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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 29, Issue 4 - Dec 1984
Volume 29, Issue 3 - Oct 1984
Volume 29, Issue 2 - Jul 1984
Volume 29, Issue 1 - Apr 1984
Selecting the target year
Studies on the Selection Efficiency for Clear Rice in the wx - carrier technique.
Mun-Hue Heu ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 1~10
The main objective of this experiment was to investigate the selection efficiency for clear rice by the application of the wx-carrier technique in rice. Twelve semi-dwarf waxy lines were bred through backcrosses to the two recurrent semi-dwarf parents, IR667 and IR1317, utilizing six different waxy cultivars as waxy donor parent. These waxy lines were crossed to three clear non-waxy varieties, IR24, Suweon 287 and Suweon294. Their F
seeds were separated into waxy and non-waxy and the clearness of non-waxy grains were counted. The results are summarized as follows: l. Mean clearness per plant for twelve waxy lines ranged from 3.7% to 78.9% at the 35 days after heading. It was higher in the lines which utilized IR 1317 as recurrent parent and it was lower in the lines which utilized IR667 as recurrent parent. Mean clearness per plant for recurrent parent, IRl317 and IR667 were 47.6% and 5.6% respectively. The clear non-waxy parents; Suweon287, IR24 and Suweon294 showed 83.7% 80.5% and 73.5% clearness respectively. 2. Mean clearness of F
seeds of the crosses between different waxy parents and IR24, Suweon 294 and Suweon 287 ranged 16.7-73.9%, 21.9-42.9% and 10.6-26.9%, respectively. IR24 crosses showed the highest mean clearness. 3. Highly positive correlation was found between the clearness of F
seeds of Suweon 287 crosses and those of Suweon294. 4. Significant differences were observed in mean clearness of F
seeds of the crosses between the different waxy lines, which was bred through the same number of backcrosses to the same recurrent parent, and a clear non-waxy parent. Crosses of IR1317 recurrent parent showed higher mean clearness than those of IR667 recurrent parent. 5. In some crosses, clearness was higher in homo-non-waxy than in hetero-non-waxy, but, in other crosses it was higher in hetero-non-waxy. Thus no distinct pattern in the segregation of clearness was observed along the homo-non-waxy or hetero-non-waxy. 6. From the results it was concluded that, the selection efficiency for the clear rice can be improved by choosing the proper waxy parent, as well as proper recurrent parent under the wx-carrier technique.
Inheritance of Scentedness of Rice Leaf in a Scented Breeding Line 'P-33-C-19'
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 11~14
The inheritance of scent in rice leaf and its genetic association with base color, hull color and resistance to bacterial leaf blight were studied in F
population of two rice crosses, P-33-C-19 (scented)/Zhu-Lian-Ai and P-33-C-19/Kataktara DA2. The scent was identified by leaf analysis at tillering stage. The scented and non-scented plants segregated in the ratio of 1scented: 3non-scented showing that a recessive gene responsible for the expression of scentedness. The scentedness was independently segregated with base color. hull color and resistance to bacterial leaf blight.
Studies on the Viviparous Germination of Indica
Japonica Type Varieties in Paddy Rice
Rae-Kyung Park ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 15~18
This experiment was conducted to find out the factors governing the viviparous germination of In.
Ja. type rice varieties. Six varieties, i.e., Milyang 21, Raekyeong, Milyang 30, Yeongnamjosaeng, Nopoong and Mansuk, were used for this experiment. The viviparous germination easily occurred between 40 to 45 days after heading, and was easier in yellow-ripe stage or full-ripe stage than dough-ripe stage. The use of exceeding fertilization induced more viviparous germination than ordinary one. The early varieties such as Yeongnam-josaeng and Milyang 21, easily occurred the viviparous germination. The local conditions of viviparous germination were usually poorly drained soils and narrow alluvial valleys where were high humidity prevailed.
