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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
KOREAN JOURNAL OF CROP SCIENCE
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Volume & Issues
Volume 39, Issue 6 - Dec 1994
Volume 39, Issue 5 - Aug 1994
Volume 39, Issue 4 - Aug 1994
Volume 39, Issue 3 - Jun 1994
Volume 39, Issue 2 - Apr 1994
Volume 39, Issue 1 - Feb 1994
Selecting the target year
Effects of Sowing Date and Cutting Time on Feed Value of Rye in Paddy Field
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 519~525
This experiment was conducted to investigate the effects of sowing date and cutting time on feed value of rye in paddy field at Yesan from Oct. 1990 to June 1991. The field experiment was sown 5 times at 10 day intervals from Oct. 5. The content of crude protein, digestible protein, total digestible nutrient(TDN), minerals(P, K, Ca, Mg), and energy(ENE, NEL, NEM, NEG) were decreased due to earlier sowing, while the content of acid detergent fiber (ADF) and neutral detergent fiber(NDF) increased. On the other hand, the yields per unit area for crude and digestible protein, TDN, minerals, and energy increased due to earlier sowing, but there was no significant difference among the plots sown on Oct. 5 through Oct. 25. The highest yield of crude protein was shown at late flowering stage, digestible protein and net energy gain (NEG) at heading stage and TDN at milk stage respectively.
Photosynthetic Response of Rice Plant to Changes of Air Influx Rate into Photosynthetic Chamber
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 526~530
This study was conducted to investigate photosynthetic response to four sequential air influx rate with rice(Oryza sativa L.)plants moved from a natural condition to constant condition with automatic regulation selected environmental variables on 13th~15th days after anthesis. In time course of photosynthetic response to increasing air influx rate(200-280-360-440 ml / min.), stomatal conductance decreased rapidly at the beginning after treatment and then oscillated with a free-running period of a approximately 1 hour to 1 hour 30 minutes until reached up to steady-state condition. Similar change was also observed
assimilation rate. Stomatal conductance decreased throughout the air influx rate sequence, but the rate of decrease was similar to the decrease in
assimilation rate observed under continuous air influx rate conditions. In starch granules during grain filling period under air influx rate(440 ml / min.) , compound starch granules were loosing and a number of hollows were observed in surface of single starch granules. Evidences from several approaches indicate that synchronization of stomatal conductance and
assimilation rate was closely inter-related tinder increase of air influx rate and increase of air influx rate influenced the
uptake in photosynthetic processes and compound starch granule, as 'end products' of photosynthesis.
Effect of Drainage Duration before Seeding and Furrow Depth on Seedling Establishment and Growth in Direct Drill Seeding Culture of Rice on Puddled Soil
Dong-Sam Cho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 531~536
Drainage duration before seeding and furrow depth desirable for establishment and growth in direct drill seeding of rice on puddled paddy soil were investigated. Furrow depths tested were 2, 4 and 6cm in combination with drainage duration 2, 4, and 6days. Dongjinbyeo was used and seeded on May 11, 1993. Seedling establishment were improved by longer drainage duration and by shallower furrow. Lodging occurred moderately at furrow depth of 2cm with 4 and 6days of surface drainage before seeding. This lodging might be attributable to the shallow burying of shoot below soil surface. Rice yield was highest at furrow depth of 4cm with 4days drainage before seeding. In considering seedling establishment and yield, desirable drainage duration before seeding and furrow depth might be 4days and 4cm, respectively. Cone(115g) penetration depth, dropped at 1m above soil surface, was 6 to 7cm on the date after 4days drainage before seeding.
Callus Induction and Plant Regeneration in Angelica koreana MAX.
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 537~541
This study was conducted to investigate the possibility of callus induction and plant regeneration from immature inflorescence, stem and petiole of A. koreana MAX. which is worth enough to be used as food and medicine. The callus induction and its proliferation was best when immature inflorescence segments were placed on MS medium supplemented with 2, 4-D 2mg / l. The white and compact embryogenic callus on the surface of dark yellow and soft callus which was induced from immature inflorescence segments came into being only on MS medium with 2, 4-D 1mg /l and 2mg /l, but didn't come into being on the other ones. The shoot came into being effectively from callus derived from immature inflorescence on MS medium mixed 2, 4-D 0. 1mg /l with Kinetin 1mg /l, and 2, 4-D 0.5mg /1 with Kinetin 2mg /l. Immature inflorescence was most appropriate material for callus induction and plant regeneration.
Extraction Methods and HPLC Analysis Conditions of Paeoniflorin in Peony, Paeonia lactiflora Pall.
