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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 58, Issue 4 - Dec 2013
Volume 58, Issue 3 - Sep 2013
Volume 58, Issue 2 - Jun 2013
Volume 58, Issue 1 - Mar 2013
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Plantlet Regeneration via Somatic Embryogenesis from Hypocotyls of Common Buckwheat (Fagopyrum esculentum Moench.)
Kwon, Soo-Jeong ; Han, Myong-Hae ; Huh, Yoon-Sun ; Roy, Swapan Kumar ; Lee, Chul-Won ; Woo, Sun-Hee ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 331~335
DOI : 10.7740/kjcs.2013.58.4.331
Buckwheat sprout is used as vegetable, and also flour for making noodles, and so on. Currently, information about tissue culture in buckwheat is limited and restricted to micro-propagation. We carried out somatic embryogenesis and plant regeneration using hypocotyl segments as explant of the cultivated buckwheat species, Fagopyrum esculentum which differs from existing studies in the growth regulator combinations used. Maximum callus regeneration was induced on MS medium containing 2,4-dichlorophenoxyacetic acid (2,4-D)
, benzyladenine (BA)
and 3% sucrose. Friable callus was transferred to solidified MS media containing BA (
) with various concentrations of 2,4-dichlorophenoxyacetic acid for the induction of embryogenesis. The optimum concentrations of growth regulators (for regeneration of plantlet) were indole-3-acetic acid (
), Kinetin (
), BA (
). Only 2,4-D did not show any significant effect on callus induction or embryogenesis. Regeneration of embryonic callus varied from 5% to 20%. Whole plants were obtained at high frequencies when the embryogenic calli with somatic embryos and organized shoot primordia were transferred to MS media with 3% sucrose. The main objective of this research was to develop an efficient protocol for plant regeneration for common buckwheat, and to apply in future for genetic transformation.
Analysis of the Genetic Diversity and Population Structure of Amaranth Accessions from South America Using 14 SSR Markers
Oo, Win Htet ; Park, Yong-Jin ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 336~346
DOI : 10.7740/kjcs.2013.58.4.336
Amaranth (Amaranthus sp. L.) is an important group of plants that includes grain, vegetable, and ornamental types. Centers of diversity for Amaranths are Central and South America, India, and South East Asia, with secondary centers of diversity in West and East Africa. The present study was performed to determine the genetic diversity and population structure of 75 amaranth accessions: 65 from South America and 10 from South Asia as controls using 14 SSR markers. Ninety-nine alleles were detected at an average of seven alleles per SSR locus. Model-based structure analysis revealed the presence of two subpopulations and 3 admixtures, which was consistent with clustering based on the genetic distance. The average major allele frequency and polymorphic information content (PIC) were 0.42 and 0.39, respectively. According to the model-based structure analysis based on genetic distance, 75 accessions (96%) were classified into two clusters, and only three accessions (4%) were admixtures. Cluster 1 had a higher allele number and PIC values than Cluster 2. Model-based structure analysis revealed the presence of two subpopulations and three admixtures in the 75 accessions. The results of this study provide effective information for future germplasm conservation and improvement programs in Amaranthus.
Analysis of Chemical Factors Determining Taste of Soybean Sprouts
Hwang, In-Taek ; Lee, Kyong-Ae ; Kim, Hee-Seon ; Kim, Yong-Ho ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 347~352
DOI : 10.7740/kjcs.2013.58.4.347
Soybean sprout is a year-round traditional vegetable that is easily produced and relatively inexpensive in Korea. In addition, the sprout is known as a good source of protein, vitamins and minerals. The quality of the soybean sprout has been mainly evaluated only by its appearance like length, width, color, and the others without considering any odor or taste attributes. We studied the chemical factors affecting taste of soy sprouts cultivated with 5 recommended soybean cultivars through evaluation of chemical constituents in relation to their sensory characteristics. Correlation coefficient among the chemical constituents and sensory characteristics of soybean sprout showed that the linolenic acid and Ca contents were positively correlated with total acceptability of soybean sprout and histidine, aspartic acid, and serine showed a negative association with beany odor of soybean sprout. Multiple regression analysis was done to formulate selection criteria for good taste of soy sprout. The estimation of step-wise regression analysis conducted by 47 chemical components for major quality-related characteristics showed that linolenic acid and mineral contents were the main components increasing the acceptability of soybean sprout.
