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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 31, Issue 4 - Dec 1986
Volume 31, Issue 3 - Oct 1986
Volume 31, Issue 2 - Jul 1986
Volume 31, Issue 1 - Apr 1986
Selecting the target year
Studies on the Growth Characters and Nutrient Uptake Related to Source and Sink by Cool Water Temperature at Reproductive Growth Stage II. Influence of Cool Water Irrigation on the Inorganic Element Content of Leaf Blades, Rachis Branches and Chaff of Rice
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 1~8
This study was investigated about influence of different cold water irrigation on the nutrient uptake of leaf blade, rachis branches and chaff. Longer duration of cold water irrigation increased total nitrogen content in leaf blade, branches and chaff but decreased the content of phosphate, potassium and silicate. The highest content of total nitrogen and phosphate showed at heading stage, that of potassium in leafblades and branches at heading but in chaff at maturing stage, and that of silicate at maturing stage. Inorganic element content in branches was similar with that in chaff in general. The excessive uptake of nitrogen by cold water irrigation caused decrease in the uptake phosphate, potassium and silicate showing clear nutrient disorder in the blades and chaff. High total nitrogen and low silicate in rice plants seemed to lead to degeneration of branches and spikelets, and to spikelet sterility. Degeneration and sterility appeared to be closely related to nutrient status of branches.
Rice Seedling Establishment for Machine Transplanting VI. Effect of Mulching Materials on Raising Rice Seedling at Tray for Machine Transplanting
Yong-Dea Yun ; Rae-Kyung Park ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 9~15
To establish an efficient light control method using three covering materials on tunnel shaped rice seed-bed at greening stage after seedling emergence, four rice cultivars, Nampungbyeo, Taebaegbyeo, Seonambyeo, and Seomjinbyeo were sown on 15 April and 10 May in 1983 and 1984 respectively. After seedling emergence by a simplified emerging methods the seedling boxes were moved onto tunnel shaped seed-bed which was covered with combined matrials of PE film, silverpoly sheet, and spunbonded polyester fabric. For machine transplanting of rice seedlings in cases of early season and optimum season seeding in central part of Korea, PE film tunnel with silverpoly mulched, and PE film tunnel methods with spunbonded polyester fabric mulched reduced injuries of non-parasitic seedling damping-off and a albinism as affected by it, protected rice seedlings from injuries by extremely low temperature in the night, and reduced less differences in diurnal temperature than those in the other covering methods. At late season seeding for double cropping system of paddy field in southern part of Korea, a single silver-poly or a single spunbonded polyester fabric-covered tunnel method showed good green seedlings, and prevent-ed extreme rising of diurnal temperature by light interception in the tunnel.
Inheritance of Waxy and Fractured Starch Endosperm of Barley
Chang-Hwan Cho ; Eun-Sup Lee ; Jai-Wook Shim ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 16~18
This experiment was conducted to know the genetic nature of waxy and fractured starch endosperm genes in 1983. F
seeds involve simple recessive gene(1：3) for the waxy and fractured starch endosperm genes, respectively. Also, association between waxy and fractured starch endosperm have shown to be segregated as expected to fit in the ratio 9：3：3：1 respectively of normal-nonwaxy： fractured-nonwaxy： normal-waxy： fractured-waxy showing the acceptable value of X
test of independence.
Seed Production Status in Ginseng Plantations
Jong-Chul Lee ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 19~23
To get the basic information about ginseng seed production, yield of seed and seed quality in 27 fields were investigated. Yield of seed ranged from 4 to 10 litres per 100 kan (180cm x 90cm). Ratio of under 4mm seed is 12%, 66% for 4 to 5mm and 22% for over 5mm. Seed weight and ratio of over 4mm seed showed the decreasing tendency with the increase of seed yield per unit area. The seed yield harvested from the selected mother plants was lower than that from all plants, but seed weight and ratio of over 4mm seed were high in fields using the selected mother plants. It showed a positive correlation between length and width of seed, but no correlation between thickness and length or width. Optimum yield for high quality seed appeared under the 7 to 8 litres per 100 kan.
The Effects of Fertilization Level on the Growth and Oil Quality in Sesame (Sesamum indicum L.)
