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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 :
Lee, Sang Chul
Volume & Issues
Volume 54, Issue 4 - Dec 2009
Volume 54, Issue 3 - Sep 2009
Volume 54, Issue 2 - Jun 2009
Volume 54, Issue sup1 - Apr 2009
Volume 54, Issue 1 - Mar 2009
Selecting the target year
Proper Transplanting Time for Considering Rice Quality at Reclaimed Saline Land in Gyehwado
Kim, Young-Doo ; Baek, Man-Gee ; Lee, Jun-Hee ; Ko, Jong-Cheol ; Choi, Min-Kyu ; Park, Hong-Kyu ; Choi, Won-Young ; Kim, Bo-Kyeong ; Kim, Chung-Kon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 339~345
This experiment was carried out to identify the proper transplanting time at reclaimed saline land in the southwestern area of Korea from 2006 to 2007. The rice cultivars tested were Unkwangbyeo(Early maturing one), Gopumbyeo(Medium maturing one) and Samgwangbyeo, Sindongjinbyeo, Cheonghobyeo, Hopyeongbyeo(Mid-late maturing one). The results are summarized as follows. No. of spikelet per the unit area was lower at transplanting on May 20 and wasn't different in those of the other transplanting time. The ripened grain rate was high transplanted May 20 in Unkwangbyeo, but high transplanted from June 1 to June 20 in Mid-late maturing Cultivar. The yield of head rice was high transplanted June 10 and June 20 in Unkwangbyeo, Sindongjinbyeo, Hopyeongbyeo, but June 1 and June 20 in Samgwangbyeo, Cheonghobyeo. The protein content was high transplanted early in Unkwangbyeo, Samgwangbyeo, and late in Gopumbyeo, Sindongjinbyeo, Cheonghobyeo, but wasn't differ among transplanting time in Hopyeongbyeo. Considering the rice growth, the rice good quality, the yield of milled and head rice, the proper transplanting time was June 10 in Unkwangbyeo, Sindongjinbyeo, whereas was June 10 in Samgwangbyeo, Cheonghobyeo, Hopyeongbyeo.
Seed Purity Test and Genetic Diversity Evaluation Using RAPD Markers in Radish (Raphanus sativus L.)
Huh, Man-Kyu ; Choi, Joo-Soo ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 346~350
The cultivated radish (Raphanus sativus L.) is a major vegetable crop in the world wide and fast-growing species that grows inhabitats of six continents. It is very important to determine hybrid seed purity in the production of hybrid Brassica vegetable seeds to avoid unacceptable contamination with self-inbred (sib) seeds. The use of random amplified polymorphic DNA (RAPD) markers for evaluating seed purity in
-hybrid radish cultivars demonstrated. One hundred eighty seeds from the F1 male and female harvest were subsequently screened for seed purity using 13 primers. The 13 primers result in 17 cultivar-specific bands and 23 variable RAPD bands scored for cultivar. RAPD analysis of hybrid seeds from the harvest revealed 128 seeds tested except underdevelopment and decayed seeds were sibs. Especially,
hybrids of radish, OPC13, OPD20 were presented clear hybrid bands. It maintains higher than average level of genetic diversity compared with their correspondent parents. RAPD amplification of DNA extracted from germinated individuals from the female harvest reveal that 10 of 208 seeds tested were self-inbred (4.8%). RAPD analysis of hybrid seeds from the male harvest revealed 7 of the 208 seeds tested were sibs (3.4%). The RAPD may lead to a better insight in to the hybrid seed purity.
