not have significant difference in yield within planting density. Danyup had the highest yield, 445 kg/l0a at 80 plants/㎡. The highest yield of Paldal was 406kg/10a at 40 plants /㎡ while Gumjung had 373kg/ l0a at 40 plants. The yield responses of cultivars were influenced by canopy structure and light utilization. Paldal had short and straight canopy with determinate growth habit responded well at the heavy density, and had 6.2 in critical LA!. But Gumjung, tall and dense canopy with indeterminate growth habit had limited utilization of light within canopy with 5.4 in critical LAI and high rate of lodging. Gumjung was concluded as a low yielding cultivar, since it did not have good response to increasing source size and sink number.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.34 no.1
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• pp.106-112
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• 1989

To investigate varietal differences of anther size, pollen shape, pollen fertility and other agronomic characters under low temperature condition. twenty rice varieties (5 Tongil and 15 Japonica type) were treated at 19$^{\circ}C$ water temperature from booting to heading stage. There was varietal difference of low temperature response which was indicated by the delayed heading, the shortening of culm and panicle length. and the decrease of grain fertility and yield potential resulted from cooling treatment at booting stage. The varieties with low fertility damaged by the low temperature treatment at booting stage showed low pollen density per anther. small or abnormal anthers and pollen, and many sterile pollens. Anther length was correlated significantly with the number of pollens per anther and pollen fertility.

• Applied Biological Chemistry
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• v.30 no.2
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• pp.179-185
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• 1987

The physicochemical properties and characteristics of sweet potato starches which were isolated from the six varieties were investigated. The shapes of starch granules which observed through photomicroscope and scanning electron microscope lucre round and polygonal, but those of the Shinmi were most polygonal, and the average diameters were in the range of $10.4{\sim}14.2$ microns. The amylose contents were between 25% and 28%, and blue values and alkali numbers were in the range of $0.29{\sim}0.36$, $7.0{\sim}12$, respectively. The swelling power and solubility patterns of the starches were negligible until $50^{\circ}C$, thereafter it increased rapidly and the Eunmi showed highest water binding capacity of 211.6%. Amylogram pattern of 6% starch solutions were similar to no peak viscosity, but maximum viscosity varied widely with varieties. A significant positive correlation was observed between amylose content and average gelatinization temperature. Taste and texture of the steam cooked sweet potatoes were negatively and positively correlated with moisture and amylose contents, respectively, while those of the microwave cooked sweet potatoes were only positively correlated with amylose contents.

• Korean journal of applied entomology
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• v.36 no.3
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• pp.206-214
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• 1997

The genetic relationships among the twenty parental silkworm, Bombyx mori strains authorized in Korea were evaluated using RAPDs-PCR(Random Amplified Polymorphic DNAs-Polymerase Chain Reaction). Twenty-six different 10-mer oligonucleotide primers were used to screen genetic characteristics of parental twenty silkworm strains by RAPD-PCR analysis. 24 primers showed different banding patterns among the strains. Based on these RAPD patterns, the genetic relationships among the silkworm strains were analyzed by UPGMA(Unweighed Pair-Group Method with Arithmetic average) method. The phylogenetic relationships in the twenty silkworm strains were classified into two major sub-groups at the genetic similarity coefficient of 0.60. The first sub-group included Jaml13, Jaml 19, Jaml20, Jam123, Jam1 25 and Jam 127. Jamll4, Jam1 2 I, Jam 122, Jam 124, Jam1 26, Jam 128, Jam129, Jam 130, Jam 131, Jam1 32, Jam133, Jam134, Jam301 and Jam302 were included in the 2nd group. The genetic distance values among Jam1 14, Jam120 and Jam127 were lower than those among the other strains, while Jam129 is very closely related to Jam131 as showing coefficient value of 1 .O.

• Applied Biological Chemistry
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• v.11
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• pp.123-130
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• 1969

Five varieties of sweetpotatoes recommended in Korea were investigated with respect to the storing capacity, resin content and the possibility of developing sweetpotato chips as a new processed food item. The results are summarized as follows: 1) Two varieties, Suwon No. 147 and Chun-Mi were more resistant to chilling injury and soft-rot decay than other varieties. 2) The contents of resinous and polyphenolic substances were quite different depending upon the variety. 3) Sweetpotato chips of different color were made from different varieties and rapeseed oil was found to be the best as frying oil. 4) Best conditions to prepare sweetpotato chips with fresh color and proper texture were to dip slices of 1-2 mm thickness in 0.25% sodium bisulfite solution at $40^{\circ}C$ for 30-40 minutes and to subject to deep frying in an oil bath at $150-160^{\circ}C$ for 2.5 to 3.5 minutes. 5) Polyethylene-cellophane film as packing material of sweetpotato chips was the film in the moisture proof and film-impact tests.