Variation of Panicle Differentiation Stage by Leaf Growth According to Rice Cultivars and Transplanting Time
Ku, Bon-Il ; Kang, Shin-Ku ; Sang, Wan-Gyu ; Choi, Min-Kyu ; Lee, Kyu-Jone ; Park, Hong-Kyu ; Kim, Young-Doo ; Kim, Bo-Kyong ; Lee, Jeom-Ho ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 353~361
DOI : 10.7740/kjcs.2013.58.4.353
The time of panicle initiation change by transplanting date, and this change is affected by heading ecotype and seedling age. So we assessed the variations of panicle initiation, spikelet differentiation and heading date affected by transplanting dates, rice cultivars and seedling ages. And we compared the growth durations and meterological factors between chief growth stages. The differences of growth duration from transplanting date to spikelet differentiation by seedling age were 1~3 days in all transplanting of Unkwang, but it increased to 4 days in Hwayeong transplanting on May 1 and June 30, and Nampyeong transplanting on June 30. The growth durations from panicle initiation to heading of Unkwang and Hwayeong increased until transplanting time by May 31, and decreased thereafter. The growth durations of Nampyeong increased in transplanting on May 16 and May 31. In each transplanting, mean temperature of 30 days after heading was highest in early transplanting, but sunshine hours in the period were highest in transplanting on June 30 in Unkwang, in transplanting on June 15 in Hwayeong, and higher in transplanting on May 31 and June 15 in Nampyeong. The growth duration between spikelet differentiation and heading showed variation according to rice cultivars and transplanting date, Those were 22~26 days in Unkwang, 21~27 days in Hwayeong and 21~28 days in Nampyeong.
Effect of Harvesting Time and Making Method on Feed Value and Fermentative Quality in Silage of Whole Crop Barley
Song, Tae-Hwa ; Park, Tae-Il ; Han, Ouk-Kyu ; Park, Hyong-Ho ; Cho, Sang-Kyun ; Oh, Young-Jin ; Kang, Hyeon-Jong ; Jang, Yun-Woo ; Park, Kwang-Geun ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 362~366
DOI : 10.7740/kjcs.2013.58.4.362
This experiment was conducted to obtain basic a information on feed value and fermentative quality of whole crop barley with different harvesting time and making method. As a result, in case of feed value, crude protein, NDF and ADF content were decreased with late harvest, but TDN was increased. In the silage, the results were similar and these patterns showed the same before and after the silage making. Thus, there was no significantly difference in bale and chopper. In case of fermentative quality, pH of the silages showed increasing with late harvesting time but the contents of organic acid did lower, and those tendencies were the same in both bale and chopper condition. But the lactic acid content were approximately 23 percent higher in chopped condition. In conclusion, ensiling at yellow ripe stage is better than other stages, chopped ensiling could improve fermentation quality.
Cultivar Comparison on Tocopherols, Tocotrienols, and Antioxidant Compounds in Rice Bran
Chun, Areum ; Lee, Yoo-Young ; Kim, Dae-Jung ; Yoon, Mi-Ra ; Oh, Sea-Kwan ; Choi, Im-Soo ; Hong, Ha-Cheol ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 367~375
DOI : 10.7740/kjcs.2013.58.4.367
The rice bran, a by-product of rice milling process, is well known for various functional components, such as tocopherol, tocotrienol,
-oryzanol, carrying antioxidant activities. This study was conducted to investigate the antioxidant components and antioxidant activities in rice bran of different Korean rice cultivars. The 8 isomers of vitamin E,
-oryzanol, flavonoids, and polyphenolics in rice bran from 16 Korean premium and high quality rice cultivars were quantified. DPPH and ABTS radical scavenging activities and reducing power of the ethanol extracts of rice bran were measured. 'Hopum' showed the highest total vitamin E content,
among the cultivars, and 'Hanseol' showed the lowest content. The rice bran showed different compositions of
tocopherol and tocotrienol among rice cultivars. The antioxidant contents were also different by cultivar; the
-oryzanol contents ranged from 1.99 mg/g (Unkwang) to 4.30 mg/g (Chilbo), the polyphenol contents ranged from 427.22 mg gallic acid eq./100 g (Odaebyeo) to 775.80 mg gallic acid eq./100 g (Hopum). 'Hopum' also had the highest DPPH and ABTS free radical scavenging activities, 9.82% and 187.5 AEAC mg/100 g, respectively. In vitro, the rice bran extracts from 'Hopum' had significantly higher antioxidant activities than that of other cultivars.