Growth, Rice Yield and Edible Quality of Rice under Naturally Reseeded Chinese Milk Vetch Cropping System
Kim, Sang-Yeol ; Oh, Seong-Hwan ; Hwang, Woon-Ha ; Choi, Kyung-Jin ; Park, Sung-Tae ; Kim, Jeong-Il ; Yeo, Un-Sang ; Kang, Hang-Won ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 351~356
Growth, milled rice yield and edible quality of rice in naturally reseeded Chinese milk vetch(CMV)-rice cropping system was compared with those in rice mono cropping on silty loam soil in Milyang from 2006-2008. Practicing natural reseeding technology recorded high CMV reseeding stand ranging from 565-805 plants
and resulting in the production of 13.0-17.0 kg N/10a from the CMV plant biomass which is greater than the recommendation rate of 9 kgN/10a. The plant height of rice plant grown in natural reseeding field is shorter at tillering stage but it was similar to the rice mono cropping at later stage. Dry matter production had similar trend to plant height. On the other hand, the leaf color in naturally reseeded CMV-rice cropping system was similar to the rice mono cropping up to panicle heading stage but it was high at mature stage, indicating that the nitrogen was provided by the CMV decomposition until later stage of rice. The yield components such as culm number
was greater and 1,000-brown rice weight was heavier than those of rice mono cropping but the ripened grain ratio was lower in naturally reseeded CMV-rice cropping system. Milled rice yield of naturally reseeded CMV-rice cropping system was similar to that of rice mono cropping. However, head rice percentage of milled rice was lower due to low ripened grain ratio. This result indicates that natural CMV reseeding technology can completely replace chemical fertilizer in CMV-rice cropping system.
Optimum Sieve-slit width for Effective Removal of Immature Kernels based on Varietal Characteristics of Rice to Improve Milling Efficiency
Lee, Choon-Ki ; Kim, Jung-Tae ; Choi, Yoon-Hee ; Lee, Jae-Eun ; Seo, Jong-Ho ; Kim, Mi-Jung ; Jeong, Eung-Gi ; Kim, Chung-Kon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 357~365
On the purpose to improve the milling efficiency as well as head-rice percentage after milling, an experiment to improve the removal ability of immature kernels in the immature brown rice separator (IBRS) was performed focused on varietal characteristics. The removal ability of immature grains by the IBRS was absolutely depending on kernel thickness of brown rice. The kernel thickness of the tested rice varieties distributed from 1.79 mm in Nonganbyeo to 2.16 mm in Daeribbyeo 1. Although there were some variation among rice varieties, it was roughly suggested that the suitable sieve-slit widths for good separation of the immature kernels were 1.9 mm for the varieties thicker than 2.08 mm in thickness, 1.8 mm for the varieties with 2.00-2.08 mm thickness, 1.7 mm for the varieties with 1.90-2.00 mm thickness, and 1.60-1.65 mm for the varieties thinner than 1.7 mm. It was found out that the higher the proportions of immature kernels in brown rice, the more conspicuous the improvement of milling efficiency as well as head rice rates by their removals. With increasing the sieve slit-widths beyond an optimum range, the losses of mature grains increased sharply. For effective separation of immature kernels, it was suggested that the optimum sieve-slit width should be set up depending on both of the kernel thickness and the critical loss limit of mature kernel.
The Optimum Operating Conditions of Indented-Cylinder Length Grader to Remove Broken Rice based on Varietal Characteristics
Lee, Choon-Ki ; Song, Jin ; Yun, Jong-Tag ; Seo, Jong-Ho ; Lee, Jae-Eun ; Kim, Jung-Tae ; Jeong, Gun-Ho ; Kim, Chung-Kon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 366~374
To determine the optimum operating conditions of the indented cylinder length grader based on varietal characteristics, broken rice removal capabilities were measured on the milled rice of 41 varieties at different conditions consisted of 3 types of indented cylinders with different indent-opening diameters and 3 different collecting-angles of broken rice. The broken rice removal capabilities were swayed by the indent's opening diameter and depth as well as the angle of the collecting trough of broken rice on the point of instrument, and by the kernel length and width as well as 1000 grain weight of milled rice on the point of rice variety. When the angle of broken rice collecting-trough reached to near the horizontal center line of the indented cylinder on the direction of upward turning side, which was referred
in this paper, the amount of rice collected in trough increased, whereas the loss of head rice also increased. Considering the removal rate of broken rice as well as loss of head rice, it was thought that the suitable angle of trough for broken rice collecting was located
depending on varietal characteristic and indent opening diameter. It was thought that 4.2 mm or more of indent opening diameter was recommendable for the rice varieties having heavier 1000 grain weight than 22.3g, as well as larger sizes than 2.9 and 5.2 mm in width and length of rice kernel, respectively; 3.8 mm for the small-sized thin kernels, and a proper diameter between 3.8 and 4.2 mm for short to middle kernels. The varieties with relatively shorter length compared to width of kernel were more difficult to separate the broken rice than the opposite ones. For effective separation of that, it seems that some specific indent shapes such as wider opening and shallow depth etc. are required. When the broken rice content were excessively high, wider diameters of indent openings than specified sizes were thought to be the better.