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 542~547
To find out the most reasonable analysis conditions of paeoniflorin, different paeoniflorin extraction methods and various UV detector wavelengths were conducted with paeonia radix of 4-year old Euisung local variety. The most reasonable paeoniflorin extraction time by reflux apparatus was 1hr. and by ultrasonic apparatus was 3hrs. and those methods were completed only once. Concentration of paeoniflorin by reflux apparatuses at 1hr. and 2hrs. of extracting time were higher than those of ultrasonic apparatus, and the differences were highly significant. However, the differences of paeoniflorin concentration at 3hrs. and 4hrs. in two methods were not significant. In comparing paeoniflorin concentration of many lines, ultrasonic extracting apparatus was more simple and effective than the reflux apparatus. Paeoniflorin was more reasonable sensitivity at 240nm, and albiflorin was 254nm by HPLC. When paeoniflorin and albiflorin were analyzed simultaneously, 254nm was more stable than any other wavelength.
Tolerance of Rice, Soybean, and Hot Pepper to Simulated Acid Rain at Different Growth Stages
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 548~555
To compare the tolerance of crops to acid rain at different growth stages a simulated acid rain (SAR) of pH 2.7 was applied to rice, soybean, and hot pepper from vegetative growth stage to harvest (Veget.-Harvest) and from reproductive growth stage to harvest (Reprod.-Harvest). Visual damages of crops by SAR were greater in the order of rice < hot pepper < soybean and greater at Veget.-Harvest than at Reprod.-Harvest treatment. Chlorophyll content of all crops was greater in the order of Veget.-Harvest < Reprod.-Harvest treatment < control, but photosynthetic activity was not affected by SAR treatments. Nitrogen concentration and uptake of rice plants at harvest were similar among SAR treatments, but those of soybean and hot pepper were greater at Veget.-Harvest treatment than at Reprod.-Harvest treatment or control. Sulfur concentration of all crops was not affected by SAR treatments, but total sulfur uptake of soybean was greater in SAR treatments than untreated control. Grain yield of rice and soybean was not affected by SAR although grain fertility, percent ripened grains, and 1,000-grain weight of rice at Veget.-Harvest treatment were lower compared with Reprod.-Harvest treatment or control. Fruit dry weight of hot pepper was greater in the order of Veget.-Harvest < Reprod.-Harvest < control due to decreased fruit number per plant and average fruit weight. At one time application of SAR at flowering stage, brown spots were observed on the spikelets of rice at below pH 2.3. Petals of soybean and hot pepper were wilted at pH below 1. 7 and 2.0, respectively, but fruit setting was not affected by the pH of the SRA.
Tolerance of Crops to Simulated Acid Rain at Vegetative Growth Stage
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 556~563
To compare the tolerance of crops to acid rain of simulated acid rains(SAR) of three pH levels (3.0, 4.5, and 6.0) were applied to rice, corn, soybean, adzuki bean, hot pepper, tomato, sesame, barley, wheat, Chinese cabbage, radish, lettuce, and spinach for 30 days from 20 days after emergence at two-day interval with 10mm at a time. No visual damages were observed. Also, no alteration of ultrastructure was observed although some lightly stained lipid granules were observed in the chloroplasts of sesame, soybean, and adzuki bean at the SAR treatment of pH 3.0. As pH of SAR decreased, chlorophyll content increased in adzuki bean, decreased in rice, tomato, and spinach, and similar in the other crops. Photosynthetic activity of adzuki bean increased, while decreased in Chinese cabbage and barley as pH of SAR decreased, and similar in other crops. Concentration and uptake of N were not affected by SAR treatments in all crops except tomato and barley. When a strong SAR of pH 2.0 was applied, rice, corn, sesame, tomato, barley, and wheat were relatively tolerant, while adzuki bean, hot pepper, soybean, Chinese cabbage, lettuce, radish, and spinach were susceptible in terms of visual damages.
Change in Storage Protein during Germination of Peanut Seed
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 564~570
This experiment was conducted to determine seed storage protein pattern and structural character of differed peanut cultivars during germination. Soluble protein content in both Namdae and Daekwang cultivars remarkably decreased in cotyledon site at 2 or 3 days after incubation(DAI) and in embryonic axis site at 1 or 2 DAI, showing 28∼29% in cotyledon site and 10% in embryonic axis site at 5 DAI. Protein subunits such as 66, 43, 40 and 35.5kD bands in the cotyledon site of Namdae and Daekwang cultivars disappeared, but 21.5-23kD band disappeared slightly, but low polypeptide band such as 14-16kD increased gradually, and the same trend has been obserbed in embryonic axis site during 2 DAI. The amount of new protein formed during germination period was highest in cotyledon site at 3 DAI, and in embryonic axis site at 2 DAI. 16kD bend detected in cotyledon site of Daekwang cultivar during germination.
