• 제목/요약/키워드: Rice cultivars

검색결과 988건 처리시간 0.029초

찰벼품종을 달리하여 제조한 유과의 품질 특성 비교 (Comparison of Some Characteristics Relevent to Yukwa (Fried Rice Cookie) made from Different Waxy Rice Cultivars)

  • 최영희;강미영
    • 동아시아식생활학회지
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    • 제10권1호
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    • pp.71-76
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    • 2000
  • This study was carried out in order to investigated the degree of expansion, textural and sensory characteristics of Yukwa made from various cultivars of waxy rice, With 5 varieties of waxy rice and a nonwaxy rice, Yukwa were prepared by the standardized method that had been established optimum preparation conditions. Yukwa made from Shinsunchalbyeo and Whasunchal showed lower degree of expansion than Hangangchalbyeo and IR 29, but showed higher crispness and softer texture among tested waxy rice cultivars. Sensory characteristics of these cultivars showed high score in flavor, crispness and preference. Whasunchalbyeo and Shinsunchalbyeo were appropriate varieties for Yukwa preparation and they were both short grain in length/width. Whasunchalbyeo has the highest score of water uptake and reducing sugar content in Key word.

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Physiological Properties of Two Japonica Rice (Oryza sativa L.) Cultivars: Odae and Ilpum

  • Cho, Hye-Jeong;Heo, Kweon;Umemoto, Takayuki;Wang, Myeong-Hyeon
    • Journal of Applied Biological Chemistry
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    • 제50권3호
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    • pp.127-131
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    • 2007
  • The properties of two cultivars of japonica rice, Odae (early ripening variety) and Ilpum (late ripening variety), were compared. They grew on MS (Murashige and Skoog) medium but the growth of both cultivars was strongly retarded by 50 mM or more salt. There was no clear difference between the growths of seedlings of the two cultivars for the first 24 h after germination. The amylopectin chain-length profiles of the two cultivars did not differ significantly, and amylopectin content was estimated at $16.0{\pm}0.4%$ in cv. Odae and $16.4{\pm}0.4%$ in cv. Ilpum. A total of 114 RAPD (randomly amplified polymorphic DNA) fragments ranging from 0.4 to 2.5 kb were isolated from the two cultivars, 61 from cv. Odae and 53 from cv. Ilpum, indicating that there is little genetic variation between them.

Growth and Gibberellins level of Two Rice Cultivars as Influenced by Different Nitrogen Containing Compounds

  • Jang, Soo-Won;Hamayun, Muhammad;Sohn, Eun-Young;Kang, Sang-Mo;Choi, Kwang-Il;Shin, Dong-Hyun;Lee, In-Jung
    • Journal of Crop Science and Biotechnology
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    • 제11권4호
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    • pp.223-226
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    • 2008
  • Seedlings of two rice cultivars i.e. cv. Daesanbyeo and cv. Dongjinbyeo were analyzed for growth and endogenous gibberellins (GAs) in response to nitrogen nutrition applied in the forms of $KNO_3$, $(NH_4)_2SO_4$ and $NH_4NO_3$. All the growth parameters showed an increase in N applied treatments and their magnitudes of increase were different depending on different nitrogen fertilizer forms. The endogenous GAs contents were increased with N application but differentially affected by various N-forms in both rice cultivars. In cv. Daesanbyeo, maximum amount of bioactive $GA_1$ was recorded for $(NH_4)_2SO_4$, while maximum amount of bioactive $GA_1$ in cv. Dongjinbyeo was observed in $NH_4NO_3$ applied treatments. In both rice cultivars, $KNO_3$ applied rice plants contained least $GA_1$ contents. Also, $GA_{19}$ was the most abundant GA found in rice seedlings whereas $GA_4$ was absent at seedling stage. Our study indicated that different rice cultivars showed different responses for the same fertilizer depending upon the response potential of each cultivar and the pertinent physiological responses to changes of endogenous GAs in rice cultivars, which were comparatively lesser in magnitude.