Studies on the Climatic Influence on Spikelet Formation and Yield of Lowland Rice I. Interaction of Temperature and Solar Radiation for Spikelet Formation
Su-Bong Ahn ; Jong-Chul Lee ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 19~24
Experiment was conducted to know the interaction of temperature and solar radiation for spikelet formation of rice in different location. Under the Korea climatic conditions both number of spikelets and percentage of ripened grains affected yield of rice. Percentage of ripened grains was the most significant limiting factor in Tongil type rice varieties and the lower number of spikelets in japonica type varieties. The number of spikelets increased as amounts of solar radiation increased during the reproductive stage, as daily air temperature decreased from 23 to 28
, or as climatic consumption index (CCI) value decreased. CCI calculated with critical temperature of 1
and solar radiation was more closely correlated with the number of spikelets compared to CCI calculated with sunshine hours instead of solar radiation. CCI during the 15 days before heading was more closely related with the number of spikelets compared to CCI during the 30 days before heading.
Rice Seedling Establishment for Machine Transplanting V. Effect on Endosperm Weight Change on the Seedling Growth and Regrowth After Transplanting
Yong-Dea Yun ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 25~30
Rice seedlings were raised in seedling box for rice transplanter at the temperatures of 32
in a phytotron. The endosperm materials were consumed more rapidly at the high temperature (32/1
) than at the low temperature (25/1
) and thus the leaf development was proloted at the high temperature for 15 days from the sowing. But at 35 days after sowing more leaves were developed at the low temperature than the high temperature. The short cotyledon length(5mm) before sowing was more available for the leaf development than the long cotyledon(20mm) because the endosperm materials of the former were consumed slowly. The residual of 10% endsoperm materials, when seedling age was of 2.0 to 2.1, promoted the regrowth of seedlings after machine transplanting.
Varietal Difference of Anther and Fillament Length of Rice
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 31~38
The length of anthers, filaments and glumes (Palea and lemma) of leading rice cultivars was measured before and after anthesis. A few cultivars which have long anthers and filaments after anthesis were identified. Correlation coefficients between measurements were calculated.
Effect of Gibberellic acid on Isozyme Pattern of Rice Plant
Eung-Ryong Son ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 39~45
The present researches were carried out to investigate the effects of gibberellic acid on the appearance of isozyme patterns of esterase, phosphatase, amylase and peroxidase, also to investigate if there were any differences of the isozyme patterns among root, shoot and seeds of rice plants. It was noticed that the isozyme patterns of the above tested enzymes were differ among the organs, root, shoot and seed. The GA treated plants showed difference of esterase patterns in root from Akibare and the difference in shoot and root from Yushin, phosphatase patterns in root from Akibare. However, the GA did not affect isozyme patterns of amylase or peroxidase. The seed should be the suitable organ to study isozyme patterns for genetics or variety characterization of rice plant.
Ethylene Evolution of Wheat and Barley Cultivars Differed in Plant Type and Growing Condition
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 46~49
Ethylene evolution of leaves was measured in the samples of barley and wheat grown in the various conditions and treatments. The older and stepped leaf of barley had tended to the tendency to contain more ethylene than the younger and sound leaf. Relatively high concentration of ethylene was evolved in the samples which the detecting time was delayed and so was in the samples incubated at high temperature. The higher evolution of ethylene was determined by the barley plant grown in the field and with compost application compared to the samples grown in the pot and with composite fertilizer application, however the flooding treatment resulted in decreasing ethylene evolution comparing to untreated barley and wheat. The prostrate type and higher chrolophyll content leaves of wheat appeared to produce more ethylene than erect and lower chrolophyll leaves did.