Evaluation of Resistance to Rice Sheath Blight (Rhizoctonia solani Kühn) of Rice Germplasms at Seedling Stage
Kim, Jeong-Ju ; Baek, Man-Kee ; Won, Yong-Jae ; Cho, Young-Chan ; Kim, Bo-Kyeong ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 376~382
DOI : 10.7740/kjcs.2013.58.4.376
Rice sheath blight (ShB), caused by Rhizoctonia solani K
hn, is one of the serious fungal disease resulting in severe yield loss in rice field worldwide. There are limited sources of genetic resistance and no commercial cultivar with high level of ShB resistance is currently available in Korea. In order to seek available resources with high level of resistance to ShB, 40 rice germplasms were used to evaluate disease reactions including ShB, leaf blast and bacterial leaf blight and these germplasms also examined agronomic traits such as days to heading, culm length, panicle length, No. of panicles, No. of spikelets per panicle and so on. There is wide variation in agronomic characters and disease reactions. Rice germplasms also showed considerably different ShB reaction caused by inoculation at seedling stage. Areumbyeo, Gayabyeo, IR579-Es44 and IR64 showed more strong reaction to ShB than the others. Especially, Gayabyeo is considerably available to develop a new variety with resistance to ShB in Korea.
Correlation between Leaf Size and Seed Weight of Soybean
Park, Gyu-Hwan ; Baek, In Youl ; Han, Won Young ; Kang, Sung Taek ; Choung, Myoung Gun ; Ko, Jong Min ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 383~387
DOI : 10.7740/kjcs.2013.58.4.383
This study was carried out to examine whether the leaf size is likely to be used as a selection criterion for large seed genotype in soybean (Glycine. max (L.) Merr.) breeding program. Two hundred twenty nine soybean germplasms which had collected in Korea, United States, China and Japan were used in this experiment. The area of unifoliate leaf, middle leaflet of first trifoliate and third trifoliate leaf ranged from
, 9.2 to
, and 7.2 to
, respectively. One hundred seed weight also showed great variation from 2.7 to 39.0 gram. The average leaf area of unifoliate, middle leaflet of first trifoliate and third trifoliate leaf were
, respectively, and that of seed average weight was 17.2 gram per one hundred seed. Significantly positive correlations were observed between seed weight and leaf area of unifoliate (r=
), first trifoliate (r=
) and third trifoliate (r=
), respectively. Both the leaf length and leaf width of unifoliate, middle leaflet of first trifoliate and third trifoliate leaf were significantly positively correlated with seed weight and both the correlations of unifoliate were higher than the other leaves. The correlations of leaf width in soybean leaflet were higher than those of leaf length. Leaf length/width (L/W) ratio of upper leaf was higher than that of lower leaf in the leaf size. Both the leaf area and leaf width of unifoliate leaf are the most suitable predictive characteristics of early selection in related to seed weight for soybean breeding program.
Protein Separation in Functional Rice Grains Using Two-Dimensional Gel Electrophoresis
Chung, Soo Im ; Lee, Sang Chul ; Kan, Mi Young ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 388~392
DOI : 10.7740/kjcs.2013.58.4.388
The proteins from functional rice cultivars (Nogwonchalbyeo, Giant embryonic, Arhyangchalbyeo, and Goamibyeo) and general white rice were extracted and separated using two-dimensional (2D) gel electrophoresis. A wide variation in the molecular weight (MW) and pH range of the expressed proteins in rice samples were observed. The green-kerneled rice (Nogwonchalbyeo) exhibited proteins with MW of 9-57 kDa and appeared at a pH range of 4-7. The Giant embryonic contained proteins with MW of 31-63 kDa and a pH range of 5-6. The aromatic glutinous rice (Arhyangchalbyeo) showed proteins with MW of 24-28 and pH of 5.8-6.8. The high-amylose rice (Goamibyeo) exhibited proteins with MW of 3-63 and pH of 5.2-5.6. The identified proteins uniquely found and highly expressed in each cultivar may have a significant role on rice functionality. The results illustrate that the 2D gel electrophoresis is a valuable method in the determination of the protein expression profiles in functional rice grains and may be useful in the identification of specific marker proteins associated with the functional property of rice.