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질소시비량에 따른 벼 생리생태적 특성 연구 (Physiological and Ecological Comparison of Rice Cultivars Grown in Low Fertilized Condition)

  • 구홍모;유오종;박종현
    • 현장농수산연구지
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    • 제20권1호
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    • pp.175-185
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    • 2018
  • 개체군생장율(CGR)은 유수형성기와 출수기 사이에 가장 높았는데, 주남벼, 낙동벼, 소비벼 등이 높았으며, 이삭의 등숙속도는 시비량이 증가할수록 증가하였고, 출수 후 20일까지 가장 많이 증가하고, 그 이후에는 점차 감소하는 경향이었는데, 주남벼, 소비벼에서 빨랐다. 관행재배에서 수량이 높은 품종은 소비재배에서도 수량이 높았으며, 소비재배시 수량에 가장 많은 영향을 미치는 수량구성요소는 단위면적당 영화수로, 고도의 정의 상관관계를 나타냈다. 또한 백미품위는 시비량이 증가할수록 감소하였는데, 소비벼의 품위가 가장 낮았으며, 사미와 분상 질립의 증가가 원인이었다.

Relationships between kernel quality of appearance and yield characters in japonica and Indica rice cultivars

  • Miyazaki, Akira;Ishida, Yu;Yamamoto, Yoshinori;Tu, Naimei;Ju, Jing;Cui, Jing
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.301-301
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    • 2017
  • Subspecific difference of the percentage of white immature kernels (WIK) between japonica and indica rice cultivars was analyzed in relation to ripening temperature and yield characters. Thirty-three Chinese and 10 Japanese rice cultivars, including 32 japonica and 11 indica, were cultivated with three different cropping seasons for three years. The results were as follows: (1) Indica had less number of panicles, larger number of spikelets per panicle with higher yield, and longer and narrower kernels than japonica. In japonica, Chinese cultivars had less number of panicles and larger number of spikelets per panicle than Japanese cultivars. In addition, WIK was significantly higher in Chinese cultivars than in Japanese cultivars, because of the higher percentage of milky white kernels, even at similar temperature conditions during ripening. On the other hand, WIK in indica was not significantly different between the production areas and between the cropping seasons. (2) Regardless of subspecies, WIK in a large number of Chinese cultivars increased with increasing temperature during ripening within 20 days after heading, while this relation was uncommon in Japanese cultivars, showing the low temperature response. However, some Chinese cultivars had the low WIK with the low temperature response. (3) WIK in japonicawas positively correlated with 1000-kernel weight, spikelet density, kernel width and thickness, but negatively correlated with panicle length and grain filling percentage, while in indica it was positively correlated with panicle number per area, grain filling percentage, brown rice yield and kernel width, but negatively correlated with kernel length. These results indicated that WIK in both subspecies had a close relation to kernel size, and that WIK was high in japonica cultivars with wide and thick kernels and in indica cultivars with short and wide kernels.

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Physiological and Biochemical Responses of Fifteen Rice Cultivars to UV-B Radiation

  • Sung Jwa-Kyung;Chung Jong-Wook;Lee Sang-Min;Lee Yong-Hwan;Choi Du-Hoi;Kim Tae-Wan;Song Beom-Heon
    • 한국작물학회지
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    • 제50권1호
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    • pp.39-44
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    • 2005
  • This study was conducted to examine the physiological and biochemical responses against UV-B radiation in the seedling of 15 different rice cultivars, having the different physiological sensitivities. Out of 15 rice cultivars tested, moderate and susceptible groups showed significant decreases in biomass and RGR (relative growth rate). Contents of total chlorophyll were reduced remarkedly by irradiation of UV-B. In all rice cultivars tested, the content of chlorophyll a was strongly decreased, while the contents of chlorophyll b were slightly reduced without showing clear different among three groups and 15 cultivars. Carotenoid content was largely reduced by UV-B radiation, whereas polyamine content was moderately increased. The contents of MDA (malondialdehyde) that reflect the level of lipid peroxidation of cell membranes were clearly increased by UV-B stress, showing higher content in susceptible cultivars than moderate and torelant cultivars. The physiological important parameters highly related to visible injury were leaf color, chlorophyll, carotenoid, and lipid peroxidation, whereas biomass and polyamines were not closely correlated. Based on this results, it was concluded that changes of visible injury and the contents of chlorophyll and MDA could be adequately applied and utilized as physiological indicators to UV-B radiation.