Major character analysis of CAX 1 (cation exchanger 1) transgenic rice plants in In Vivo
Kim, Kyung-Min ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 375~383
This study was carried out to develop transgenic rice cultivars with the CAX1 (accession no. U57411) gene. We successfully selected the transgenic rice plants over-expressing the Arabidopsis H+/
antiporter CAX1 (accession no. U57411) gene in T6 generation. The brown rice of the CAX1 expressing rice contained 13.4~68.0 % more calcium
than that of the wild type and 5 lines were selected based on the phenotypes compared to the control cultivar at the GMO field. The CAX1 expressing transgenic rice plants were similar in phenotype to the wild type during the whole growth period. Also these selected 4 lines appeared to be resistant to blast, cold and water solution compared with the wild type. Difference in 1,000 grain weight of brown rice was observed among each line but grain shape did not show any morphological alternations. These results suggest the enhanced Ca-substrate specificity of CAX1 exchanger in donor plant. Therefore, intact CAX1 exchanger can be functionally useful for
nutrient enrichment of rice with reduced accumulation of undesirable cation.
Germination Characteristics of Chinese Milk Vetch(Astragalus sinicus L.) Seeds Produced in China and Korea
Kim, Sang-Yeol ; Oh, Seong-Hwan ; Choi, Kyung-Jin ; Park, Sung-Tae ; Kim, Jeong-Il ; Yeo, Un-Sang ; Kang, Hang-Won ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 384~389
Germination characteristics of Chinese milk vetch(CMV) seeds produced from Hanam Province, China and Milyang, Korea were investigated to give basic information on the stability of seedling establishment in the CMV cultivation. The germination percentage of the imported CMV seed from China varied according to importation year and seed collection site ranging from 79~95%. The germination of black colored seed coat was lower than the light green colored ones and germination by seed weight was not significantly different. Although the seed germination was lower under dark than in the presence of light, it was not significantly different. The germination of the imported CMV seed slightly declined to only less than 6% after one-year of storage under natural environment conditions but it significantly decreased after two years. However, when the seed was stored at the
, the seed germination was the same as after two years of storage. On the other hand, fresh CMV seed produced in Milyang, Korea had only 8% germination due to seed coat dormancy but the germination increased to 73~85% after breaking seed dormancy after a year of storage. The high germination percentage of 72~82% was still maintained even after 27 months of seed storage unlike the CMV seed produced from China. These results indicate that CMV seeds do not require light for germination and the seed from China should be used within one-year after importation while the seeds produced from Korea can be used even after two years from harvest for stable CMV seedling establishment in the CMV-rice cropping system.
Comparison of Growth Characteristics and Ginsenoside Contents of 3-Year-Old Ginseng (Panax ginseng C. A. Meyer) by Drainage Class and Shade Material in Paddy Soil
Lee, Sung-Woo ; Kim, Gum-Sook ; Hyun, Dong-Yun ; Kim, Yong-Burm ; Yeon, Byeong-Yeol ; Kang, Seung-Won ; Kim, Young-Churl ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 390~396
To select optimal shade material in paddy soil, growth characteristics and ginsenoside contents were investigated in new cultivar, 'Cheonpoong' of three-year-old ginseng cultured under three kinds of shade materials such as three-layered blue and one-layered black PE (polyethylene) net (TBPN), blue PE sheet (BPSS), and aluminium-coated PE sheet (APSS). The order of light transmission ratio and air temperature by shade materials were BPSS > APSS > TBSB among three shade materials. Average soil water tension in PDC and IDC was 64 mbar (absolute soil moisture, 25%) and 123 mbar (absolute soil moisture, 17%), respectively, and soil water tension in IDC was changed more distinctly than that of PDC by season and shade materials. Yield in PDC was distinctly decreased more than that in IDC because of the increase of discolored-leaf and rusted-root ratio. BPSS and TBPN among three shade materials were the most effective on the increase of yield in PDC and IDC, respectively. Ratio of rusty-colored root showed not significant difference by drainage class and shade materials. Contents of panaxatriol ginsenoside (Rg1, Re and Rf) were decreased in PDC, while it of panaxadiol ginsenoside (Rb1, Rc and Rd) were increased in IDC. Total ginsenoside contents of IDC was distinctly higher than that of PDC, and BPSS showed the highest contents among three shade materials regardless of poorly and imperfectly drainage class.
