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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 22, Issue 2 - Dec 1977
Volume 22, Issue 1 - Jun 1977
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Studies on the Improvement of Grain and Eating Quality of Barley 1. Varietal Difference of Protein Content and its Variation
Hong-Suk Lee ; Young Ho Lee ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 1~6
The varietal differences of protein content in barley grain and its variation under different cultural conditions were studied. The varietal variation of protein content was significant with the range of 8～18%. The protein content of barley grain were increased by heavier nitrogen application and decreased by shading treatment and drill seeding. There was negative correlation between protein content and grain weight in hulled barley, while positive correlation between nitrogen content of plant and leaf at heading stage and protein content of barley grain was significant in Haganemugi and Buheung.
Studies on the Chemical Contents for Soybean Breeding I. Phenotypic and Genotypic Correlations between Various Chemical Contents
Kwon-Yawl Chang ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 7~10
Positive correlations were observed between protein content and
, protein and ash, protein and moisture content, and
and ash in soybean seeds. On the contrary, negative correlations were observed between fat and CaO, fat and ash,
and moisture content, CaO and moisture content, and MgO and ash content in soybean seeds.
Studies on Purple Seed Stain (Cercospora kikuchii) of Native Soybean Collections
Shin-Han Kwon ; Hi-Sup Song ; Jeong-Hae Oh ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 11~15
Natural infection of purple stain seemed to be higher in early maturing lines comparing to late maturing group. It was positively correlated with length of the period from flowering to maturity and significantly associated with weather conditions during the maturing period.
Effects of Opaque-2 Corn on the Body Weight of Rats
Bong-Ho Chae ; Keun-Yong Park ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 16~19
Feeding test was conducted to determine the values of opaque-2 corn selected from opaque-2 conversion program at the Crop Experiment Station, Suwon. At the end of 24 days of experiment, the average gain of body weight of white rats fed on opaque-2 corn was 40.2 grams, that of the rats on normal corn, 31.4 grams, 1.3 fold difference. The growth rate of rats expressed by regression coefficients indicated that the effects of opaque-2 corn was greater than that of normal corn.
Effects of Sprout Length, Amounts and Times of Nitrogen Application, Transplanting Rate and Depth of Wheat Straw Mulch on the Fall Crop Production of Potato
Jung-Hyun Choi ; Jae-Young Cho ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 20~25
In order to find out the effect of five kinds of cultural treatments in fall crop production of potatoes the experiments were carried out with Simabara cultivar at Chonan in 1976. Sprouting of dormant seed pieces were induced by soaking in 2ppm GA and 250ppm Ethrel mixed solution for 60 minutes. Seed pieces with longer sprouts at transplanting, and increasing of urea(nitrogen) application from 10 to 30 Kg per 10a resulted better growth, yields, and quality. Application of total nitrogen at one time on 24th July(transplanting date) resulted lower emergence, yields, growth, and quality as compared with divided application on 24th July and 15th August and 5th September. Higher transplanting than 60
20cm or 70
17cm resulted slender growth and lower yields. Deeper mulch with wheat straw (from 4 to 12cm) induced lower maximal earth temperature in summer and higher minimal earth temperature in autumn.
Studies on the Cold Resistant in Rape, Brassica napus L.
;Jung-Il Lee;Ik-Sang Yu;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 26~34
27 lines were selected for the cold resistant lines from the promising lines. The cold resistant lines were chiefly selected from Oro
Norin 16, Oro
Norin 20 and (Yudal
Yudal combination. The varieties of lately maturing showed cold resistantce. Transplanting treatment increased cold resistantce, and early sowing and drill planting also elevated cold resistance in the direct sowing culture. Plants to be cultured on soils with optimum moisture coutent showed higher cold resistance.
