• 제목/요약/키워드: rice seeds

검색결과 548건 처리시간 0.032초

Fusarium moniliforme 감염벼종자의 소독과 주사전자현미경적 조직관찰 (Effect of Seed Treatment and Observation of Seeds Infested with Fusarium moniforme by Scanning Electron Microscope)

  • 성재모;이형순;유승헌;신관철
    • 한국식물병리학회지
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    • 제1권1호
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    • pp.51-55
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    • 1985
  • Fusarium moniliforme에 감염된 벼줄기의 도관부에서도 균사가 관찰되었다. Benlate T와 Busan 30을 처리한 종자에서도 소독시간에 관계없이 F. moniliforme가 분리되지 않아 소독효과가 인정되었으나 현미에서 소독시간에 관계없이 F. moniliforme가 검출되어 방제효과가 떨어졌다.

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DEVELOPMENT OF SUPER WIDE SPREADER FOR DIRECT RICE SOWING IN WET PADDY FIELD

  • Kota Motobayashi;Yukio Yaji;Kim, Shoichi ura
    • 한국농업기계학회:학술대회논문집
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    • 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
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    • pp.999-1008
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    • 1996
  • The development and improvement of the originally designed direct rice sowing machine were carried out for the specific purpose of saving labor and increasing the efficiency of field operations in rice cultivation in the northern part of Japan. the prototype super wide spreader has a unique mechanism which propels rice seeds by compressed air and spreads them from the pivoting nozzle while the machine is in motion. The effective field capacity of sowing operation is about 6 ha/h. This spreader can also handle granular chemicals such as fertilizers, herbicides, pesticides and insecticides.

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Effect of selection for anthocyanin contents of black colored rice on anti-allergic activity

  • Han, Sang Jun
    • 한국육종학회지
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    • 제40권1호
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    • pp.22-25
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    • 2008
  • The anti-allergic effect of C3GHi rice breeded from the cross of 'Heugjinjubyeo' and 'Suwon 415' was investigated. Antiscratching behavioral effects of the water extract of C3GHi was higher than Heugjinjubyeo. Orally administered BCRs' extracts exhibited potent inhibitory activity against scratching behaviors which were induced by compound 48/80. The inhibitory effect of C3GHi against the passive cutaneous reaction was more potent than that of Heugjinjubyeo. These finding suggest that black colored rice, especially C3GHi, may inhibit scratching behaviors and passive cutaneous reaction, and its anti-allergic activities were increased by means of selecting high C3G rice seeds.

Contents of Phytic Acid and Minerals of Rice Cultivars from Korea

  • Lee, Heok-Hwa;Rhee, Hae-ik;Lee, Sang-Young;Kim, Chon-Ho;Park, Yong-Soon
    • Preventive Nutrition and Food Science
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    • 제2권4호
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    • pp.301-303
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    • 1997
  • To elucidate the contents of phytic acid and minerals in rice produced in Korea, samples of 68 verieties of brown rice and 9 varieties of polished rice were analyzed for phytic acid by colorimetric method, and Ca, Fe, Mg and Zn contents by the atomic absorption spectrophytometer. Selenium was measured by fluorometry. Averages of phytic acid content of the 68 brown rice were 12.6 g/kg, whereas that of the 8 polished rice were 1.83 g/kg on dry matter. Averages of Ca, Fe, Mg and Zn contents on the 68 brown rice were 111, 7.4, 1,068 and 19.1 mg/kg, and those of the polished rice were 45.6, 2.1, 250 and 14 mg/kg, respectively. A averge of selenium content of the brown rice was 38.3 $\mu\textrm{g}$/kg.

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Measuring the efficiency and determinants of rice production in Myanmar: a translog stochastic frontier approach

  • Wai, Khine Zar;Hong, Seungjee
    • 농업과학연구
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    • 제48권1호
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    • pp.59-71
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    • 2021
  • This study investigated the extent to which rice producers from the Ayeyarwaddy Region of Myanmar could improve their productivity if inputs were used efficiently in rice cultivation. To achieve this objective, simple random sampling was used to collect data from 300 rice growers in the study area. Data were analyzed with the translog stochastic frontier approach to understand the production efficiencies. The study further estimated the influencing factors that affect the efficiency levels of rice farmers. The empirical result reveals that the average technical, allocative, and economic efficiencies were at 76.11, 47.85, and 34.15%, respectively. This suggests that there is considerable room for improving rice production by better utilization of the available resources at the current level of technology. This study suggests that strenthening agricultural training programs and adoption of improved rice varieties may reduce overall inefficiencies among rice farmers in Myanmar. Factors like age, household size, education, farming experience, farm size, rice variety, training, and off-farm income have a significant impact on increasing/decreasing farmer's efficiency. Efficiency can be improved by establishing farmer field school programs to increase the scale of operations. The government should encourage young educated people to participate in paddy production and also intervene to reduce input prices and control the quality of seeds.

