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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Crop Science
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
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Volume & Issues
Volume 53, Issue spc - Dec 2008
Volume 53, Issue 4 - Dec 2008
Volume 53, Issue 3 - Sep 2008
Volume 53, Issue 2 - Jun 2008
Volume 53, Issue 1 - Mar 2008
Selecting the target year
Effect of Light Quality on Shape and Greening of Selling Mungbean Sprouts
Hong, Dong-Oh ; Jeon, Seung-Ho ; Kang, Jin-Ho ; Ryu, Yeong-Seop ; Lee, Ya-Seong ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 119~124
Storage conditions of selling mungbean sprouts should affect their marketability. The study was done to examine the effect of light quality (blue, green, yellow, red, far-red) on greening period, shape, fresh and dry weights of mungbean (cv. Zhong Lu 1) sprouts for 5 days to get some information on designing their various polyethylene envelops with different colors. Periods taking to green were 2 to 3.5 days in blue, red and far-red lights but longer than 6 days in green and yellow lights. Yellow lights had the longest total length adding hypocotyl and root, and blue light did the widest hypocotyl diameter while all light treatments showed similar lateral roots for the period. Total fresh and dry weights were the highest in red light but the least in far-red light. Their lengths and weights in green and yellow lights showing the longest periods for their greening declined with increased storage periods but showed no difference between them, meaning that the envelops should be designed mainly by green and yellow colors.
Characteristics and Possible Early Harvesting Time of Early Maturing Soybean Cultivars in Southern Korea
Kim, Dong-Kwan ; Son, Dong-Mo ; Chon, Sang-Uk ; Lee, Kyung-Dong ; Kim, Kyong-Ho ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 125~130
This study analyzed the growth, seed quality, and yield of major early-maturing soybean cultivars by comparing them in order to utilize the research results in the selection of early-maturing soybean cultivars in multi-cropping farms in the Southern area. This field trial was conducted at Naju region (latitude
), Jeonnam, with planting on June 15. The maturing date for Keunol-kong and Hwaseong-put-kong was found to be around September 12, which was earlier than other cultivars. Thus, there were advantages to introducing a cropping system as well as having good seed quality and high yield. On the other hand, the maturing date for Saeol-kong and Sinrok-kong was found to be around September 20, which was a little bit late; however, the seed quality of the cultivars was good and they had a high yield. Therefore, if we want to sow the following crops of soybeans around mid-September, Keunol-kong and Hwaseong-put-kong are advantageous, while for the seeding around late September, Saeol-kong and Sinrok-kong would be good. This study was also performed to identify the limitation time for early harvesting by reviewing seed quality and yield of major early-maturing soybean cultivars according to early harvesting. When harvesting Keunol-kong on September 6, which was six days earlier than the optimal harvesting time (September 12), there was no difference in seed weight, yield, or seed quality than those of the harvested at the optimum maturing time. As for Saeol-kong, when harvesting on September 18, which was six days earlier than the optimal harvesting time (September 24), there was no difference in seed weight, yield, or seed quality than those of the harvested at the optimum maturing time. Therefore, the stable limitation time for early harvesting of Keunol-kong and Saeol-kong was concluded to be six days earlier than the optimal harvesting time.
Comparison and Evaluation on the Chemical Constituents of Progeny in T-DNA Inserted Rice
Qin, Yang ; Kim, Suk-Man ; An, Gyn-Heung ; Sohn, Jae-Keun ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 131~136
With the development of diverse agricultures worldwide, biofortified rice noted for its preferable marketability and palatability plays an important role in the world's agricultural economics and rice breeding programs. In this report, several
of T-DNA inserted lines derived from the donor cultivars, 'Hwayong' and 'Dongjin', were selected for high or low protein, high lipid and low amylose content, respectively. The coefficients and ranges of variation for the chemical constituents between
T-DNA inserted lines were evaluated in comparison with those of the donor varieties. Results indicated that T-DNA insertion might be an effective way to generate useful variations for chemical composition of rice grains which could be used for the development of biofortified rice cultivars.