Effects of Polyethylene Film Mulching and Planting Dates on Growth and Yield of Summer Type of Soybean (Glycine max)
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 50~54
To study the effects of planting dates and mulching on the growth and yield of summer type soybean, a variety, Damamidori introduced from Japan, was planted four times from April 13 with 10 days interval. Experimental plot in each planting date was devided into two sub-plots, polyethylene film mulching and non-mulching. By mulching, days to emergence and first flowering were shortened, especially in the early plantings; e.g. as much as 11 and 12 days, respectively, in the first planting. Compared to non-mulching, plant height, number of nodes of main stem, number of branches, and dry weight of stem and branches per unit area were also much increased by mulching. As the plantings were delayed, plant height, the total number of nodes and dry weight of main stem and branches, and 100 seed weight showed increasing trends, which were mainly due to lower infection rate of soybean seeds to pod and stem blight (Diaporthe phaseolorum) in the later plantings. The higher infection rate of soybean seeds to pod and stem blight, the lower infection rate to purple seed stain (Cercospora kikuchii) was shown in mulching but not in non-mulching.
Cytoplasmic Inheritance of High Tillering and Earing Characters of a Korean Local Maize Line(MET)
Han, C.H. ; Lee, I.S. ; Choe, B.H. ; Park, K.Y. ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 55~61
A Korean local maize line, MET, which has multi-ears and tillers has been proved as a potential source for silage production. However, no fundamental genetic nature for the line has been investigated. Therefore, this study was done to find genetic information on the multi-earing and -tillering habits of MET line. MET line and a hybrid. (Mo 17
B68), with monoculm and single ear per plant were used for production of F
1-12/ and F
1-12/ and BC
1-21/ generations. From the comparison of reciprocal crosses, it was found that the tillering and earing habits of the MET line are controlled by cytoplasmic factors. The tiller and ear numbers, and barren ears were all characters associated with the MET cytoplasm. The cytoplasmic effect of MET on tiller and ear numb en was not evident in F
generation, probably because of suppressing effect of heterosis on appearance of tillers or ears. Genetic parameters for the gene action for both tiller and ear number also indicated a lack of mono- or digenic-chromosomal gene effects. The heritability (broad) was very low for both characters. Therefore, it is strongly concluded that the tillering and earing characters of MET line are due to cytoplasmic reasons.
Effects of Planting Pattern and Plant density on Seed Production of a Modified Single Cross Corn Hybrid
Keun-Yong Park ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 62~66
One row of pollen parent to two rows of seed parent (1:2), 2:4 and solid (1:2) planting patterns (PP) were compared in seed parent densities of 3,500, 5,000 and 6,500 plants per 10 ares to determine effects of PP and plant density on growths of seed and pollen plants, and seed yield of seed parent of modified single cross corn hybrid. Planting pattern did not significantly affect agronomic characteristics of seed plant except ear number per 100 plants and seed yield which were greater in solid and 1:2 PP than in 2:4 PP. Significant PP x plant density interaction did not exist for agronomic characteristics of seed parent. In the seed parent, plant height and 100 kernel weight were not affected by plant density, but ear height, ear number per 100 plants, and kernel number per ear were linearly decreased with increased plant densities. Seed yield ranged from 330 to 460 kg per 10 ares and overall yield response to plant density was quadratic. Tassel length and spikelet number per tassel of the pollen parent were significantly affected by PP and plant density. Significant PP x plant density interaction existed for tassel length and spikelet number per tassel. Tassel length and spikelet number per tassel were greater in 1:2 and 2:4 PP compared to solid PP and were greatly reduced with increased plant densities in solid and 1:2 PP. The results indicated that 1:2 or 2:4 PP at around 5,000 plants per 10 ares for seed parent would be suitable for seed production of modified single cross com hybrid.
Varietal Evalution of Resistance and Developing Conditions on Sesame Disease
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 67~71
These experiments were conducted at field and green house in order to screen the resistant sesame varieties to Phytopthora nicotianae var. parasitica. and to ascertain the infection conditions of Corynespora cassiicola at different temperatures, soil moistures and leaf stages. Most of varieties studied in this experiment were very susceptible to the Phytopthora blight. Orotall, Suweon 7, Suweon 27 and Jochiweon were resistant to the disease. PI280795 and IS103 showed a tendency to be morderately resistant. The infected areas by Corynespora leaf blight were 15% in Kwangeui and 25% in Kimpo variety at high temperature condition of 3
, respectively. The infection areas were 50% in Kwangeui and 70% in Kimpo variety at low temperature condition of 17
. These results indicate that the development of the leaf blight was highly increased at low temperature. The infection areas by the Corynespora were 55% in Kwangeui and 80% in Kimpo at wet soil moisture condition, and 10% in Kwageui and 15% in Kimpo at dry condition, respectively. The infection of the leaf blight was highly increased at 6 leaf stage and flowering date compared to at 10 and 20 leaf stages. The infection ratios were 20% at 6 leaf stage and 52.5% at flowering date, respectively.