벼의 품종별 이앙시기가 미질 특성에 미치는 영향 II. 미립의 외관특성과 화학적 성분의 변화 (Characteristics of Grain Qualtiy at Different Transplanting Times among Rice Cultivars)

  • 고재권
    • 한국자원식물학회지
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    • 제11권1호
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    • pp.64-69
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    • 1998
  • This experiment was conducted to investigatd the variation of some apearance chemical components at National Honam Agricultural Experiment Station in Korea. the treatements consisted of five transplating times, form May 5 to July 5 at 15-day interval , and six cultivars ; two early-maturing, two mid-maturing and two latematuring cultivars. The results showed that the variatio of grain appearance such as length-wide ratio was not significantly different in early -maturing cultivars, but mid-and late-maturing cultivars made slightly a round shape of grain in case of early transplanting. Percentage of complete grain was found to be high at transplanting of MAy 20 inearly-maturing cultivars and on June 5 in mid-and late-maturing ones. PERcentage of existed embryo after milling showed high at early transplanting of May 5 for early -maturing cultivars, and at the late transplanting of June 5 in early and late maturing one. The chemical components of rice grain showed high in protein , lipid,ash and amylose content inthe earlier transplanting, and also revealed high in carbohydrates, magnesium and potassium in the later transplanting of all cultivars.

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영남내륙 지역 과거 20년간 기후와 벼 조만성별 쌀 수량 변화 (Effect of Climate on the Yield of Different Maturing Rice in the Yeongnam Inland Area over the Past 20 Years)

  • 신종희;한채민;권중배;김상국
    • 한국작물학회지
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    • 제64권3호
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    • pp.193-203
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    • 2019
  • 본 연구는 영남내륙에 속하는 대구 및 안동 지역의 벼 수량에 영향을 미치는 수량구성요소와 기상요소를 파악하고자 하였다. 과거 20년간 이들 지역의 기상변화를 분석한 결과 벼 재배기간 중 평균기온은 대구지역보다 안동지역에서 $+0.9^{\circ}C/10$년으로 2배 이상의 상승폭을 보였다. 이는 생식생장기의 기온상승이 주요 원인으로 분석되었다. 강수량은 감소한 반면 누적 일조시수는 현저하게 증가하였는데 특히 안동지역의 일조시수 증가 폭이 컸다. 대구의 쌀 수량성은 꾸준히 증가하여 2000년 초반 5년 평균 수량보다 최근 5년간 평균수량이 중만생종의 경우 18% 정도 현저한 수량 증가를 보였다. 벼 수량과 수량구성요소의 관계를 분석한 결과 대구지역 중생종의 수량 증가는 현미천립중과 등숙율의 증가가 주요 요인으로 작용하였으며, 중만생종의 경우 포기당 이삭수, 등숙율 및 제현율의 증가가 쌀 수량 증가에 영향을 미친 것으로 분석되었다. 안동의 경우는 중생, 중만생종에서 천립 중의 증가가 수량증가의 요인으로 분석되었다. 벼 수량과 기후요소와의 상관관계를 분석한 결과 대구지역에서 재배된 중만생종 벼의 쌀 수량은 등숙기의 일조시수와 높은 상관을 보였다. 안동지역 중만생종은 영양생장기 최고기온과 생육전반 일조시수의 증가가 수량에 유의한 영향을 미치는 것으로 판단되었다.

Oxyfluorfen에 대한 내성(耐性) 및 감수성(感受性) 벼품종(品種)의 생리활성(生理活性) 기구 (機構) - III. Protoporphyrinogen oxidase(Protox)활성(活性)과 Protoporphyrinogen IX(PPIX) 축적(蓄積) (Different Physiological Activity of Selected Rice Cultivars to Diphenylether Herbicide, Oxyfluorfen - III. Differential Protoporphyrinogen Oxidase(Protox) Activity and Protoporphyrinogen IX(PPIX) Accumulation)

