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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 24, Issue 4 - Dec 1979
Volume 24, Issue 3 - Oct 1979
Volume 24, Issue 2 - Jul 1979
Volume 24, Issue 1 - May 1979
Selecting the target year
U.S. Soybean Collections Derived from Korea
Keun-Yong Park ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 1~7
5, 496 soybean collections derived from Korea during the period of 1901 to 1976 were investigated. Plant inventory numbers, of collections, locations, contributors, preservations, maturity groups and including major commercial varieties originated from Korea were summarized.
Trait Association with Earliness and Winter Hardiness Within a Collection Korean Land Race Barleys
Mcproud, W.L. ; Bae, Seong-Ho ; Lee, Eun-Sup ; Chung, Tae-Young ; Min, Kyung-Soo ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 9~16
528 Korean land races of barley were examined for IS agronomic traits to determine if any preferential trait associations with early heading and winter hardiness existed in this collection. Eight traits were non-randomly associated with the 1977～'78 cold damage levels, and seven traits were non-randomly associated with heading date. No early heading, least-cold-damaged land race lines were found. However the least-cold-damaged class preferentially associated with mid-early heading land race lines. Ten traits were preferentially associated with the mid-early heading, least-cold-damaged class. The utilization of these associations should increase the probability that genes for winter hardiness will be preserved in the mid-early heading selections from this collection.
Studies on the Chilling Injury of Rice Seedlings II. Maximum Tolerance of the Recent Varieties from Indica
Japonica Cross to Chilling Stress at the 3rd Leaf-stage
Yong-Woong Kwon ; Moon-Hee Lee ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 17~26
Comparative tolerance of the new rice varieties from Indicax Japonica cross to elastic and plastic chilling injuries was examined at the 3rd leaf-stage, the most sensitive stage to chilling during nursery, using a chilling chamber set 11\circ C, 13hrs. 20K lux day/5
night. Seedlings were reared until 35 days after seeding in a 26\circ C, 13hrs. day / 18\circ C night chamber except the period of chilling treatment for 0, 3, 4, 6, 8 or 10 days. The new varieties were approximately twice susceptible to elastic injuries, and thrice susceptible to plastic injuries than the Japonica varieties in the term of chilling duration. Among the variables indicating apparant chilling injuries the reduction in dry matter responded most sensitively and differentiated well the varietal difference in chilling resistance even with shorter chilling period. Sequential aspects of the cause and effect relations involved in the development of the apparant chilling injuries are discussed and a schematic diagram is presented as Fig. 5 in the text.
Studies on the Selection of Mutation in Rice Treated with Ethyl Methanesulfonate
Shin-Han Kwon ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 27~34
Dormant rice seeds were treated with different levels of ethyl methanesulfonate(EMS) and sown directely on the well managed seed beds and the ontogenetically different tillers of
plants were marked as they are developed. The biological effects of
plant and mutation frequency of
were investigated. utation frequency evaluated with tiller groups and
sterility, differs from the results reported with radiation treatment. Hence, selection of
panicle of primary or secondary tillers could be recommended for increase mutation frequency in
Effects of Temperature and Daylength on Growth and Grain Yield in Wheat (T. aestivum)
Chang-Hwan Cho ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 35~41
To observe the effects of temperature and photoperiod on the growth and yield of winter wheat (Triticum aestivum, L) eight varieties including Chang Kwang were tested at various treatments like longday-high temperature (24hrs-20\circ), shortdayhigh temperature (12hrs-20\circ), longday-low temperature (24hrs-14\circ) and shortday-low temperature (12hrs-14\circ). Among the traits measured, days to heading, plant height, spike length, number of spikes per hill and grain yield per hill were generally decreased at high temperature and long day treatment and increased at low temperature and shortday condition. Number of grains per spike was decreased at low temperature and short day condition while increased at longday and high temperature conditions. Grain weight was decreased significantly at high temperature and shortday while increased at low temperature and longday treatment.
Effect of Varietal Mixtures on Growth and Yield of Barley
Chang-Hwan Cho ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 43~50
In order to determine the effect of mixtures of different barley genotypes, four barley varieties that were similar to the variety Kangbori for earliness, culm length, spike type and spike color were tested. The variety Kangbori was mixed with the 4 other barleys in ratios ranging from 20% to 80% of Kangbori. Tests were conducted at Suweon and Iri. It was difficult to distinguish differences in heading date, maturing date and culm length in the various mixtures. In the mixed populations the degree of lodging was decreased due to the superior straw strength of Kangbori. The mixtures of 20% Kangbori and 80% Bunong and 20% Kangbori and 80% Milyang #6 gave the highest yield increase among the combinations.
