• 제목/요약/키워드: CULTIVATED VARIETIES

검색결과 342건 처리시간 0.023초

대두 품종간 도복발생의 차이에 관한 연구 (Varietal Difference of Lodging Occurence in Soybean Plant)

  • 김기준;이홍석;김광호
    • 한국작물학회지
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    • 제27권3호
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    • pp.254-260
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    • 1982
  • 대두품종간 도복양상의 차이와 도복에 관여하는 요인을 분석하기 위하여 2개의 재배시기, 3수준의 재식밀도에서 10품종을 공시하여 실험한 결과를 요약하면 아래와 같다. 1. 도복발생주율은 밀식할수록 높아졌고 재식밀도와 품종간에 상호작용이 인정되어 도복주율의 품종별 재식밀도반응은 서로 달랐다. 2. 생육경과에 따른 도복진전양상은 4군으로 류별할 수 있는데 공시품종 Williams는 생육초기부터 후기까지 도복주율이 낮았으며 강림은 생육중기까지는 상대적으로 높은 도복비율을 보였으나 후기까지 보면 다른 품종보다 그 비율이 낮았다. 3. 공시품종중 Williams와 강림은 2개의 재배시기 및 3수준의 재식밀도 모두에서 도복에 강한 반응을 보였고 황금콩, 장엽콩 및 단엽콩은 특정한 재배환경에서만 도복에 견디었다. 4. 대두는 밀식할수록 초생엽절 윗부분의 주경이 휨으로써 발생하는 도복이 많았는데 도복에 강한 반응을 보인 품종들은 주경이 휨에 의한 도복발생빈도가 약한 품종보다 낮은 것이 특징이었다.

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Genetic diversity analysis of high yielding rice (Oryza sativa) varieties cultivated in Bangladesh

  • Epe, Isma Akter;Bir, Md. Shahidul Haque;Choudhury, Abul Kashem;Khatun, Asma;Aktar, Most Mohshina;Arefin, Md. Shamsul;Islam, Mohammed Aminul;Park, Kee Woong
    • 농업과학연구
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    • 제48권2호
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    • pp.283-297
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    • 2021
  • Investigation of genetic diversity and molecular characterization in high yielding rice varieties is important for their identification. The experiment was conducted during 2016 - 2017 to analyse the genetic diversity of fifteen high yielding rice varieties in Bangladesh by using random amplification of polymorphic DNA (RAPD) markers. Polymorphism was revealed in 12 RAPD primers out of 30, whereas no other reaction was detected on the remaining 18 primers. The 40 out of 45 bands (88.89%) polymorphics were produced by the primers and ranged from 50 to 100%. The maximum number of polymorphic bands was produced by the primer OPB-18 whereas the lowest number of polymorphic bands belonged to OPC-12. The genetic similarity coefficients were determined with the RAPD data, which ranged from 0.47 to 0.94. The unweighted paired group of arithmetic means (UPGMA) dendrogram presented the studied rice varieties into two major clusters. Moreover, the value of Nei's genetic diversity is 0.26 and the Shanon information index is 0.41. The study produced distinct positions, suggesting that the genotypes were different from each other. The results indicated that these markers could be efficient for comparing the genetic relationships, patterns of variation, and measurement of genetic distance among rice varieties. Considering all of these results, RAPD analysis is found to be an effective tool for estimating the genetic diversity of different rice varieties. The outcomes of this research may contribute to the germplasm data of rice accessions and a future breeding program of rice genotypes.

대관령지역에서 사료용 옥수수 품종별 생육특성과 수량성 (Growth Characters and Productivities of Corn Varieties at Deakwanryoung District of Korea)