Changes of Microclimate Responses and Chlorophyll Content(SPAD) to Different Shading Materials on Korean Ginseng (Panax ginseng C. A. Meyer) Bed
An, Young-Nam ; Choung, Myoung-Gun ; Kang, Kwang-Hee ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 397~406
This study was carried out to investigate the microclimate (photosynthetically active radiation and temperature) response to different shading materials(shade plate, and polyethylene net) on Korean ginseng(Panax ginseng C.A. Meyer) bed. Photosynthetically active radiation(PAR) under polyethylene net was approximately 24 ~ 30% higher than that under shade plate on sunny day. Also, PAR was remarkably decreased from the front to the rear rows of ginseng beds. Temperature under polyethylene net was higher than that of shade plate. Internal temperature under polyethylene net was 1.9 ~ 3.1% higher than that under shade plate at the different rows of ginseng bed. Mean of total daily temperature under polyethylene net was higher at the rear rows than at the front rows, while that under shade plate was higher at the front rows than at the rear row of ginseng bed. Mean of total daily temperature on sunny days(April 15 and May 17) was 7.3% lower under shade plate than above outside but, polyethylene net was 0.7% high, while that on cloudy days(April 11 and May 15) was 1.6% higher under polyethylene net than above outside, but shade plate was 0.7% low. Also, overall mean of total daily temperature under polyethylene net was 7.0, 7.8, and 8.8 % on sunny day(April 15 and May 17), and 1.7, 1.6, and 3.5% on cloudy day(April 11 and May 15) higher than that under shade plate, respectively. The SPAD values of 6 years old ginseng at two point(front, center) in bed under shade plate showed the highest value, and the lowest under polyethylene net. The SPAD of 6 years old ginseng at rear in bed was not statistically significant under two shading materials.
Effect of Nursery stage and Plug Cell Size on Seedling Growth of Waxy Corn
Kim, Sung-Kook ; Jung, Tae-Wook ; Lee, Yu-Yong ; Song, Duk-Yong ; Yu, Hong-Seob ; Lee, Choon-Woo ; Kim, Yee-Gi ; Kwak, Chang-Gil ; Jong, Seung-Keun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 407~415
To investigate the effects of seeding date, nursery days and plug cell size on seedling growth and quality of waxy corn. This study was carried out in the field of the National Institute of Crop Science in 2007. Varieties used were two waxy corn hybrids cvs. Chalok# 1 and Chalok# 4. The plant height, number of leaves and dry weight of waxy corn seedlings were significantly affected by seeding dates and plug cell size, while no differences between varieties. The growth of seedlings was faster in March 14 seeding than in May 8 and July 4 seedings. Based on plant height, March 14 seeding, May 8 seeding and July 3 seeding reached suitable size for transplanting after 30 days (21.6cm), 15 days (25.5~26.9cm) and 10 days (21.6~24.0cm) in the nursery, respectively. Seedlings of March 14 seedling and May 8 and July 3 seeding reached suitable number of leaves i,e. 2~3 leaves, 15~20 days after seeding on March 14 and 10 days after seeding on May 8 and July 3. Dry weights of 30 days seedling for March 14 seeding, 20 days seedling for May 8 seeding and 15 days seedling for July 3 seeding were 0.43g, 0.57~0.67g and 0.53g, respectively, and the dry weight of seedlings increased by 2~3 folds at the later nursery days. The suitable nursery days of waxy corn were 20 days on March 14 seeding and 10~15 days on May 8 or July 3 seeding.