Genotypic Variation of Rapid Canopy Closure and Its Relationship with Yield of Rice
Fu, Jin-Dong ; Lee, Byun-Woo ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 137~143
Rapid canopy closure (RCC) is one of the physiological attributes that may enhance genetic yield potential of rice (Oryza sativa L.) in a growing season. Crop growth before canopy closure could be described by an exponential equation of
is the crop leaf area index (LAI) or shoot dry weight (DW), t is the thermal time,
is the LAI or DW at the beginning of the exponential growth and is the relative growth rate of LAI (
) or DW(
). Field experiment using 22 cultivars revealed that the exponential growth phase before canopy closure can be divided into two sections; an earlier section during which crop dry weight and LAI of varieties are highly dependent on
and a second section where crop dry weight and LAI are highly dependent on
. Grain weight had significantly positive correlation with
parameter and dry weight and LAI during early exponential phase. The parameter
of the exponential growth curve had positive and significant correlation with the LAI and dry weight during the late exponential growth phase, grain number per unit area, and grain yield. There was genotypic difference for RCC parameters,
, indicating the possibility of genetic improvement for these traits.
Changes in Forage Quality of Plant Parts with Harvesting Time in Five Winter Cereal Crops
Kwon, Young-Up ; Baek, Seong-Bum ; Heo, Hwa-Young ; Park, Hyoung-Ho ; Kim, Jung-Gon ; Lee, Jae-Eun ; Lee, Chung-Keun ; Shin, Jin-Chul ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 144~149
This study aims to understand the growth and changes of nutritional composition in five winter forage crops including barley, wheat, oat, rye and triticale. In Korea, the winter-season cultivation of the crops could enhance land use efficiency and improve the global competitiveness of domestic livestock industry by providing high quality forage. Total content of crude protein in plants decreased after heading. Leaves and spikes had high crude protein while stem showed the lowest with less than 7%. Contents of Acid Detergent Fiber (ADF) in plants decreased with time after heading. Stem showed much greater content of ADF than leaves and spikes. There was linear relationship between ADF contents and ratios of stem weight and total weight. Contents of Neutral Detergent Fiber (NDF) also decreased with time after heading. Stem contained much higher NDF than leaves and spikes. There was a linear relationship between NDF contents and ratios of stem weight and total weight. Relative Feed Value (RFV) increased with maturing of spikes after heading in barley, wheat, oat and triticale. There was a negative relationship between Relative feed value and ratios of stem weight and total weight.
Production of Haploids from Proton Ion and Gamma-Ray Irradiation Treated
Generation of Isolated Microspores in Brassica napus L. ssp. oleifera
Kim, Kwang-Soo ; Li, Mei-Yang ; Jang, Young-Seok ; Park, Yoon-Jung ; Bang, Jin-Ki ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 150~155
This experiment was carried out to investigate the effect of proton ion and gamma-ray irradiation on microspore culture of the flower buds of
generation in winter type of Brassica napus L. ssp. oleifera. The seeds of three rape varieties, 'Halla', 'Naehan' and 'Tammi' were pretreated with proton ion and gamma-ray 400 Gy and 600 Gy, respectively. When microspore culture techniques were used, embryogenesis was increased in some varieties by proton ion and gamma-ray irradiation treated flower buds of
generation than control. In genotypes 'Naehan' showed the highest embryo production frequency, but 'Tammi' showed lowest embryo production frequency. Some of the embryoids developed directly into plantlets, whereas others developed abnormally multilobe. Plants were regenerated and successfully acclimatized in pots.
The Varietal Comparison in Growth Characteristic and Yield of Vegetable Soybean
Lee, Seung-Su ; Kim, Chang-Ho ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 156~160
This study was conducted to find on the screening of a optimal variety after compare with characteristics of a colored soybean recommended and a vegetable soybean by pure line isolation from the indigenous variety in Chungnam area. The budding period in results compared with a budding property of testing varieties between the recommended colored soybean 6 varieties and the indigenous 3 varieties, was showed that it was delayed by increasing of a grain weight but the budding rate was not significant. And the harvest period was the most early day at the black colored soybean plot at the 30th July and was the latest day at the native variety (Nonsan jaerae) at the 21 th October. The stem length was showed a wide range from 25 to 104 cm, and the Asan jaerae in this result was the highest on 104 cm, but the Geomjeongolkong was the lowest on 25 cm. The number of pod per plant was searched about 9 to 111 range, and the most numerous plot in this experimental varieties was the Ilpumgeomjeongkong as 111 number, on the other hand, the least variety was the Asan jaerae as 9 number. The rate of more than 2 seed per pod in the vegetable soybean property was the highest at the Geomjeongolkong about 82%. Additionally, the Hwangkuemkong and Geomjeongkong 1 was relatively the high levels as 78% and 73%, respectively. At the pod yield per
(10a) was the most much as 1,567 kg at the Ilpumgeomjeongkong. Also, the Sunheukkong and the Galmikong was 1,468 kg, 1,397 kg, respectively. Therefore, the Ilpumgeomjeongkong, Sunheukkong, and Galmikong were proper varieties for the vegetable cultivation.