잡과병 관련 조리법에 관한 문헌고찰 - 조선시대부터 현대까지의 조리서를 중심으로 - (A Literature Review on Recipes in Connection with Japgwabyung - Focus on Recipe Data Published in Korea from the Joseon Dynasty to the Modern Era -)

  • 강재희
    • 한국식생활문화학회지
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    • 제28권5호
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    • pp.450-462
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    • 2013
  • The purpose of this study was to investigate the literature in connection with the names and recipes of japgwabyung recorded between 1392 and 2000. The names of japgwabyung were classified into eight types, including japgwabyung, japgwapyun, japgwajumbyung, japgwago, and japgwadanja. The names of japgwatteoks, classified with recipes, were Jjjin-tteoks, Chin-ttoks, and Salmeun-tteoks. The main ingredients used for japgwabyung were glutinous rice, nonglutinous rice, and buckwheat. The subsidiary ingredients were fruits, spices, seeds, and sweeteners. This study classified the names of japgwabyung, depending on the recipes, as japgwabyung, japgwapyun, japgwadanja, and japgwainjulmi. In addition this study classified recipes, depending on names, as steamed rice cakes made of sedimentary rice, steamed valley rice cake, steamed rice ]cakes with stuffs filled in and with bean powder dredged after striking, and steamed or struck rice cake with bean powder dredged. The main ingredients were glutinous rice and nonglutinous rice. The subsidiary ingredients were chestnuts, jujubes and dried persimmons, with other fruits being added according to taste.

Comparison of Superoxide Dismutase and Peroxidase Activities in Rice Varieties

  • Chung, Ill-Min;Kim, Kwang-Ho;Ahn, Joung-Kuk;Lee, Jin-Ohk
    • 한국작물학회지
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    • 제45권5호
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    • pp.277-281
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    • 2000
  • Fifty-four Korean native and 28 foreign varieties harvested in 1998 and 1999 were examined for superoxide dismutase (SOD) and peroxidase (POD) activities. The SOD and POD activities of leaves extracts in Korean native and foreign rice varieties showed variation at the heading stage. The activities of SOD and POD changed with growth stage. In comparison of storage duration, the SOD and POD activities of the extract from three months stored seeds in Korean native (CV=53.3%) and foreign rice (CV=57.9%) varieties were higher than that of stored rices for a year in seed extracts although the activities among varieties did not show significant variation. Also, the averaged activity of foreign rice varieties (SOD=12.9%) was relatively higher than that of korean native rice varieties (SOD=10.7%). The test of activity at the enzymatic level related to antioxidative activity suggests that the rice varieties with higher antioxidative potentials can be developed and also may provide information with rice breeder to breed rice variety with a high antioxidative activity.

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벼 체세포배를 알긴산 캡슐에 넣어 제작한 건조형 인공종자 (Production of Dry-Type Artificial Seeds Using Alginate-Encapsulated Rice Somatic Embryos)

  • 정원중;민성란;송남희;유장렬
    • 식물조직배양학회지
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    • 제22권1호
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    • pp.1-5
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    • 1995
  • 벼의 인공종자를 무균상에서 건조시킴으로써 건조형 인공종자를 제조하였다. 1/2 MS배지에서 80%의 수분 손실률을 가진 인공종자는 20%가 발아하였다. 0.1 mg/L ABA가 첨가된 알긴산용액으로 제조한 인공종자는 0-90%의 수분손실률에서 최고 1.7배까지 발아율이 향상되었다. 이러한 결과는 ABA가 인공종자의 제조 및 건조과정에서 물리적 혹은 생리적인 저해에 대한 보호기능을 나타낸 것으로 사료된다.

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오이 절편과 배지를 이용한 Botryosphaeria dothidea 분생포자의 생성과 분출 (Production and Exudation of Botryosphaeria dothidea conidia Using Cucumber Disks and Cereal Media)

  • 김기우;박은우
    • 한국식물병리학회지
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    • 제14권1호
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    • pp.46-51
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    • 1998
  • A method for inoculum production of Botryosphaerisa dothidea was developed using cucumber disks and cereal media. Disks of cucumber fruits, and cereal media of barley, wheat, and rice seeds were inoculated with mycelial plugs of B. dothidea and incubated at 27$^{\circ}C$. Pycnidia were produced on the surface of cucumber disks and seeds after 5 days of inoculation. When the inoculated barley seeds were immersed in sterilized distilled water for 5 minutes, abundant conidia of B. dothidea were exuded from mature pycnidia. Conidia were held together by mucilage as they were released from an ostiole. Compared with the conventional method for inoculum preparation using agar media, such as potato-dextrose agar and oatmeal agar, this method could minimize the tedious work required for inoculum preparation within a shorter period of time.

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