Effect of Seed Priming Treatment on the germination of Sesame
Shim, Kang-Bo ; Cho, Sang-Kyun ; Hwang, Jung-Dong ; Pae, Suk-Bok ; Lee, Myoung-Hee ; Ha, Tae-Jung ; Park, Chang-Hwang ; Park, Keum-Yong ; Byun, Jae-Cheon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 416~421
This experiment was conducted to find out optimum priming treatment conditions to the sesame seed as a preliminary study for enhancing sesame germination properties. Effective priming agents and concentrations for sesame seed were
, 200 mM and PEG6000, -1.0 MPa respectively. Optimum priming temperature and duration were
, 4 days in view of germination speed and germination percentage. PEG6000 with -1.0 MPa was selected as an efficient priming treatment condition at
, 4 days. This study suggested that priming treatment to sesame seed would be an effective technique enhancing sesame seed germination and shortening time to the
at the field condition, but the efficiency of priming treatments to the sesame seed would be strongly dependent on individual or integrated conditions of priming agent, concentration, temperature and duration etc.
Morphological Traits of S598A Sweetpotato as an Industrial Starch Crop
Kim, Kyung-Moon ; Kim, Ji-Yeon ; Kim, Jung-Il ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 422~426
Sweetpotato is one of the important starch crops, current more considered as an industrial crop rather than food because it has higher starch content (over 80% of biomass), it is used for bio resources for industrial area. In this study, we generated S598A (a mutant gene of oat phytochrome A) sweetpotato plant using Agrobacterium-transformation method. Morphological characteristics of S598A plant were compared with the wild type sweetpotato, S598A had darker green leaves, increased chlorophyll content higher than to two-fold, delayed leaf senescence, shorter plant height (60% shorter than that of the wild type), more number of leaves and petioles about 1.8-fold, shorter petiole length (30% shorter), 1.2-fold more branches and 1.6-fold thicker stem diameters. From this study, S598A plants with such phenotypic characteristics might be able to use the solar energy efficiently, to have increased tolerance to biotic and abiotic stresses and finally to increase productivity (not only starch yield but also root biomass yield). S598A sweetpotato lines are under field trials.
Development of Seashore Paspalum Turfgrass with Herbicide Resistance
Kim, Kyung-Moon ; Song, In-Ja ; Lee, Hyo-Yeon ; Raymer, Paul ; Kim, Beom-Seok ; Kim, Wook ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 427~432
Seashore Paspalum (Paspalum vaginatum Swartz) is a warm season grass and indigenous to tropical and subtropical regions of coastal areas worldwide. The species is used as feed for cattle and horses and has been very successful for golf courses worldwide. One of the most outstanding characteristics of seashore paspalum is its tolerance to saline soils compared to other warm season turfgrasses. The development of new seashore paspalum cultivars with improved traits could be facilitated through the application of biotechnological strategies. The purpose of this study was to product for herbicide resistant seashore paspalum using Arobacterium-mediated transformation and this study is the first report on transformation and herbicideresistant transgenic plants in seashore paspalum. Embryogenic calli were induced from the seeded variety of pseashore paspalum. Embryogenic calli were transformed with Agrobacterium tumefaciens strain EHA105 carrying the binary vector pCAMBIA3301 with two genes encoding gusA and bar. Transformed calli and plants were selected on medium containing 3 mg/l PPT. PCR detected the presence of the gusA and bar gene, indicating both genes are integrated into the genome of seashore paspalum. A chlorophenol red assay was used to confirm that the bar gene was expressed. By application of herbicide BASTA, the herbicide resistance in the transgenic seashore paspalum plants was confirmed.
Flowering Responses and Floral Characteristics of Ipomoea batatas Varieties
Ahn, Young-Sup ; Chung, Mi-Nam ; Lee, Joon-Seol ; Kim, Young-Guk ; An, Tae-Jin ; Min, Kyung-Soo ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 433~440
Korean sweetpotato, Ipomoea batatas, varieties were examined for their flowering response as a fundamental research to improve breeding efficiency by hybridization of this crop. Under 10.0~10.5 hours short day condition, self-rooted plants of three varieties such as Shinmi, Hongmi and Hwangmi flowered sparsely or moderately, and those of fourteen varieties including Eunmi flowered very sparsely. Under 10.6~12.0 hours day length condition, self-rooted plants of three varieties such as Shinmi, Hongmi and Hwangmi flowered very sparsely. Under the day length longer than 12 hours, none of the tested plants flowered. In all the sweetpotato plants grafted on morning glory, flowering occurred with varying degrees by varieties and day lengths. Under 10.0~10.5 hours day length, thirty two varieties including Hongmi flowered moderately or profusely, and one variety such as Mokgye 1 flowered sparsely. Under 10.6~12 hours day length, twenty three varieties including Sinchunmi flowered moderately or profusely, nine varieties including Jeungmi flowered sparsely, and Mokgye 1 didn't flower at all.