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 24~29
Experiments were conducted to know the inorganic compound absorption of leaf, and the organic component, oil content, fatty acid composition of seeds by different fertilizer levels and growth stage of Pungn-yeonggage. Ripening rate and seed yield were highest under the standard of nitrogen fertilizer level. Nitrogen and potassium amount of leaves were highest at 20 days after seedlings, but there was no difference in phosphate between growth stages. Absorptions of nitrogen and potassium were increased by applying double amount of nitrogen fertilizer. Oleic fatty acid content was found highest under the double amount of nitrogen, phosphate and potassium fertilizer level, and linoleic fatty acid content was increased with double amount of phosphate fertilizer level.
Studies on the Mass Propagation of Pinellia ternata (Thunb.) Breit in Vitro
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 30~42
In order to find out the best media, explants and environmental conditions for induction of calluses and organogeneses of Pinellia ternata (Thunb.) Breit in vitro, various parts of adult have been cultured on Murashige & Skoog's medium containing various levels of 2,4-dichlorophenoxy acetic acid(2,4-D) and kinetin. The results obtained were as follows: Calluses were induced from the surface of apical meristem and leaf tissue. Formation and growth of calluses in petiole ex plants were best on the MS medium complemented with 2,4-D 2.0 mg/l and kinetin 0.2mg/l. But callus formation in stem ex plants of the nearest tuber was not induced at all kinds of media. Plantlets occured at all treatment except absence of growth regulator. Their numbers, size, leaf and fresh weight were promoted by 2,4-D 2.0mg/l and kinetin 0.2mg/l. Root growth was increased on the medium containing higher 2,4-D concentrations. Size and fresh weight of callus were increased at 25
compared with 10, 20 and 30
, respectively. Optimal pH value was at 6.0 for growth of callus. Morphological aberrations were observed in plantlets, especially in regenerated leaves. The separation of the broad leaved plantlets and albino were observed in some cultures. Growth of plantlets after transplantation was best in pots with the sterilized vermiculte. But abnormal variants withered up.
Varietal Difference in Changing Aspect of Daily Sink Filling During the Grain Filling Period in the Rice Plants
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 43~48
The experiment was conducted to know the varietal difference in changing aspect of daily filling sink during of rice using three cultivars; ‘Suweon 295’ (japonica), ‘Suwoen 264’ and ‘IR 1317-70-1’ (semi-dwarf indica) cultivated in the field and green house of the Crop Experiment Station in 1983. There was not significant varietal difference in flowering habit and duration of flowering period each panicle. Semi-dwarf indica cultivars showed shorter days to physiological maturity of rice kernel than the japonica one. The former also displayed earlier decrease in water content of rice grain during ripening than the latter. Japonica variety revealed larger difference in ripening advancement between vigorous florets and inferior one than semi-dwarf indica varieties. The semi-dwarf indica rice cultivars expressed significantly shrewder parabola of daily filling of sink per panicle during ripening than the japonica one. The time showing maximum capacity of daily filling of sink per panicle during ripening was 10-12 days after anthesis. The filling capacity of daily sink filling per panicle for 'IR 1317-70-1', 'Suweon 264' and 'Suweon 265' at this time were about 240 mg, 165 mg and 145 mg, respectively. Pattern of sink filling per panicle during ripening was slightly changed by the cultural environment. ‘Suweon 295’ showed slightly sharper parabola and 2-3 days earlier time showing maximum capcity of daily sink demand per panicle during ripening in the field than those in the green house.
Kernel Characteristics of the Modified Opaque-2 Systhetics, Zea mays, L.