Studies on Lodging-induced Damages of Sesame. 1. Investigating Analysis on the Productivity of Sesame am Lodging-induced Damage.
Don-Kil Lee ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 72~75
The prime cause of yield reduction of sesame is the lodging-induced damage, so a study of analyzing the products of sesame and frequency of a strong wind with the relation was implemented. The regression significance between the maximum velocity of wind during growing period of sesame and products was the highest in the Mokpo, Hampyung, Haenam, and Kohung district of coast but inland districts of Kwangju was non-significant. Estimated degrees of lodging-induced damage by a strong wind was shown as generally 31-41%, but a exceptional degree was observed as high as 80.5% at Mokpo district.
Studies on the Flowering and Maturity in Sesame 1. Flowering Habit by Different Plant Types
Jung-Il Lee ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 76~83
This experiment was performed to investigate the flowering habit of sesame (Sesamum indicum L.). Sesame varieties tested could be classified into 8 different plant types by their morphological traits such as capsule shape, capsule setting habit and branching types among sesame gene pool of Crop Experiment Station, ORD. The first flower was appeared at the lowest node on main stem. Flowers were appeared progressively toward the tip of the main stem and also toward the tips of branches. The interval of flowering for a node was about one day, but 3 to 8 days for the flowers on the tips. Side flowers started at 4 to 5 nodes lower than those of center flower at the same day. Flowers were beared 2 by 1 node on the middle part of flower setting node (7-9) in mono capsule setting habit in spite of its normal is 1 by 1 node on the other nodes. Flowers were beared opposite direction on each node of stem and flowering toward the tip of main stem composed of cross shape between nodes and spiral, reverse of clockwise direction. We called this habit as cross spiral flowering order and cross spiral phyllotaxis. The first flower on branches was appeared when center flower on the 5th node of main stem began to flower. The branches produced at higher nodes on main stem showed larger flowering periods and more number of flowers than that at lower parts. BTB (Branch, Tricapsule, Bicarpels, 4 Loculi) type showed three capsule setting habits and same flowering period both on main stem and branches while BTQ (Branch, Tricapsule, Quadricarpels, 8 Loculi) type showed three capsule setting habit on main stem and mono-capsule setting habit on branches. In BTQ type, the period of flowering was much shorter on branches than on main stem. Branching type was considered more promising than non branching type for the breeding of early maturing high yielding variety because branching type has the advantage of bearing a lot of flowers in comparatively short flowering period.
Genetic Studies in Some Agronomic Characters in Rapeseed (Brassica napus L.) 1. Genetic analysis for maturity, plant height and grain weight per plant.
Jung-Il Lee ; Young-Am Chae ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 84~88
To obtain basic information on the breeding of early maturing, short plant height rapeseed varieties, the following 7 varieties, Isuzu, Miyuki, Norin 25, Rang, Yongdang, Cresus and Tower were used in diallel crosses in 1979. Maturing date, plant height and grain weight per plant for the parents,
's of the 7 x 7 partial diallel crosses were measured in 1981 for analysis of their genetic behavior. The results obtained are summarized as follows: 1. The days to maturing of
's showed complete dominance for early maturing, and both additive and dominance genetic variances were significant. Number of effective factors in
's was 3, but in
's was 1. The degree of dominance in
's was partial, while in
's was complete. Both broad and narrow sense herita-bilities in
's was high, while in
's was low. 2. Yield per plant in
's was controlled by additive component of genetic variance only, but
's was different. The degree of dominance in
's was complete, while in
's was partial. The direction of dominance showed almost complete dominance over high yield and three effective factors was estimated. Yield per plant was controlled by recessive genes. 3. The plant height was controlled by both dominance and additive variance. Dominance was directed toward tall plant height. Number of effective factors was 2, and broad and narrow sense heritability were high in the plant height.