Effect of Embryo Age, Growth Regulators, and Low Temperature Treatment on Regeneration and Plant Growth in Immature Embryo Culture of Barley
Byong-Ho Chang ;
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 571~576
This study was conducted to determine the effects of embryo age, growth regulators, low temperature treatment on regeneration, plant growth, and heading in immature embryo culture of Barley. Shoot and root development was more in older than in younger excised embryos, and more in a medium without kinetin than in one with kinetin. The rate of survival was higher on medium without growth regulators and lower on medium with kinetin 5 mg/L because of retarded plant growth. Embryo age and media did not completely replace low temperature treatment. Twenty- and 14 day-old embryos responded by flowering after 4 weeks of vernalization. Embryo culture at 14- and 20 days after anthesis coupled with 4-week cold treatment shortens generation time of barley. When 20 day immature embryos of barley (cv. Olbori) was treated low temperature treatment for 4 weeks, the rate of heading was better than the other treatment.
Growth and Yield of Forage Crops Affected by Soil Texture in Upland Diverted from Paddy Field
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 577~584
A field trial was carried out to select suitable crops for diverted upland from paddy field and to investigate response of several forage crops to soil properties and ground water levels of the diverted upland at Suwon area of Korea in 1992 and 1993. Experiments were conducted in sandy loam plot and comparatively clay loam plot having higher ground water level. Rye (Paldang), triticale (Shinki), italian ryegrass (Tetraflorum) were used as wintering forage crops and maize(Suwon 19), sorghum-sudangrass hybrid(Pioneer855F), pearl millet(Suwon 6), japanese millet (King) were used as summer forage crops. Growth and yield of forage crops were better and higher in sandy loam soil having low ground water level. Among wintering forage crops, triticale recorded the highest forage yield. Rye showed high forage yield in sandy loam soil and italian ryegrass hardly survived in diverted upland of Suwon area during winter. Among summer forage crops, forage yield of sorghum-sudangrass hybrid was highest. Yield of japanese millet was not affected by soil conditions in both plots. Yields of pearl millet and maize remained relatively low in both plots.
Growth of Maize and Sorghum-Sudangrass Hybrid Affected by Soil Texture and Ground Water Levels
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 585~593
This study was conducted to know optimum ground water level for maize(Suwon 19) and sorghum-sudangrass hybrid(Pioneer855F) and investigated effect of different soil types and ground water levels on growth of above two crops at containers were controlled so as to be 25, 35, 50, 70 and 100cm from the soil surface. Both crops showed better growth in sandy loam soil. Optimum ground water level for maize was l00cm and for sorghum-sudangrass hybrid was 70cm in sandy loam soil. Clay loam was unfavorable for both crops even though low ground water level maintained. Sorghum-sudangrass hybrid was adapted better to clay loam soil and high ground water levels. In microscopic study on root anatomy of both crops, destructed cortical tissues were observed. Frequency of the tissues was higher in maize than in sorghum-sudangrass hybrid and higher at mid or tip parts than basal parts of roots in both crops. Arrangement of cortical cells of roots in sorghum-sudangrass hybrid were more regular than those of maize. In root anatomy, no consistent trend with soil types or ground water levels was detcted.
Carbon-Nitrogen Transport in Response to Control of Leaf-Pod Ratio in Soybean
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 594~601
Effects of translocation on seed yield and carbon-nitrogen compounds at five leaf-pod ratios of soybean [Glycine max. (L.)Merr. ] culti bars, 'Paldalkong', 'Baekunkong', and 'Danyeobkong' were measured. The upper 50 and lower 50% of leaves and pods were subjected to treatments at growth stage R3. Three soybean cultivars showed the similar trends on changes in dry matter accumulation and on the contents of soluble sugar, starch and protein in seeds among the treatments. Mean stem dry weight was increased with upper leaf-lower pod and lower leaf-upper pod removals, and decreased with upper leaf and lower leaf removals. Leaf dry weight was appeared higher at the upper leaves among the treatments. Seed numbers and dry weights were decreased with leaf and leaf-pod removals, and were higher in lower part of the plants. Soluble sugar and starch contents in seeds were also showed slightly higher in lower part. Protein content of seeds was decreased in upper part with upper leaf removal and in lower part with lower leaf removal, however, that of the upper seeds was the highest with lower leaf removal. The results of this study are assumed that carbon and nitrogen compounds were translocated opposite directions and protein source was weak in remobilization for the long distance transport during the reproductive growth period of soybean plants.
Estimation of Cured Leaf Area and Leaf Weight Based on Leaf Length and Width in Burley Tobacco Plant
Chang-Hwan Cho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 39, issue 6, 1994, Pages 602~606
The study was conducted to investigate the relationships between the value of fresh leaf lengh
width and actual fresh or cured leaf area, Cured leaf weight of cutter and leaf in Burley tobacco plants. In all tested varieties, Actual fresh leaf area or cured leaf area, cured leaf weight was high significantly correlated with the value of fresh leaf length
width. The linear regression equation between them could be exploited for rapid and easy estimation of either fresh or cured leaf area, cured leaf weight. Highly significant correlation between fresh leaf area and cured leaf area or cured leaf weight was confirmed and a linear regression equation was also obtained for easy estimation of cured leaf area or cured leaf weight.