Bong-Ho Chae ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 49~55
To obtain basic information required for improving grain yield of the two modified opaque-2 synthetics, which have been developed at College of Agr., Chungnam National Univ. in 1980 and named as Puyo No.2 and No.3, physical kernel characteristics of the two synthetics were fully investigated and results obtained are as follows: Puyo No.2 synthetics had a smaller kernel size with lighter weight than the Puyo No.3. The Puyo No.2 synthetics had higher kernel density than the Puyo No.3 with large Kernel size. The Puyo No.2 had kernels with heterogenous endosperm phenotypes. Some kernels had mottled patches on endosperm, while other kernels 1/2 and 1/2 phenotypes. All the modified opaque-2 synthetics had somewhat lighter endosperm weight than the normal check hybrid. The Puyo No.2 synthetics with smaller kernel size had more germ portion compared with large kernel, Puyo No.3. The Puyo No.2 had shown also typical endosperm texture when observed under microscope after cutting by glass knife. The lysine content of the Puyo No.2 was higher than those of other varieties studied. Breeding schemes to improve the yield capacity of the two modified opaue-2 synthetics were discussed.
Effect of Temperature, Soil Water Potential and Osmoconditioning on Germination and Seedling Elongation of Corn and Soybeans
Keun-Yong Park ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 56~61
Germination and seedling elongation of maize (Dekalb XL 72B), and soybeans (Williams) were measured at two temperatures (15 and 35
), three soil water potentials (-1.50, -0.5, and -0.05 MPa), and four polyethy-lene glycol 8000 (PEG) levels (0, 20, 30, and 50 percent). Twenty conditioned seeds of each cultivar were treated with 0.2% thiram and planted 2 cm deep in sterilized Mexico silt loam soil which was subsequently compacted to a bulk density of 1.20 g/㎤. Seedling moisture content, dry weight, and length were measured for each treatment combination. Osmoconditioning with PEG showed little effect at high temperature or low soil water potential conditions. Soybeans had higher seedling moisture content than corn and both crops in-creased moisture uptake as soil water potential and temperature increased. Seedling length of corn was longer than soybeans at 35
but shorter at 15
. Seedling dry weight of corn decreased at 35
and that of soybeans decreased as soil water potential increased.
Varietal Variation in Germinative Energy, Capacity and Water Sensitivity for Malting Barley
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 62~67
Forty-nine malting barley varieties were tested at 3 and 8 weeks after harvest, stored in natural glasshouse so as to investigate varietal variation of germinative energy(GE), capacity(GC) and water sensitivity(WS). The differences among GE, GC, promptness index(PI), and WS on paper at two moisture levels (4
tests) were great at 3 weeks after harvest, but small at 8 weeks after harvest. Excess water depressed the germination of dormant grains. The GE of whole varieties were excellent, but WS of only two varieties, CI 12062 and CI 15631 were bad at 8 weeks after harvest. So in the case of broad germplasm to be used for crossing materials, it is suggested that WS will be tested to screen good quality malting lines. WS was highly significantly correlated with GE, GC, and PI of 8 ml test, but was not with three factors of 4
test. GE and WS were various with storage period, varieties and grain plumpness, indicated that breeding good grain-filling varieties and improving production practice for good grain-filling would be studied in the future.
Changes in Development and Nutrient Composition of Pod after Flowering in Cowpea 〔Vigna unguiculata(L) Walp〕
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 68~73
In order to identify the physiological maturity and to determine the proper time of harvesting as fresh seed for cooking with rice and germination ability according to the harvesting time in cowpea (Vigna unguiculata (L.) Walp), this experiment was conducted. The results obtained are as follows; 1. The length and width of pods became maximum size on 10 days after flowering(DAF) and thickness of them increased to 14 DAF and then decreased to 18 DAF. 2. The weight of pod wall reached the maximum on 14 DAF, the thickness of them increased to 8 DAF and decreased to 18 DAF and it was stabilized. 3. The length and thickness of the seeds became larger to 10 DAF, were not changed from 10 DAF to 16 DAF and then decreased after 16 DAF. 4. The seeds coloured 2 days earlier than the pod wall on 8 DAF and the grade increased by degrees to 16 DAF. 5. The moisture content of seeds and pod wall started to decrease on 8 DAF and the moisture content of pod wall was higher than that of seeds in the middle stage but the condition changed after 18 DAF. 6. When the weight of seeds reached the maximum on 16 DAF, the moisture content of them was 54.5%. 7. The content of total nitrogen, phosphate and oil decreased but the carbohydrate increased by degrees along the passing of DAF. The silicic acid did not exist and K
O, CaO, MgO, protein etc. existed but did not show regular tendency. 8. The physiological maturity was 16 DAF and the proper time of harvesting as fresh seed for cooking with rice was 12 DAF to 16 DAF. 9. Germination was possible after 10 DAF but we could get the normal roots from the seeds harvested after 14 DAF.