Studies on the Photosynthesis of Korean Ginseng 1. Seasonal Changes in Photosynthetic Ability of Youngaged Korean Ginseng (Panax ginseng C. A. Meyer)
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 89~97
This study was carried out to investigate the effect of seasonal changes on some of the morphological and physiological characteristics, including the photosynthetic abilities and dark respiration, of young ginseng plants due to planting location under shading. The results obtained are as follows: 1. Seedlings and 2-year old plants planted in the back rows appeared to have broader leaf area, and their leaf weight greatly increased in September. Chlorophyll content was significantly reduced in September rather than in June and the plants in the back rows had more chlorophyll content than those in the front rows. 2. There was no difference in the light compensation point between the front and back rows in June, while in September the light compensation point of 2-year old ginseng leaves was much lower for plants in the back rows compared with those in the front rows. A difference in the light saturation point was not noticeable between plants in the front and back rows in June and September. But the light saturation point of 2-year old ginseng leaves at
was high in June, while it was high at
high in September. 3. Maximum photosynthetic ability was attained at
in June and at
in September. During June no significant difference in photosynthetic ability was found between plants in the front and back rows, but in September the amount of photosynthesis was significantly increased at the leaves of seedlings as well as 2-year old plants planted in the back rows. 4. The optimum temperature for maximum photosynthesis in 2-year old plants ranged from
in June and from
in September. However, the optimum temperature for maximum photosynthesis in the seedlings was from
in September, but a significant difference in the optimum temperature for the maximum photosynthesis in seedlings and 2-year old plants was not noticeable between the front and back rows. 5. The respiration rate was rather high in seedlings compared with 2-year old plants. During September the respiration rate in seedlings was much lower in the back rows than in the front rows. The rate of increase in the respiration of 2-year old plants was higher at September than June. The increase in respiration rate due to temperature was more significant in seedlings than 2-year old plants. 6. In September, the level of
in 2-year old plants was much lower than that found in seedlings. During June, 2-year old plants showed lower
levels at a temperature difference between
; but in September this occurred at a temperature difference between
Effects of Sodium Hydroxide and Sulfuric Acid on the Embryo Growth of Ginseng Seed (Panax ginseng C. A. Meyer)
Lee, J.C. ; Byen, J.S. ; Park, H. ; J.T.A. Proctor ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 98~101
Endorcarp inhibited the embryo growth of ginseng seeds. This inhibition is not due to impermeability to water, but is probably caused by mechanical resistance. The embryo growth rate was enhanced by endocarp injury by soaking for 10 to 30 minutes in 2.5% solution of sodium hydroxide. But sulfuric acid did not affect on the embryo growth of ginseng seed.
In Vitro Propagation o Stevia rebaudiana Bertoni
Chang Yeon, Yu ; Young Am, Chae ;
Korean Journal of Crop Science, volume 29, issue 1, 1984, Pages 102~107
This study was undertaken to know the possibility of in vitro propagation of Stevia through axillary bud culture and the results indicated that: (1) Addition of NAA (0.01-0.05 mg/l) alone on Murashige-Skoog basal medium promoted shoot differentiation and growth rate. And also additional of kinetin of 0.5-1.0 mg/1 alone showed the same trend as that of NAA: (2) Addition of both NAA (0.01-0.05 mg/l) and kinetin (0.5-1.0mg/l) to MS medium promoted better shoot formation. (3) Shoot differentiation and growth were better on the full salt strength of MS medium (1X MS) than that of half strength (
MS), while their effects were reversed for root differentiation