Effects of Vernalization and Preceding Dark Treatment on Floral Induction of Naked Barley
Yoong-Nam Song ; E-Hun Kim ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 51~55
The effects of vernalization and darkness on flower initiation were reviewed by using naked barley varieties. The dark effects were pronounced on flower induction even at
. There were no differences in flowering responses among varieties. The effects of vernalization and darkness combined with
were 100% and 60% respectively which showed a significant difference. When the alternation of darkness with light was taken as first and last the flowering rate was 92 percent. When it was intercalated by light treatments the flowering rate was 91 per cent. Thus the effects of vernalization and darkness seems to differ.
Effects of Number of Seedling per Hill and Plant Density on Rice Yield Components and Yield in the Late Season Culture of Rice
In-Bea Kim ; Joo-Yeol Lee ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 57~63
This study has been carried out to find out the optimum plant density and number of seedling per hill in the late season culture of rice at Chung Buk. P.O.R.D. Up to the level of 33 hills per m2 and 6 number of seedling per hill, rice yield was increased as the number of seedling per hill and plant density per unit areas increased. However it is recommendable to have a plant density of 28~33 hills per m
with 4~6 number of seedling per hill for the late season culture.
Studies on the Effect of Different of Climatic Environment During Nursery Period on Rice Growth and Yield
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 65~73
Experiment was conducted to study the optimum sowing date and nursery duration at Jean An from 1976 to 1978 and their influence on the growth, dry matter production during growth period of the rice plant. In case of Tongil lines, the lengthening of nursery duration and late sowing increased unexpected heading and prolonged heading and maturing period. High yield were obtained by increasing dry matter accumulation during growth period of rice plant. To obtain safe yield in Tongil lines transplanting must be done before May 30th.
Studies on the Root Nodule Formation of Several Leading Soybean Varieties
Chang-Yeol Choi ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 75~81
15 soybean cultivars were tested with the sandculture to investigate the affinity of cultivars to the nodule bacteria, Rhyzobium Japonicum #23, and the effects of inoculation on the vegetative growth of cultivars. The amount of nodule formation until the flowering stage was significantly different among the cultivars. The cultivar Haman showed the best nodule formation of 122.2 nodules per plant, while the cultivar Busuk showed the least amount of nodule formation. The inoculation of the nodule bacteria resulted in an increased plant growth and especially the chlorophyll content was significantly improved by inoculation of the nodule bacteria.
Competitive Effects of Annual Weeds on Soybeans III. Effect of Plant Spacing and Soybean Cultivars on Competitive Relationships between Soybeans and Weeds
Jae-Chul Kang ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 83~88
Competitive relationships between soybean cultivars and weeds were determined at different plant spacings and weed competition times. Soybean yields did not differ significantly between plant spacings. Annual weed competition more signficantly reduced yields and yield components of 'Williams' soybeans than those of 'Dongbuktae' and 'Suweon 83'. 'Suweon 83' and 'Dongbuktae' were more competitive to weeds than 'Williams'.
Qualitative Development of Herbicide Use in Crop Production -On the Compatibility of Herbicide Use in Soybean Production
Ja-Ok Guh ;
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 89~103
The compatibility of herbicide use for soybean cultivation was evaluated from the field and pot trials. Comparing with the check plot, the effects of herbicides at their several doses on the phytotoxic stability of crop plants and on the weeding efficacy were studied. Statistically significant differences were found among the doses, and not among herbicides and interactions between herbicide and dose. Risks on the compatibility for crop plant and weeding efficacy were recognized from the excess-dosed treatments of herbicides tried.
Studies on the Relationship of the Cold Resistance Rating with Growth in the Nursery Stage in Rape
Korean Journal of Crop Science, volume 24, issue 2, 1979, Pages 105~108
Compared with ordinary varieties, the cold resistant lines were heavy in fresh weight of seedling, low in stalk elongation. Their leaf-types were complete runner types, and they were high in wintering rate, and were abundant in the branch number and in pod numbers per branch. They were high in the seed yield.