  • 국용인;구자옥;전재철
    • 한국잡초학회지
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    • 제16권2호
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    • pp.150-159
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    • 1996
  • Oxyfluorfen 내성(耐性) 및 감수성(感受性) 벼품종(品種)과 감수성 피를 공시하여 oxyfluorfen 처리에 의한 protox 활성저해(活性沮害), PPIX 축적량(蓄積量)과 tetrapyrro1e 생합성(生合性) 억제제(抑制齊) 처리에 의한 oxyfluorfen의 제초활성(除草活性) 억제효과를 조사하였다. 1. Oxyfluorfen 처리에 따른 protox 활성저해(活性沮害)는 내성(耐性) 벼품종(品種)들보다 감수성(感受性) 벼품종(品種)들과 피에서 컸다. 특히,$10^{-6}$ 처리 이상의 농도에서 감수성(感受性) 벼품종(品種)들과 피에서는 완전히 억제되었으나, 내성(耐性) 품종(品種)들에서는 무처리에 대비하여 32~59%의 활성(活性)을 유지하였다. 2. 처리농도가 증가할수록 PPIX의 축적량(蓄積量)은 증가하였고, 광노출 4시간까지는 증가하나 그 이후에는 감소하는 경향이었다. 3. Oxyfluorfen 처리에 의한 PPIX 축적량(蓄積量)은 암조건(暗條件)에서보다 광조건(光條件)에서 많았다. 광 암조건(光 暗條件)에서 감수성(感受性) 벼품종(品種)들과 피는 내성(耐性) 벼품종(品種)들에 비하여 PPIX 축적량(蓄積量)이 많았다. 특히, 감수성(感受性)인 피는 PPIX 축적량(蓄積量)이 벼품종(品種)에 비해 많았다. 4. Tetrapyrrole 생합성(生合性) 억제제(抑制齊)인 GC와 DA를 처리하면 oxyfluorfen에 의한 제초활성(除草活性)은 억제되었으며, 내성(耐性) 벼품종(品種)보다는 감수성(感受性) 벼품종(品種)이나 피에서 그 효과가 떨어지는 경향으로서 엽록소 함량이나 PPIX 축적량(蓄積量)에서도 동일한 경향을 나타내었다.

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도열병 저항성 유전자와 연관된 SSR 마커를 이용한 양질미 품종의 유전적 다양성 (Genetic Diversity of High-Quality Rice Cultivars Based on SSR Markers Linked to Blast Resistance Genes)

  • 황흥구;권수진;조영찬;안상낙;서정필;문헌팔
    • 한국작물학회지
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    • 제49권3호
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    • pp.251-255
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    • 2004
  • 최근 비교적 재배면적이 넓은 일미벼, 대산벼, 동안벼와 이들의 모본들로 구성된 23품종의 유전적 다양성을 조사한 결과를 요약하면 다음과 같다. 1. 1999년에서 2001년에 잎도열병과 이삭도열병이 심하게 발병한 일미벼. 대산벼, 동안벼는 밀양95호를 모본으로 육성되었다. 2. 밀양95호를 모본으로 하는 품종들에 대해 SSR 마커를 이용하여 유전적 다양성을 조사한 결과 57개 유전자좌위에서 170개(평균 3.0개)의 alleles이 관찰되었으며 대립유전자수는 2개에서 7개까지 다양하였다. 특히, RM249, RM206, OSR20은 6개 이상의 대립유전자를 가져 근연의 자포니카 벼품종간의 유전적 다양성 평가에 유용하게 이용될 수 있을 것으로 판단된다. 3.증폭된 밴드의 유무를 바탕으로 품종간 유전적 거리를 산출하여 군집분석을 실시한 결과 크게 4개의 군으로 나뉘었으며 일미벼, 대산벼, 동안벼는 모본인 밀양95호와 유전적 배경이 매우 유사하였다. 4. 같은 계보상의 품종들에 대해 도열병 저항성 유전자 인근의 마커를 이용한 유전적 다양성 분석결과가 계보도와 일치하여 이들 품종들의 저항성 유전자형 또한 유사할 것으로 추청할 수 있었다. 5. 조사품종의 계보상의 allele 전이를 분석한 결과 11번 염색체의 RM254의 3번째 allele과 12번 염색체의 OSR32의 2번째 allele이 밀양95호로부터 계속 전이되었음을 알 수 있었으며 이들 alleles의 도열병 이병화와의 연관성 여부는 추후에 검토가 이루어져야할 것이다.