Growth, Lodging Reduction as Affected by Iprobenfos-metconazole(IPM) in Direct-seeded Rice on Flooded Paddy Field
Lee, Kyehwan ; Choi, Bongsu ; Park, Jonghyun ; Woo, Sunhee ; Lee, Chulwon ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 393~398
DOI : 10.7740/kjcs.2013.58.4.393
Lodging in the direct seeded rice cultivation on flooded paddy is being severe problem due to the lower production and grain quality at ripening stage. This study was conducted to examine the effect of Iprobenfos-metconazole (IPM) treated 50, 40 and 30 days before heading respectively as a plant regulator to reduce the lodging at ripening stage of direct seeding rice cultivation. The culm length treated with IPM, especially the 4th culm internode, was shortened more than with untreated plot, and the most effective time was at 30 days before heading. At 20 days after heading the flag leaves colour showed more greening than in the untreated leaves and the plot with IPM treatment was to be maintained longer compared to the control plot. The Nitrogen concentration of leaves with IPM was lower than in the control plot, and
contents were higher than in the untreated plot and
ratio was increased more in the IPM plot than in the control plot. The breaking strength of 3rd and 4th culm internode with IPM treatment was higher than in the untreated plot, and the lodging index was reduced in the IPM plot significantly and the field lodging also was reduced. As the results the rice production in the IPM plot was increased more due to be higher ripening ratio and seed grain weight compared to the untreated plot to be occurred the field lodging.
Cooking Properties and Antioxidant Activity of Cooked Rice According to the Addition of Glutinous and Non-glutinous Sorghum
Woo, Koan Sik ; Ko, Jee Yeon ; Kim, Jung In ; Lee, Jae Saeng ; Song, Seuk Bo ; Cho, Jae Min ; Jung, Tae Wook ; Kim, Ki Young ; Oh, In Seok ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 399~407
DOI : 10.7740/kjcs.2013.58.4.399
The purpose of this study was to evaluate the physicochemical characteristic of the cooked rice added with glutinous and non-glutinous sorghum. The sorghum cultivars were Sorghum bicolor L. Moench cv. Hwanggeumchal, Nampungchal (glutinous), and Donganme (nonglutinous), and rice cultivar was Ilpum rice. The cooking properties and pasting characteristics of cooking rice adding with sorghum according to varieties and different addition rates evaluated. The cooking properties and pasting characteristics had significant changes with the varieties and different addition rates of sorghum. With increased addition rates of sorghum, the pasting temperature, peak viscosity, trough viscosity, breakdown viscosity, and final viscosity were decreased. With increased addition rates of sorghum, the total polyphenol and flavonoid contents before and after cooked rice were increased. Total polyphenol contents of 30% addition rates before cooking rice with Hwanggeumchal, Nampungchal, and Donganme sorghum were 1,693.30, 1,890.98 and
sample, whereas those after cooking rice with sorghum were 1,189.28, 1,190.42 and
sample, respectively. The high level of DPPH radical scavenging activity before and after cooking rice with sorghum were 126.29 and 70.58 mg TE/100g sample in the Donganme in 30% addition rates. Also, ABTS radical scavenging activity was 135.56 and 83.12 mg TE/100g sample, respectively. The results of this study show that the addition of sorghum can make cooked rice improved antioxidant activity.
Morphological Variation of Cultivated Types of Perilla Crop and Their Weedy Types in East and Southeast Asia
Kim, Jin-Ah ; Sa, Kyu Jin ; Choi, Seung Hun ; Lee, Ju Kyong ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 408~415
DOI : 10.7740/kjcs.2013.58.4.408
To better understand the morphological variation of the Perilla crop and their weedy types in East and Southeast Asia, we studied the morphological variation of 90 accessions by examining 10 morphological characteristics, such as flowering time, seed size, seed hardness, seed color, color of surface leaf, color of reverse side leaf etc. As a result, morphological variation determined that between cultivated var. frutescens and var. crispa, and between cultivated var. frutescens and its weedy type showed significant morphological differences in terms of seed size and seed hardness, whenever cultivated var. crispa and its weedy type could not showed significant differences in most morphological characters. In PCAs (principal component analysis), among 10 morphological characteristics, flower color (QL6), color of surface leaf (QL3), seed size (QN2), seed hardness (QL1), seed color (QL2), stem color (QL7), and color of reverse side leaf (QL4) contributed in negative direction on the first axis, while flowering time (QN1), leaf shape (QL5), and degree of pubescence (QL8) contributed in positive direction on the first axis. Among these morphological characters, particularly flower color (QL6), color of surface leaf (QL3), seed size (QN2), seed hardness (QL1), and degree of pubescence (QL8) were useful characters for discrimination between cultivated var. frutescens and weedy var. crispa, and between cultivated var. frutescens and its weedy type. However, most accession of cultivated and weedy types of var. crispa was not clearly discriminated by PCA analyses. Although the wild ancestral species of var. frutescens and of var. crispa are still unknown in East and Southeast Asia, the weedy types of Perilla crop may be the key taxon for our understanding of the origin of cultivated types of var. frutescens and var. crispa.