• Applied Biological Chemistry
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• v.7
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• pp.79-84
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• 1966

1. In order to elucidate the differences between varieties of Korean soybean, forty-nine subjects were examined for their chemical constituents. Their proportions varied considerably with the differences in variety. The moisture varied from 10.93% to 12.57%(aver. 11.95%), protein; 33.79% to 47.00%(aver. 39.8%) crude fat; from 16.32% to 24.79%(aver. 19.2%), crude fiber; from 3.03% to 5.57%(aver. 3.98%), ash; from 3.95% to 5.23%(aver. 4.6%) and nitrogen free-extracts (earbohydrates); from 16.58% to 26,81% (aver. 20.57%) Chemical composition of soybean was affected by the varieties as well as their localities of growth. 2. Of the total protein, 33.26% based on the soybean meal was soluble protein and 1.94% insoluble protein in average.

• Journal of Sericultural and Entomological Science
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• v.53 no.2
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• pp.87-91
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• 2015

There is no specific data on Entomogenous fungus (DongChungHaCho) in accordance with the silkworm varieties, despite of very high value industrial use as functional materials at domestic and abroad. In this study, we investigated culture condition and characteristics of Paecilomyces tenuipes in 3 silkworm cultivars and 2 specific silkworm breeds. Infection rate of P. tenuipes for silkworm varieties was the highest Kumokjam, followed by Baegokjam, Daeseongjam, Golden silk, Yeonnokjam in that order. The optimum culture conditions were as follows: dark condition, $22^{\circ}C{\pm}1$, and about $4cm^2$ in planting density per pupa. Also, we have developed annual production technologies of P. tenuipes. First, in order that the moisture content of the infection pupa became 3% or less in the natural condition. Second, the dried pupa must be vacuum-packed and was kept under $4^{\circ}C$. Finally, by restoring the moisture content of the dried pupa and culture in optimal condition, the technique for annual production of the P. tenuipes was achieved. Therefore, we expect that the use of Kumokjam and annual production technique will contribute significantly to farm income.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.5
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• pp.449-463
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• 1990

To obtain the basic informations on quality improvement, seed protein and amino acid composition were analyzed in 460 strains of perilla germplasm. Among the tested strains, total protein content ranged from 17.9% to 28.1 % with the 23.6% of varietal means. Form the experiment, Namji, Sandong, and Eunjin were selected as high protein strains of which content was as high as 28.1%. In protein content, collected strains from Jeonnam province showed highest, and was not significantly different by maturity, but this characteristics showed differences by seed coat color and 1,000 seed weight. The significantly negative correlation was observed between protein content and seed setting ratio. However it was observed that significant and high positive correlation between protein and oil content. A calibration for an Infra-Alyzer 450 using log reflectance readings at 2208, 1982, 1940 and 1722nm could be used without adjustment for the measurment of the protein content in perilla with a standard deviation of differences against micro-kjeldahl of 0.27%. The amino acid composition of perilla was similar to the other oilseed crops, and showed a relatively high lysine and methionine content. Further, amino acid composition of perilla seed was exellently characterized with bal ance and higher than FAO recommendation. Major amino acids were indentified as a glutamic acid and arginine in perilla seed protein.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.6
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• pp.506-513
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• 1992

Several experiments were conducted to classify the variablity of field emergence rate among the major soybean(Glycine max. (L) Merril) cultivars. The results obtained are summerized as follows. The speed of emergence is highly correlated with diameter of hypocotyl. As increasing the seed depth, emergence percentage of small seed is higher than that of large seed, and emergence of large seed at seeding depth 5cm is higher than that of small seed, at seeding depth 7cm. Emergence percentage in clay, clay : sand :(1 : 1), sand : vermiculite(1 : 1), clay : (1 : 1), sand, vermiculite are 65, 80, 84, 89, 90 and 91%, respectively. As the soil water potential was decreasing from-0.1 to-0.5 bar, emergence percentage is increasing. The highest emergence percentage was shown at -0.5 bar, and the lowest emergence percentage at -0.7 bar.

• Korean Journal of Food Science and Technology
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• v.21 no.1
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• pp.1-8
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• 1989

Ten cultivars of malting barley grown at four locations were malted and assayed for six enzymes involved in the degradation of nucleic acids. Among these enzymes were deoxyrinonuclease, ribonuclease, phosphodiesterase, 3'- and 5'- nucleotidases and phosphomonesterase. Activities of all enzymes in five-day malts were significantly affected by variety and location of growth. The average levels of ribonuclease, deoxyribonuclease, 3'-nucleotidase and 5'-nucleotidase of 80 five-day malts were 11.2, 5.7, 5.6 and 1.2 units per gram of malt, respectively. Six-rowed barley malts contained higher levels of deoxyribonuclease, phosphodiesterase and 3'-nucleotidase than those of two-rowed barley malts, while two-rowed barley malts contained significantly higher ribonuclease levels than those of six-rowed barley malts.