Simulation for Irrigation Management of Corn in South Texas
Ko, Jong-Han ; Piccinni, Giovanni ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 161~170
Interest is growing in applying simulation models for the South Texas conditions, to better assess crop water use and production with different crop management practices. The Environmental Policy Integrated Climate (EPIC) model was used to evaluate its application as a decision support tool for irrigation management of com (Zea mays L.) in South Texas of the U.S. We measured actual crop evapotranspiration (ETc) using a weighing lysimeter, soil moisture using a neutron probe, and grain yield by field sampling. The model was then validated using the measured data. Simulated ETc using the Hargreaves-Samani equation was in agreement with the lysimeter measured ETc. Simulated soil moisture generally matched with the measured soil moisture. The EPIC model simulated the variability in grain yield with different irrigation regimes with
value of 0.69 and root mean square error of
. Simulation results with farm data demonstrate that EPIC can be used as a decision support tool for com under irrigated conditions in South Texas. EPIC appears to be effective in making long term and pre-season decisions for irrigation management of crops, while reference ET and phenologically based crop coefficients can be used for inseason irrigation management.
Determination and Isolation of Antioxidative Serotonin Derivatives, N-(p-Coumaroyl)serotonin and N-feruoylserotonin from Safflower Seeds
Lee, Kang-Soo ; Kim, Yun-Hee ; Chung, Nam-Jin ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 171~178
In the methanol extract from safflower seeds, two kinds of antioxidant were detected by preparative HPLC [
)]. Two unknown compounds were defined as CA and CB which had peaks at 22.1 min and 24.5 min, respectively. Antioxidant activity was measured by their scavenging ability on the stable tree radical of 1,1-diphenly-2-picrylhydrazyl (DPPH). For bulk extraction of antioxidants, the methanol extract was fractionated with hexan, chloroform, ethyl acetate and butanol. The ethyl acetate traction showing the highest DPPH radical scavenging activity was further purified by silica gel column chromatography to CA and CB. By NMR analysis, CA and CB were identified as N-(p-Coumaroyl)serotonin and N-feruoylserotonin, respectively. The content of N-(p-Coumaroyl)serotonin and N-feruoylserotonin were analyzed by reverse phase HPLC using a
) with linear gradient elution from 10% acetonitrile to 50% acetonitrile for 30min on UV detector at 300 nm. The contents of N-(p-Coumaroyl)serotonin and N-feruoylserotonin were 4.11 mg/g DW and 7.29 mg/g DW, respectively, and these two DPPH radical scavengers were detected only in the hull of seeds.
Effects of Low-Temperature Storage of Brown Rice on Rice and Cooked Rice Quality
Choi, Yoon-Hee ; Kim, Sun-Lim ; Jeong, Eung-Gi ; Song, Jin ; Kim, Jung-Tae ; Kim, Jae-Hyun ; Lee, Choon-Gi ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 179~186
This study was carried out to investigate the changes of brown rice, and cooking properties after milling of brown rice according to storage temperature and varieties. Brown rices were stored at
for 10 weeks. Tz values of brown rice stored at
were higher in Hwaseongbyeo, Koshihikari, Hitomebore, than the other varieties. The increasing rate of hardness of cooked rice in Odaebyeo, Junghwabyeo, Sangmibyeo stored at
were lower than those of other varieties. In stored brown rice at
, correlations between pH of brown rice and fat acidity, hardness, b value of cooked milled rice and head rice rate of milled rice were significant
, 0.250, respectively. At
, correlations between L value and b value of cooked milled rice, head rice rate of milled rice were significant
, and those between fat acidity of brown rice and consistency of milled rice were
. In brown rice stored at
, It was higher quality of milled rice and cooked rice than those at
that increased head rice rates of milled rice and glossy value of cooked milled rice but lower color b value and hardness of cooked rice.