Effect of Water Uptake Rate on Germination Characteristics of Waxy Rice Seeds and Guaiacol Peroxidase Activity during Early Imbibition
Shon, Jiyoung ; Kim, Junhwan ; Lee, Chung-Kuen ; Yang, Woonho ; Yoon, Young-Hwan ; Chung, Nam-Jin ; Kim, Chung-Kon ; Kim, Bo-Kyung ; Choi, Kyung-Jin ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 416~423
DOI : 10.7740/kjcs.2013.58.4.416
Germination is controlled by internal factors of seeds and external factors such as water, temperature and light. We investigated the relationship between germination characteristics of four waxy rice cultivars and patterns of water uptake, antioxidant enzymes and free soluble sugars during early imbibition. Seed viabilities by tetrazolium test of four different rice cultivars were higher than 95% and germination rates of the hulled rice seeds were on 95% average. However, germination rate of intact rice among four cultivars showed a big difference depending on temperature. Water uptake of hulled and intact rice seeds during imbibition reached a stationary phase at around 30% moisture content. Although rates of water uptake were faster in hulled rice and high temperature than intact rice and low temperature condition, difference of those among cultivars was greater under low temperature than high temperature. The time required for rice seeds to uptake 30% water was negatively correlated with percentage of germination, germination energy, germination speed and mean germination time. Guaiacol peroxidase activity at 24h of imbibition was correlated with germination energy and germination speed but not percentage of germination. Catalase activity, soluble protein and maltose concentration at 24h of imbibition were not correlated with characteristics of germination. These results suggest that a time required for rice seeds to uptake 30% of water significantly correlated with germination and guaiacol peroxidase activity during early imbibition plays an important role in initiation of germination.
Comparison on Physicochemical and Cooking Properties of Milled Kernel in Waxy Corn Hybrids
Lee, Yu Young ; Lee, Choon-Ki ; Lee, Jin-Suk ; Kim, Mi-Jung ; Kim, Sun-Lim ; Kim, Yul-Ho ; Park, Hyang Mi ; Kim, Wook-Han ; Kwon, Young-Up ; Kim, Sung Kook ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 424~431
DOI : 10.7740/kjcs.2013.58.4.424
Consumption of waxy corn is steadily increasing due to consumer preference for natural food. However, availability of waxy corn is limited because most of them are used for steamed waxy corn. It is therefore important to create new demands of waxy corn using food processing technology. There is little prior research about characteristics of milled kernel in waxy corn. This study examined the physicochemical and cooking properties of milled kernel using nine waxy corn hybrids. Colored hybrids (Heukjinju, Miheukchal, and Eolrukchal1) showed high milling yield and low change of grain length after milling process compared to other hybrids. The total starch content ranged from 62.1 to 68.4% and the gelatinization temperature of starch was lowest in Yeonnong1 (
). The breakdown viscosity of Yeonnong1, Miheukchal and Heukjinju was higher than those of tested hybrids, whereas setback viscosity of those hybrids was lower. In cooking properties of milled waxy corn, water absorption and volume expansion rate were high in Yeonnong2 (84.9, 219.3%), Miheukchal (85.9, 211.4%), and Heukjinju (80.9, 203.7%). In the sensory test, the overall preference was significantly higher in Heukjinju and Miheukchal. Thus, Heukjinju, Yeonnong2, and Miheukchal showed good scores in milling yield, cooking properties, and the preference of sensory test. These results will provide fundamental information to extend milled waxy corns usage.