  • 임영철;정종원;한성윤;최기준;임용우
    • 한국초지조사료학회지
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    • 제21권1호
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    • pp.39-44
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    • 2001
  • 대관령지역에서 사료용 옥수수 품종의 생육특성과 생산성을 비교 검토하여 생산성이 높은 품종을 농가가 선택할 수 있는 기초자료를 얻고자 국내에서 육성된 수원 19호를 대비품종으로 하고 현재 많이 재배되는 8개 장려품종을 공시하여 1999년도에 난괴법 3반복으로 대관령지소(해발 800m) 포장에서 수행한 결과를 요약하면 다음과 같다. 생육특성 중 간장은 DK501, GL499 품종이 각각 180, 198cm로 가장 적었고 그 외 품종은 230cm 내외로 품종간에 큰 차이가 없었다. 착수고는 간장이 적은 품종에서 낮게 나타났고 P3525, DK729는 각각 120, 116cm로 다른 품종에 비하여 10~l5cm 높았다. 경직경은 수원19호에 비하여 DK501를 제외한 전 품종에서 굵었으며 특히 P3144W가 24.2cm로 가장 굵었다. 생엽수는 숙기가 늦은 DK729, G4743이 각각 12.0, 12.3개/주로 가장 많았다. 출사기는 8월 10일~20일로 품종간에 10일 차이로 매우 크게 나타났다. 가장 빠른 품종은 DK501로 8월 10일, 가장 늦은 품종은 G4743으로 8월 20일이었다. 암이삭 비율은 출사기가 빠른 품종에서는 46% 이상 늦은 품종은 40% 이하이었다(P>0.1). 건물 및 TDN 수량은 P3352 품종이 각24.710, 17,470kg/ha로 가장 많았으며 그 다음이 DK729, G4743순이었다(P<0.05). 따라서 대관령지역에서는 조.중생종 품종인 P3352가 가장 수량도 많고 생육특성 면에서도 유리하여 적합한 품종으로 생각된다.

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새만금 간척지와 일반밭 토양에서 뚱딴지(Helianthus tuberosus L.) 재배시 생육 및 이눌린 평가 (Assessment of Growth and Inulin for Jerusalem Artichoke (Helianthus tuberosus L.) Cultivation in Saemangeum Reclaimed Land and Upland Soils)

  • 오양열;김승연;이광식;류진희;이수환;옥희경;정강호;강방훈;김길용
    • 한국환경농학회지
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    • 제39권3호
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    • pp.188-196
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    • 2020
  • BACKGROUND: In order to cultivate upland crops in reclaimed land, economically appropriate crops should be selected. Jerusalem artichoke (Helianthus tuberosus L.) is one of the primary sources for inulin in higher plants. The objective of this study was to evaluate and compare growth and inulin of H. tuberosus L. according to the cultivation region in Korea. METHODS AND RESULTS: 21 varieties of H. tuberosus L. were collected in Korea, and then 7 varieties of H. tuberosus L. were selected for this study. To compare growth and inulin, those varieties were cultivated in reclaimed land and upland soils. The growth of H. tuberosus L. significantly decreased when cultivated in reclaimed land. There was an increas at 17.8% in the content of white H. tuberosus L. tuber inulin in reclaimed land. CONCLUSION: The content of inulin in H. tuberosus L. tubers was found to be dependent on cultivation region and tuber color. There was a difference of the inulin content between the tubers with different colors in reclaimed land. Purple tubers of P20 were considered suitable varieties for cultivation in reclaimed land. White tubers of W1 and W8 were also considered suitable varieties for cultivation in reclaimed land.

감자 유전자원 평가 및 다양한 컬러 감자 품종 개발 (Evaluation of Potato Genetic Resources and Development of Potato Varieties with Diverse colors)