Effect of Polyphenol Oxidase Activity on Discoloration of Noodle Dough Sheet Prepared from Korean Wheats
Kang, Chon-Sik ; Cheong, Young-Keun ; Kim, Sun-Lim ; Kim, Dae-Ki ; Kim, Jung-Gon ; Park, Chul-Soo ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 187~195
Polyphenol oxidase (PPO) is implicated in discoloration of white salted noodles and other wheat based foods. PPO activity was evaluated to determine the effect on discoloration of noodle dough sheets prepared from 25 Korean wheat flours during storage and to screen experimental lines with low PPO activity in 52 Korean wheats. PPO activity was assayed with whole-seed and performed with L-dihydroxyphenylalanine (L-DOPA) as substrates. Absorbance by L-DOPA assay of 25 Korean wheats was from 0.285 to 1.368 at 475 nm. PPO activity was significantly related with grain characteristics, including 1000-kernel weight and grain colors. In flour characteristics, PPO activity positively correlated with ash and protein content (r = 0.658, P < 0.001 and r = 0.424, P < 0.05, respectively) and negatively correlated with
value of flour (r = 0.412, P < 0.05). In the changes of color of noodle dough sheet,
values consistently decreased and
value increased during storage. PPO activity negatively correlated with
value of noodle dough sheet during storage (r = 0.566, P < 0.01 at 2 hr, r = 0.547, P < 0.01 at 24 hr, and r = 0.509, P < 0.01 at 48 hr). But, no significant relationship was found in between PPO activity,
values during storage. The 52 Korean wheat lines examined in this study were divided into 3 different groups, low (< 0.500), medium (0.501-0.999) and high level (> 1.000), on the basis of the level of PPO activity. Twenty two Korean wheat lines showed low level of PPO activity and Suwon 252, 277 and 280 showed lower PPO activity (< 0.200) than others.
Growth and Yield of Sedum sarmentosum as Affected by Planting Density in Cultivation System Using a Rice Nursery Tray
Kim, Hyo-Jin ; Lee, Seung-Yeob ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 196~202
To establish a cultivation system of Sedum sarmentosum using a rice nursery tray (
) in non-heating plastic film house, cuttings of two local strains (Wanju and Keumsan) were prepared and planted at different planting densities (40, 60 and 80 cuttings per tray) on September 7th, and subsequent growth and yield at pre- and post-winter season were investigated. When pre-wintering growth were measured at 60 days after planting, high planting density (80 cuttings/tray) decreased leaf length and lateral shoot number per plant compared to 40 cuttings/tray. When post-wintering growth were measured on April 20th, no significant growth differences as affected by planting density were observed in Keumsan strain, while decreased stem diameter, node number and leaf number were observed in Wanju strain planted at 80 cuttings/tray compared to 40 cuttings/tray. Fresh and dry weights were not significantly different as affected by planting density, but those were significantly increased in Wanju strain compared to Keumsan strain. When regrowth characteristics followed by the first harvest were measured on June 5th, significantly increased stem number was observed at 80 cuttings/tray compared to 40 cuttings/ tray. Fresh and dry weight were significantly increased in Keumsan strain planted at 80 cuttings/tray compared to 40 cuttings/tray, and dry weight were increased in Wanju strain compared to Keumsan strain. Wanju strain showed higher shoot yield, thicker stem, shorter node and larger leaf, and non-succulent stem under high planting density compared to Keumsan strain. Accordingly, the optimum density was 40 cuttings per tray, and Wanju strain was adequate for the cultivation system using a rice nursery tray.
Estimation of Physico-Chemical Characteristics of Domestic Aroma Rice and Foreign Aroma Rice
Kim, Jeong-Soon ; Ahn, Sang-Nag ; Kang, Hee-Kyoung ; Cho, Yang-Hee ; Gwag, Jae-Gyun ; Lee, Sok-Young ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 203~216
This study was conducted to provide the fundamental data based on the analysis of phsyco-chemical characteristics of domestic aroma rice and foreign aroma rice for breeding of aroma rice. The average amylose content of domestic aroma rice and widely cultured domestic traditional rice were 18.1% and 19.0% respectively. The Indica and the Japonica types were 25.6% and 25.0%. In the domestic rice of Tongil and Japonica type, the average protein content were 7.6% and 6.4% respectively. And the average protein content of foreign Indica and Japonica type were 7.6% and 7.0% respectively. And the average protein content of widely cultured domestic traditional rice was 5.6%. The Japonica type of rice shown a low protein content compared with Indica type of rice, and the foreign Indica types of rice exhibited a wide range of protein contents. The average alkali digestive value (ADV) of Tongil type of the domestic aroma rice was about 5.0 and the value of Japonica type was about 6.0. The average ADV of foreign Indica and Japonica type were 4.3 and 5.1 respectively. Also the average ADV of widely cultured domestic aroma rice was about 6.0. The foreign aroma rice were distributed a variable range of ADV value and lower than the both domestic aroma rice and widely cultivated domestic rice. In the whole aspect of the amylogram, the highest viscosity, the lowest viscosity and the last viscosity of the total resources, in domestic aroma rice were clearly lower with the next order, Japonica type of foreign aroma rice, Indica type of foreign aroma rice, Japonica type of domestic aroma rice, widely cultured domestic traditional rice, and Tongil type of domestic aroma rice. It shown the difference aspect of amylograms according to the eco-type of the domestic and foreign aroma and the general rice, and it was distinguishable in difference of the aspect of the amylogram of the endosperm of rice as non-glutinous rice, waxy rice, and middle-waxy rice.