Studies on the Influence of the Date of Sowing in Autumn and Transplanting in Spring for the Seed Yield and the Characters of Seed Yield
Jung-Il Lee ; ; Hyun-Ok Choi ; Ik-Sang Yu ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 35~40
The seed yield was the highest at the sowing of the 20th of September at Mokpo, and of the 30th .of September at Chungnam. And the correlation, also, was positively relative between them rape such as the 1st number of total branches and of podes per ear, the seed content .and seed yield. In accordance with the test it seemed that the suitable period of the Autumn sowing and Spring transplanting of rape was the 20th of September in Mokpo, and the 30th of September in Chungnam.
Haploid Plant Characteristics and Screening for T.M.V. Resistance from in Vitro Anther Culture of Nicotiana tabacum L.
Ahn, D.M. ; Lee, S.C. ; Yoon, I.B. ; Heu, I. ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 41~44
Production of haploids in vitro anther culture of Nicotiana tabacum L. was oriented in a large number on a chemically defined culture medium. The haploids were screened for T.M.V. resistance and the segregating ratio in F
were in good agreement with the expected ratio.
Preliminary Studies on Breaking of Dormancy and Germination of Panax ginseng Seeds
Son, Eung-Ryong ; Reuther, G. ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 45~51
The studies were carried to know the effects of GA
, Ethrel and
on dormancy and germination in ginseng seeds. GA
stimulated the embryo growth and increased dehiscent (Kaekapp) ratio of the seeds for more than Ethrel and
not only increased germination ratio but also shortened the period of germination. Ethrel and
showed no effects on the germination and there were no significant differences among the treatment levels of GA
. The slow germination of ginseng seeds seemed to be mainly due to the dormancy of endosperm or seed coat rather than of embryo.
Studies on Competition between Major Annual Weeds and Rice in Transplanted Paddy Field
Soon-Chul Kim ; Sang-Yull Jae ; Rae-Kyung Park ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 52~60
The affect of annual weeds to rice yield with morphological characteristics was evaluated. Rice heading date was shortened 1～5 days and rice culm length was shortened 5～10cm in heavy weed growing condition. No. of grains per panicle and no. of panicle per hill were the major yield components in yield reduction.
Studies on Competition between Major Perennial Weeds and Rice in Transplanted Paddy Field
Soon-Chul Kim ; Sang-Yull Jae ; Rae-Kyung Park ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 61~69
The affect of perennial weeds to rice yield and rice growing was evaluated. Rice heading date was shortened 1-4days and rice culm length was shortened 5-10cm in heavy weed growing condition. The ratio of yield reduction were about 50% in Cyperus serotinus, about 57 in Potamogeton distinctus in both rice varieties and about 60% of Eleocharis kuroguwal in heavy perennial growing condition.
Ecological Aspect of Perennial Weeds which were Grown in Transplanted Paddy Field -The Effects of Day Length on Tuber Formation and Tuber Cutting and Soil Depth Covered on New Shoot Development of Perennial Weeds-
Soon-Chul Kim ; Sang-Yull Jae ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 70~79
Perennial weeds which were grown in transplanted paddy field formed their tubers under shortday condition. Under short day treatment, the induction periods for tuber formation were different depending upon the weed species. 80% cut tubers of the weeds did not loose their developing ability perfectly. Emergence also affected by soil conditions and depths covered.
Linear Discriminant Analysis in Agricultural Experiment
Young-Am Chae ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 80~82
Using head length and head width of two wheat monosomic lines linear discriminant function of these two variables was calculated and also illustrated how one can effectively classify unknown individuals into a correct group belonging by means of this linear discriminant function in reverse. Brief suggestion on the utilization of this analysis in genetics and breeding program was given.