Studies on Breeding of
Hybrid Rice Using the Korean Cytoplasmic and Genetic Male Sterile Rice II. Breeding of Genetic Male Sterile Rices Having Backgrounds of Korean Cultivars by Transferring the Male Sterility Gene of IR36ms
Hak-Soo SUH ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 74~77
The male sterility gene of IR36ms was transferred to four Korean rice cultivars Gayabyeo, Nampungbyeo Sinkwangbyeo and Suweon 296 by five times back crosses. From the BC
, the genetic male sterile rices having the backgrounds of the Krean cultivars, Gayabyeo ms, Nampungbyeo ms, Sinkwangbyeo ms and Suweon 296 ms were selected. No differences in number of panicles per hill, number of florets per panicle, heading date and length of panicle, were found between the male sterile lines and their parental cultivars in the four series of male sterile rices. The culm length of the male sterile lines was shorter than that of their parental cultivars in the four male sterile rice. Significant difference in out cross rate was found from the genetic male sterile rices having different back-grounds even though they have the same male sterility gene. The out cross rates of Gayabyeo ms, Nampungbyeo ms, Sinkwangbyeo ms and Suweon 296 ms were 11.5%, 13.1 %, 1.9% and 12.7% respectively. No difference in out cross rate was found on the genetic male sterile plants planted from I 5cm to 90cm from the pollinater.
Effects of Hulled and Hulless Barley Isogenic Lines on Germination and Emergence Rate
Eun-Sup Lee ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 78~83
To obtain the information about the reasons why hulless barley varieties generally have poor germination and emergence rate in the field, hulled and hulless isogenic lines were bred and used. The germination rates of hulless isogenic lines were 4-6 percent lower than those of hulled lines at artificial precipitation treatment, and seriously dropped down at 5 day precipitation treatment. As the thresher rotation speeds up 600 to 1,000 rpm, the differences of germination rate were 10 percent in hulled, but 22 percent in hulless lines. Also emergence rates of hulless lines became seriously low at deep seeding. The emergence rates of hulless isogenic lines became low in the order of deep seeding, high speed thresher, and rain-fall. These results suggest that barley breeders especially for hulless varieties should plan their breeding programs to improve the emergence rate or seedling vigour in the field.
Temperature and Sweet Corn Production at Different Planting Dates under Polyethylene Tunnel and Mulch
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 84~90
An experiment was conducted to know the effects of planting dates (March 5, 15, and 25 and April 4) and transparent polyethylene (P.E.) film treatments(tunnel, tunnel slit, and mulch) on air and soil temperatures and growth and yield of a sweet corn variety, Great Bell. Maximum air and soil temperatures and minimum air and soil temperatures were greater at tunnel>tunnel slit>mulch in that order. Differences in maximum air and soil temperatures among the P.E. film treatments were much greater than those in minimum air and soil temperatures. However, when film was opened due to high air temperature over 40
in the tunnel, air temperature was similar but soil temperature was lower com-pared to mulch. High temperature stress could be avoided in tunnel slit without opening film by increase in the number of slits. Cold damage of corn seedlings was avoided by tunnel and reduced by tunnel slit, and frost-damaged seedlings under the mulch were recovered in few days. The number of days from planting to silking was reduced as planting date delayed. At early plantings, tunnel enhanced early growth and silking, but it delayed at late plantings because tunnel was opened during the most of day time due to high temperature. Black streaked dwarf virus(BSDV) disease was more severe at early plantings and it was reduced in tunnel slit at late plantings because plants were grown under the film at the time of infection. The number of marketable ears was similar among all treatments except mulch at March 5 planting where BSDV was severely infected. Gross income was high in tunnel and tunnel slit at March 25 planting which had more larger marketbale ears and tunnel and tunnel slit at March 5 planting which had higher market price.