Comparison of Seed Viability Among 42 Species Stored in a Genebank
Lee, Ho-Sun ; Jeon, Young-Ah ; Lee, Young-Yi ; Lee, Sok-Young ; Kim, Yeon-Gyu ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 432~438
DOI : 10.7740/kjcs.2013.58.4.432
This study was conducted to compare seed viability among 42 species after ten years of storage in the midterm storage complex (
, 30-40% RH) at the National Agrobiodiversity Center (NAC) Korean genebank maintained by the Rural Development Administration (RDA), Republic of Korea and to suggest the relative seed longevity and suitable monitoring intervals. The germination data from initial tests and after ten years of storage were compared to measure changes in viability during storage. The decline in seed viability varied greatly among seeds from -11.5% for Triticum sp. to 80% for melon. Coriander, crowndaisy, safflower, cosmos, Chinesebellflower, waxgourd, melon, castorbean, Welch-onion, hollyhock, wild barley, and tallfescue showed significant decreases in viability of 34.2%, 73.4%, 36.5%, 30.0%, 40.2%, 71.3%, 80.0%, 65.9%, 45.5%, 51.4%, 53.0%, and 33.5%, respectively. Gardenpea, soybean, perilla, onion, wild rice, Italian-ryegrass, and pepper showed a 15-30% decline in viability, while the viability of morningglory, adzukibean, maize, and Capsicum sp. decreased by 15% to 5%. Chicory, radish, Chinese-cabbage, bottlegourd, watermelon, cucumber, pumpkin, Cucurbita sp., groundnut, kidneybean, clubwheat, sesame, wheat, Triticum sp., rice, barley, orchardgrass, buckwheat, and wild tomato showed changes in viability of <5%. The changes in storage viability also varied within families. The wild types of rice and barley showed rapid viability loss and presented different aspects from cultivars. Since seed viability of species, classified as index 1 or 2, showed germination losses >15% after ten years of storage, a viability test should be conducted with five year intervals, while species with germination loss of <15% (in index 3 or 4) can be retested at ten year intervals.
Screening Method for Excessive Water Tolerance at Germinating Stage of Peanut
Pae, Suk-Bok ; Hwang, Chung-Dong ; Lee, Myoung-Hee ; Kim, Sung-Up ; Oh, Ki-Won ; Lee, Byung-Kyu ; Baek, In-Youl ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 439~442
DOI : 10.7740/kjcs.2013.58.4.439
This study was conducted to develop the testing method for excessive water tolerance at germinating stage and to screen 31 domestic peanut cultivars. Regardless of peanut grain scales, the amount of seed absorption nearly reached the peak in 10 hours after imbibition. When peanut seed in vermiculate soil was directly soaked in water, ability of emergence did not reduced until 16 days and then sharply reduce to 25 days with non-emergence. When seeds germinated for 1, 2, 3, and 4 days after seeding (DAS) were soaked, the emergence abilities were distinctively varied according to the sequent soaking days such as 1, 2, 3, 4, and 5 days. This explained the negative relationship between first germinating days (DAS) and following soaking days. Using the method of 2 day germinating and 3 day soaking that show less than 70% of emergence ability, 31 peanut cultivars were applied to test excessive water tolerance. Emergence rates varied 0% to 69% according to cultivar. Cultivar Daekwang, Sinkwang, Daecheong and Baekseon had over 50% emergence rates. These results suggested that the degree of water resistance in germinating stage may be important point to evaluate the excessive water resistance among cultivars.
Hypoglycemic and Antioxidative Effects of Functional Rice Goami and Nokwon in High Fat-Fed Mice
Kang, Mi Young ; Son, Jayeon ; Lee, Sang Chul ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 443~450
DOI : 10.7740/kjcs.2013.58.4.443
Effects of newly developed functional rice grains Goami (high-amylose rice) and Nokwon (green-kerneled rice) on the glucose metabolism and antioxidative defense system in C57BL/6N mice under high fat diet condition were investigated. Animals were randomly divided into five groups (n = 8) and given experimental diets for eight weeks: normal control diet (NC), high fat diet (HF), and high fat diet supplemented with white rice (HF-WR), Goami rice (HF-GR), and Nokwon rice (HF-NR). At the end of the experimental period, the HF group exhibited markedly higher blood glucose level, insulin concentration, plasma lipid peroxidation and lower hepatic glycogen concentration than that exhibited by NC group. However, diet supplementation of Goami and Nokwon suppressed the high fat diet-induced hyperglycemia and oxidative stress through inhibition of the glucose-regulating enzymes and enhancement of the antioxidant enzymes activities. The results illustrate that the new functional rice Goami and Nokwon may be useful in the development of functional foods with preventive effect against high fat diet-induced hyperglycemia and oxidative stress.