The Effects of gl, gh and wx Gene on the Grain Yield and Yield Components of Rice Plant
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 83~109
Isogenic lines for glabrous leaf (gl), hull color(gh) and glutinous endosperm (wx) were used to clarify the effects of the gl, gh and wx gene on the grain yield and yield components in rice plant. Eight genotypes: glgl ghgh wxwx, glgl ghgh WxWx, glgl GH-wxwx, glgl GH-WxWx, GL-ghgh wxwx, GL-ghgh WxWx, GL-GH-wxwx and GL-GH-WxWx were evalutated in the backcrossed
generation. Significant effects were measured for gl genotypes on heading date, gh genotypes on grain fertility, and wxwx genotypes on number of panicles per hill and 1, 000 grain weight. The grain yield of straw hull and non glutinous lines were higher than gold hull and glutinous lines. The interaction of three genes, gl, gh and wx was significant for heading date, but not significant in other characters. The average value of isogenic lines which were combined with two recessive genes and one dominant gene were lower and the C.V. value was higher than the isogenic lines which were combined with two dominant genes and one recessive gene in all characters except plant height and number of grains per plant. The average value of isogenic line combined with three recessive genes was lower and the C.V. was higher than the isogenic line combined three dominant genes in all characters measured.
The Effect of Phosphorus, Potassium and Calcium Application on Root Activity and Grain Yield of Paddy Rice on Different Soil Conditions
Si-Yung Ahn ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 110~134
Effects of phosphorus, potassium and calcium applications on root activity and agronomic characters of paddy rice were studied in submerged paddy soil on which starch was applied to accelerate soil reduction and production of toxic substance during 1971～1973. Root activity at heading date was decreased in reduction accelerated soil by starch application. Effect of calcium application on root activity was differed along soil conditions, phosphorus or potassium levels. Single effects of phosphorus or potassium application were not significant on every observed characters. Calcium application when phosphorus or potassium was not used as basal but used as top dressing increased yield and yield components, especially filled grain ratio. Effect of calcium application along soil conditions was differed on agronomic characters, but calcium application with phosphorus or potassium was more effective to increase yield components and grain yield. Sufficient application of phosphorus, potassium and calcium could improve the nutritional situation of rice plant for panicle development and grain maturity in reduction accelerated paddy soil in which poor growing of rice plant after panicle formation is anticipated by the production of toxic substance from soil.
Studies on the Biochemical Features of Soybean Seeds for Higher Protein Variety -With Emphasis on Accumulation during Maturation and Electrophoretic Patterns of Proteins-
Jong-Suk Lee ;
Korean Journal of Crop Science, volume 22, issue 1, 1977, Pages 135~166
Some biochemical features of varietal variation in seed protein and their implications for soybean breeding for high protein were pursued employing 86 soybean varieties of Korea, Japan, and the U.S.A. origins. Also, studied comparatively was the temporal pattern of protein components accumulation during seed development characteristic to the high protein variety. Seed protein content of the 86 soybean varieties varied 34.4 to 50.6%. Non-existence of variety having high content of both protein and oil, or high protein content with average oil content as well as high negative correlation between the content of protein and oil (r=-0.73
) indicate strongly a great difficulty to breed high protein variety while conserving oil content. The total content of essential amino acids varied 32.82 to 36.63% and the total content of sulfur-containing amino acids varied 2.09 to 2.73% as tested for 12 varieties differing protein content from 40.0 to 50.6%. The content of methionine was positively correlated with the content of glutamic acid, which was the major amino acid (18.5%) in seed protein of soybean. In particular, the varieties Bongeui and Saikai ＃20 had high protein content as well as high content of sulfur-containing amino acids. The content of lysine was negatively correlated with that of isoleucine, but positively correlated with protein content. The content of alanine, valine or leucine was correlated positively with oil content. The seed protein of soybean was built with 12 to 16 components depending on variety as revealed on disc acrylamide gel electrophoresis. The 86 varieties were classified into 11 groups of characteristic electrophoretic pattern. The protein component of Rm=0.14(b) showed the greatest varietal variation among the components in their relative contents, and negative correlation with the content of the other components, while the protein component of Rm=0.06(a) had a significant, positive correlation with protein content. There was sequential phases of rapid decrease, slow increase and stay in the protein content during seed development. Shorter period and lower rate of decrease followed by longer period and higher rate of increase in protein content during seed development was of characteristic to high protein variety together with earlier and continuous development at higher rate of the protein component a. Considering the extremely low methionine content of the protein component a, breeding for high protein content may result in lower quality of soybean protein.n.