Quantitative Analysis of Amylose and Protein Content of Rice Germplasm in RDA-Genebank by Near Infrared Reflectance Spectroscopy
Kim, Jeong-Soon ; Cho, Yang-Hee ; Gwag, Jae-Gyun ; Ma, Kyung-Ho ; Choi, Yu-Mi ; Kim, Jung-Bong ; Lee, Jeong-Heui ; Kim, Tae-San ; Cho, Jong-Ku ; Lee, Sok-Young ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 217~223
Amylose and protein contents are important traits determining the edible quality of rice, especially in East Asian countries. Near-Infrared Reflectance Spectroscopy (NIRS) has become a powerful tool for rapid and nondestructive quantification of natural compounds in agricultural products. To test the practically of using NIRS for estimation of brown rice amylose and protein contents, the spectral reflectances (
) of total 9,483 accessions of rice germplasm in Rural development Administration (RDA) Genebank ere obtained and compared to chemically determined amylose and protein content. The protein content of tested 119 accessions ranged from 6.5 to 8.0% and 25 accessions exhibited protein contents between 8.5 to 9.5%. In case of amylose content, all tested accessions ranged from 18.1 to 21.7% and the grade from 18.1 to 19.9% includes most number of accessions as 152 and 4 accessions exhibited amylose content between 20.5 to 21.7%. The optimal performance calibration model could be obtained from original spectra of brown rice using MPLS (Modified Partial Least Squares) with the correlation coefficients (
) for amylose and protein content were 0.865 and 0.786, respectively. The standard errors of calibration (SEC) exhibited good statistic values: 2.078 and 0.442 for amylose and protein contents, respectively. All these results suggest that NIR spectroscopy may serve as reputable and rapid method for quantification of brown rice protein and amylose contents in large numbers of rice germplasm.
Optimal HPLC Condition for Simultaneous Determination of Catechins and Caffeine in Green Tea Extracts
Choung, Myoung-Gun ; Lee, Min-Seuk ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 224~232
The health benefits associated with tea consumption have resulted in the wide inclusion of green tea extracts in botanical dietary supplements, which are widely consumed as adjuvants for complementary and alternative medicines. Tea contains polyphenols such as catechins or flavan-3-ols including (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-epicatechin gallate (ECG), and (-)-epigallocatechin gallate (EGCG), as well as the alkaloid, caffeine. The contents of catechins and caffeine in green tea are considered as a standard of quality evaluation of green tea. Therefor, the purpose of this study was to investigate the most suitable HPLC condition for simultaneous determination of catechins and caffeine in green tea extracts. The efficient HPLC analytical condition of catechins and caffeine contained green tea extracts was developed. The gradient elution employed a
i.d. YMC-pak ODS-AM 303 column. The gradient system was used two mobile phases. A gradient elution was performed with mobile phase A, consisting of 0.1% aqueous phosphoric acid, and mobile phase B, comprising 100% MeOH, and delivered at a flow rate of 1 mL/min as follows:
, 80% A;
A; 51 min, 80% A.
, 80% A. The UV detection wavelength was set at 280 nm. The limit of detection (LOD) for catechins and caffeine standards were under 50 ng/mL.
Comparative Study on Biological Activities of Colored Potatoes, Hongyoung and Jayoung Cultivar
Kang, Se-Chan ; Choung, Myoung-Gun ;
Korean Journal of Crop Science, volume 53, issue 2, 2008, Pages 233~238
This experiment was conducted to enhance the colored potatoes utilization and to determine the biological activity of colored potato extracts. In order to understand the factors responsible for the potent anti-oxidant ability of colored potatoes, it has been evaluated for anti-oxidative activity using oxygen radical absorbance capacity (ORAC) assay. 'Hongyoung' extract was significant anti-oxidant activities in ORAC assay. About two-fold higher radical absorbance capacity was found in 'Hongyoung' compared to that in 'Jayoung'. The ability of 80% ethanol extracts from colored potatoes to influence the inhibitory activity of nitric oxide (NO) and nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) has also been investigated. The various therapeutic benefit claims in the new functional medicinal usage of colored potatoes ascribed to the phenolic compounds and anthocyanin. This result revealed that the extracts of colored potatoes are expected to be good candidate for development into sources of free radical scavenger or COX-2 inhibiting agents.