A Comparison of Cooking Quality on Commercial Eco-Friendly Functional Rice
Kim, Joo-Hee ; Moon, Jung-Eun ; Kang, Mi-Young ; Lee, Sang-Chul ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 451~458
DOI : 10.7740/kjcs.2013.58.4.451
The physicochemical properties and cooking qualities of four rice varieties (Goami, Giant-embryonic rice, Baegjinju, Aranghyangchal) which grown under ecofriendly farming as development of material for chronic disease tailored instant rice and porridge, respectively, were investigated. The contents of crude protein, crude lipid and crude fiber were the highest in Goami. The water absorption rate of Aranghyangchal at
was higher than other rice. However on rice flour, the water absorption rate and solubility of all functional rices at
were higher than control (brown rice flour). In addition viscosity of all functional rices at
were higher than control (brown rice flour). In spite of brown rice, Aranhyangchal showed no significant differences about hardness of Ilpum (white rice). The sensory evaluation was shown that Aranghyangchal was the highest in glossiness, flavor, roasted nutty taste, cohesiveness and overall preference. Although Giant-embryonic rice and Baegjinju were brown rice, overall preference was higher than Ilpum (white rice). These study results were showed that the functional rices could be good to make instant rice.
Quality Characteristics and Antioxidant Activity of Noodle Containing Whole Flour of Korean Hull-less Barley Cultivars
Lee, Mi-Ja ; Kim, Kyung-Soon ; Kim, Yang-Kil ; Choi, Jae-Sung ; Park, Kwang-Geun ; Kim, Hyung-Soon ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 459~467
DOI : 10.7740/kjcs.2013.58.4.459
This study was conducted to investigate the effects of substituting whole barley flours on quality characteristics of noodles. Noodles were made with composite flour containing 20% whole barley flour of various hullless barley cultivars and the quality characteristics,
-glucan content and antioxidant characteristics were investigated. In amylogram characteristics, the initial pasting temperature and peak viscosity were increased, and setback was decreased in complex flour. Noodles containing barley flour had low lightness, yellowness and high redness compare to wheat noodle. Water absorption of cooked noodles was lower than wheat noodle. The value of swelling index was high in noodles containing non-waxy barley flour and low in noodles containing waxy barley flour. Hardness and gumminess of noodles were lower than wheat noodle. Noodles containing non-waxy barley had higher hardness, cohesiveness and gumminess than noodles containing waxy barley flour. Dahan, non-waxy barley cultivar showed similar characteristics with the wheat noodle.
-Glucan content and antioxidant activity were increased with adding barley flour. Cooked noodle had slightly high
-glucan content, low starch content and low antioxidant activity compared to value of uncooked noodle.
Analysis of Grain Quality Related Properties in Korean Rice Land-races Germplasm
Lee, Jung-Ro ; Ma, Kyung-Ho ; Lee, Gi-An ; Gwag, Jae-Gyun ; Lee, Jeom-Sik ; Kang, Hee-Kyoung ; Kim, Yeon Kyu ; Cho, Jin-Woong ; Lee, Sok-Young ;
Korean Journal of Crop Science, volume 58, issue 4, 2013, Pages 468~473
DOI : 10.7740/kjcs.2013.58.4.468
This study was conducted to make clustering analysis based on major physicochemical characteristics related to palatability of 394 Korean rice land-races. The items investigated were protein content, Mg content, K content, Mg/K ratio, Toyo-taste value, ADV (alkali digestion value) and amylose content. The range of the physicochemical characteristics such as amylose, protein, magnesium, potassium was from 12.4 to 28.9%, from 5.2 to 9.9%, from 12.7 to 37.7 mg and from 60.0 to 125.9 mg, respectively. In this experiment, the grain quality, properties significantly associated with the estimates of Toyo taste meter, were protein and amylose contents and hot viscosity. Also, at the expected taste as a cooking rice, using Toyo taste meter, a total 16 accessions were selected as good taste as "Ilpumbyeo". Also, IT173444, IT008530 and IT006554 were selected as remarkable sources for the cooking rice, in terms of gelatinated temperature and Toyo taste meter value.