Analysis of genetic diversity and population structure of rice cultivars from Africa, Asia, Europe, South America, and Oceania using SSR markers
Cheng, Yi ; Cho, Young-Il ; Chung, Jong-Wook ; Ma, Kyung-Ho ; Park, Yong-Jin ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 441~451
In this study, 29 simple sequence repeat (SSR) markers were used to analyze the genetic diversity and population structure of 125 rice accessions from 40 different origins in Africa, Asia, Europe, South America, and Oceania. A total of 333 alleles were detected, with an average of 11.5 per locus. The mean values of major allele frequency, expected heterozygosity, and polymorphism information content (PIC) for each SSR locus were 0.39, 0.73, and 0.70, respectively. The highest mean PIC was 0.71 for Asia, followed by 0.66 for Africa, 0.59 for South America, 0.53 for Europe, and 0.47 for Oceania. Model-based structure analysis revealed the presence of five subpopulations, which was basically consistent with clustering based on genetic distance. Some accessions were clearly assigned to a single population in which >70% of their inferred ancestry was derived from one of the model-based populations. In addition, 12 accessions (9.6%) were categorized as having admixed ancestry. The results could be used to understanding the genetic structure of rice cultivars from these regions and to support effective breeding programs to broaden the genetic basis of rice varieties.
Rice Quality Characterization According to Damaged Low Temperature in Rice Plant
Kim, Deog-Su ; Song, Jin ; Lee, Jung-Il ; Chun, A-Reum ; Jeong, Eung-Gi ; Kim, Jung-Tae ; Hur, On-Sook ; Kim, Sun-Lim ; Suh, Sae-Jung ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 452~457
The objective of this study was to provide fundamental data on breeding cultivar and cultural technique to identify quality characterization according to damage degrees in rice when are damaged at low temperature. For induction of cold damage, we treated the irrigation water at
from the panicle formation stage to the heading date. The rice products were harvested by grades according to the sterility ratio and investigated 5 items of quality analysis including ripened grain ratio, brown/rough rice ratio, 1000 grain weight of brown rice, protein content, and amylose content. The quality analysis were characterized by each items according to the sterility ratio. As a result, the ripened grain ratio was y=1.0444x-7.6597(
), protein content was y=-0.046x+10.875 (
), and head rice ratio was y=-0.2306x+104.32 (
), but the amylose content, brown/rough rice ratio and the milled/brown rice ratio were not significant. The rice plants, which injured by the low temperature, had bad influence in the yield and quality. Consequently, the breeding of rice cultivar and development of cultural technique are required to improve its cold tolerance.
Saponin Content and Quality for the Promotion of White Ginseng Water Extraction Conditions
Han, Jin-Soo ; Li, Xiangguo ; Park, Yong-Jun ; Kang, Sun-Joo ; Kim, Jung-Sun ; Nam, Ki-Yeul ; Lee, Ki-Teak ; Choi, Jae-Eul ;
KOREAN JOURNAL OF CROP SCIENCE, volume 54, issue 4, 2009, Pages 458~463
In this study, white ginseng water extract (WGWE) solutions were analyzed to set up the functional saponin content and quality optimization condition. The highest saponin content among the total white ginseng extracts was 8.32 mg/10 ml which was extracted at
for 18 hours. In addition, the saponin content decreased according to the increased extraction temperature and time. The highest content of
and Re was 0.89 mg/10 ml, 0.82 mg/10 ml at
for 18 hours which decreased according to the increased extracted temperature and time. The highest content of
was 1.67 mg/10 ml at
for 24 hours which decreased according to the increased time. The turbidity, sweetness and reducing sugar content were increased according to the increased extracted time at
, but pH were decreased according to the increased extracted time. Therefore, the most appropriate white ginseng extracting method have to extracted the proper temperature for saponin content at first time in combination with raise the temperature for taste at second time.