  • 임학태;이규화;구동만;양덕춘;전익조
    • 한국자원식물학회지
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    • 제16권3호
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    • pp.264-274
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    • 2003
  • 한국감자육종소재 은행(KPGR)에서 는 많은 감자유전자원을 수집함과 동시에 수집된 유전자원을 분석해서 감자육종에 활용하고 있다 다양한 유전자원 중에서 2001년 우리나라 준고냉지 지역인 장평과 양구에서 수확한 58가지 감자 계통 및 품종에서 식용 및 칩 가공에 적합한 품종 및 계통을 선발하였다. 감자의 선발 기준은 지역적 응성, 감자 괴경형태(눈 깊이, 모양, 표피색, 육색, 생산량, 더뎅이병 저항성과 중심공동 및 내부갈색저항성)와 감자의 칩 색도에 아주 큰 영향을 주는 환원당 함량 등 요소를 종합적으로 고려하였다. 기존 '수미'와 대등한 흰색 표피 품종은 '얼리밸리', '썸머밸리', '윈터밸리', '태복밸리'였고, '골든밸리'는 노란색 품종으로, '고구밸리'와 '주스밸리'는 적색표피 품종으로, '퍼플밸리'는 보라색 표피 품종으로 각각 선발되었다. 가공용 재배 품종인 '대서' 칩 색도와 비슷하고 생산량(4.0톤ha)이 비교적 높고 환원당 함량(0.30%이하)이 비교적 낮은 24계통 및 품종이 선발되었다. 선발된 계통 및 품종의 괴경형태 등을 종합적으로 고려하여 '태동밸리', '강심밸리', '강원밸리' 품종이 밝은 흰 색칩용으로 선발되었는데 환원당 함량은 각각 0.23%, 0.27%와 0.29%였으며; '보라밸리', '로즈밸리', Valley54는 칼라 칩용으로 선발하였는데 그중 '보라밸리' 의 환원당 함량은 0.26%로서 밝은 보라색 칩색도를 나타냈으며 '로즈밸리'의 환원당 함량은 0.19%로서 칩 색도는 밝은 황색을 나타냈으며 밸리54의 환원당 함량은 0.27%였다. '스틱밸리'와 밸리72은 프렌치 프라이용으로 선발하였는데 환원당 함량은 각각 0.22%와 0.15%로서 괴경의 형태가 비교적 긴 형태로서 프라이 색도는 밝은 담황색을 나타냈다.

Distribution and Characteristics of Plant Resources of Native Pyrus sp.

  • Ahn, Young-Hee
    • Plant Resources
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    • 제4권3호
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    • pp.157-160
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    • 2001
  • The wild Pyrus plants belong to the deciduous woody plants in Rosaceae family. Most are cultivated for fruit productions, but some for ornamental plants. There are 5 Pyrus species including Pyrus ussuriensis and 8 varieties cultivated in Korea. In Korea, these plants are populated near villages or on the hills, and they are easily propagated since their fruit are very juicy and quite big in size. Plant breeding to get improved cultivars is not difficult because the Pyrus plants are easy to cross breeding among its genus. Because not only this reason but there have been shown lots of variation in wild groups, the Pyrus plants inhabited in Korea are excellent deciduous woody plants and favorable fruit trees to develop ornamental plants. It is necessary to develop many kinds of fruit trees and ornamental trees containing genetically different character, so that it will be satisfied for many different people's taste and demands. Collecting lots of wild plant resource with diverse genes is necessary for plant breeding.

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제주도산 감귤속 식물의 성분 분류학적 연구 (Chemotaxonomic Studies on the Citrus Plants cultivated in Je Ju Island)

  • 고명자
    • Journal of Plant Biology
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    • 제25권1호
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    • pp.9-19
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    • 1982
  • A thin-layer chromatographic study was made of the chloroform-soluble and flavonoid fractions from the fruit peels of 16 species, 2 varieties and 5 formas of the Citrus plants cultivated in Je Ju Island for their interspecific relatinships. In addition, 3 hybrids and 9 native plants were also studied for their taxonomic position. Three phenograms were developed from these chromatographic data after cluster analysis via the unweighted paired group method using rithmatic average by Sneath and Sokal. These plants were grouped into 5 alliences based on the phenogram obtained from the chloroform-soluble fracitons, which were nearly identical to the subgenus rank by Tanaka, and rutinoside and neohesperidoside groups by Horowitz. Those from the flavonoid and methanol-soluble fractions were not able to evaluate the morphological classification except for a few cases.

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Distribution and Characteristics of Plant Resources of Native Pyrus sp.