Studies on the Characteristics of Grain Development Process for Baegdong in Double Cropping Paddy
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 91~96
This study was carried out to clarify the barley grain development process under the double cropping paddy. The maximum length, width, and thickness of Baekdong were reached at 33,42, and 45 days after heading. They were not significantly reduced by 11, 7, and 5 days earlier harvesting than their above maximum develop-ing periods, respectively. Physiological maturity times were observed at about 40-46 days after heading, and the moisture contents were ranged 28-31 %. Practical maturity times were about 7 -8 days earlier than physiological ones. The beginning times of the sharp development phase of grain were delayed for two to ten days by delay of seeding times. However, the periods of the stationary and the lag development phases were about nine to ten days each and they were little changed by seeding times.
Stuides on Major Morphological Traits, Yield and Yield Components of Barley II. Variations of Growth and Developmental Patterns, and Grain Yield by Different Locations and Sowing Dates
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 97~103
In order to investigate the important morphological traits, and grain yield and its components on basis of regional variation of barley plant, Olbori was tested at 3 locations Suwon, Daejeon and Jinju for 3 years. It needed seven days around 15
of daily average temperature for seed emergence. 104 to 144 days for Daejeon and 135 to 142 for Jinju after sowing are needed for productive tillers according to the different sowing dates, and % of productive tillers were ranged on 37-77%, showing higher value at the southern region. Young spike elongated slowly at early stage, and after floret differentiation it appeared rapid development with 1.05-1.95 mm elongating per day. Analysis of variance indicated that only number of kernels/spike showed significant differences among locations, but every traits related to grain yields revealed the significant differences among different sowing dates. Little differences between locations existed on grain yield but its large variation appeared between sowing dates, especially indicating more variation at northern regions.
Analytical Studies on the Rice Yield Components and Yield in South Region of Korea III. Variation in the Rice Yield Component and Yield under the Different Planting Density
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 104~111
This study was conducted to establish the fundamental of cultivation system in southern warm region of Korea by investigation of variation of yield component and yield under the different planting density, and that was 50, 70, 90 and 110 hills per 3.3㎡. In variations of thickness of culm under the different planting densities there were more thick as decrease in density, and there were fine culm in May 20 transplanting. In Seokwang, the optimum planting density was 90 hills/3.3㎡ in May 20 and June 5 transplanting, but in June 20 and July 5, it was 110 hills/3.3㎡, then in Dongjin, the maximum grain yield was obtained on 90 hills/303㎡ in May 20, June 5, June 20 transplanting, but in July 5 transplanting the highest yield was obtained in the plot of density 110 hills/303㎡. The rate of ripened grains was higher in the high density than that of low density on the late season culture. The degeneration of primary, secondary branches and spikelets was decreased with increase in planting density, and there was more significant tendency in Seokwang than in Dongjin. The no. of panicles per m2 was increased linearly with increase in planting density, and the variation of no. of panicles per m2 according to transplanting periods was greater in Seokwang than in Dongjin.
Studies on the Breeding of Rice Cultivar Resistant to Disease, Insects and Cold Weather IV. Variations of Nymphal Survival Rate of Whitebacked Planthopper According to Seedling Ages and Tillers within a Plant in Resistant Rice Cultivars
Mun-Hue Heu ;
Korean Journal of Crop Science, volume 31, issue 1, 1986, Pages 112~119
The variations of antibiosis to whitebacked planthopper (Sogatella furcifera Horvath) in resistant varieties, N 22 (Wbph 1) and ARC 10239 (Wbph 2) was investigated at different seedling ages and different tillers within a plant. The antibiosis of the rice plants to the insect was measured as the nymphal survival rate on the rice plants. The survival rate of the WBPH on N 22 was greater than on ARC 10239. It was also different at different seedling ages and the tillers within a plant with different tendency of two resistant rice genotypes, N 22 and ARC 10239. NO significant differences of nymphal survival rate was found between 7 and 30 days old seedlings on N 22, and greatly reduced on the 60 days old seedling. On the other hand it was increased up to on 30 days old seedlings and gradually decreased from on 40 days old seedlings of ARC 10239. The nymphal survival rate was greater in tillers than in the main culm of the rice plants.