  • Ahn, Young-Hee
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2001년도 The 8th International Symposium
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    • pp.15-19
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    • 2001
  • The wild Pyrus plants belong to the deciduous woody plants in Rosaceae family. Most are cultivated for fruit productions, but some for ornamental plants. There are 5 Pyrus species including Pyrus ussuriensis and 8 varieties cultivated in Korea. In Korea, these plants are populated near villages or on the hills, and they are easily propagated since their fruit are very Juicy and quite big In size. Plant breeding to get improved cultivars Is not difficult because the Pyrus plants are easy to cross breeding among its genus. Because not only this reason but there have been shown lots of variation in wild groups, the Pyrus plants inhabited In Korea are excellent deciduous woody plants and favorable fruit trees to develop ornamental plants. It is necessary to develop many kinds of fruit trees and ornamental trees containing genetically different character, so that it will be satisfied for many different people's taste and demands Collecting lots of wild plant resource with diverse genes is necessary for plant breeding.

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Inter Simple Sequence Repeat (ISSR) Polymorphism and Its Application in Mulberry Genome Analysis

  • Vijayan Kunjupillai
    • International Journal of Industrial Entomology and Biomaterials
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    • 제10권2호
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    • pp.79-86
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    • 2005
  • Molecular markers have increasingly been used in plant genetic analysis, due to their obvious advantages over conventional phenotypic markers, as they are highly polymorphic, more in number, stable across different developmental stages, neutral to selection and least influenced by environmental factors. Among the PCR based marker techniques, ISSR is one of the simplest and widely used techniques, which involves amplification of DNA segment present at an amplifiable distance in between two identical microsatellite repeat regions oriented in opposite direction. Though ISSR markers are dominant like RAPD, they are more stable and reproducible. Because of these properties ISSR markers have recently been found using extensively for finger printing, pohylogenetic analysis, population structure analysis, varietal/line identification, genetic mapping, marker-assisted selection, etc. In mulberry (Morus spp.), ISSR markers were used for analyzing phylogenetic relationship among cultivated varieties, between tropical and temperate mulberry, for solving the vexed problem of identifying taxonomic positions of genotypes, for identifying markers associated with leaf yield attributing characters. As ISSR markers are one of the cheapest and easiest marker systems with high efficiency in generating polymorphism among closely related varieties, they would play a major role in mulberry genome analysis in the future.

벼멸구의 생태형 (Biotypes of the Brown Planthopper, Nilaparvara lugens (Stal))

  • R.C.삭세나;A.A.바리온
    • 한국응용곤충학회지
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    • 제22권2호
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    • pp.52-66
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    • 1983
  • The brown planthopper, N. lugens (Stal), has become a serious pest of rice in tropical Asia during the last decade. At high pest density, its feeding damage causes 'hopperburn' or complete wilting and drying of the rice plant. It also transmits grassy and ragged stunt virus diseases. The estimated losses caused by the pest in tropical Asia exceed $US\$300$ millions. While cultivation of resistant rice varieties has proved to be highly effective against the pest, their long-term stability is threatened because of the evolution of prolific biotypes which can destroy these varieties. At present, identification of biotypes is based principally on the differential reactions of host rice varieties to the pest and on host-mediated behavioral and physiological responses of the pest. Recent findings of morphological differences in adult rostrum, legs, and antennae, body parts that possess receptors for host plant location and discrimination, and cytological differences in N. lugens populations maintained as stock cultures strongly complement other biotype studies. So far, three N. lugens biotypes have been identified in the Philippines. Biotype I can survive on and damage varieties that do not carry and genes for resistance, while Biotype 2 survives on resistant varieties carrying Bph 1 gene and Biotype 3 on varieties carrying gene bph 2. However, none of these biotypes can survive on varieties with genes Bph 3 or bph 4. Several varieties which are resistant in the Philippines are susceptible in India and Sri Lanka as the South Asian biotypes of N. lugens are more virulent than Southeast Asian biotypes. To monitor the pest biotypes in different geographical regions and to identify new sources of resistance, an International Brown Planthopper Nursery has been established in many cooperating countries. The evolution of biotypes is an exceedingly complex process which is governed by the interactions of genetic and biological factors of the pest populations and the genetic makeup of the cultivated varieties. While the strategy for sequential release of varieties with major resistance genes has been fairly successful so far, the monegenic resistance of these varieties makes them vulnerable to the development of the pest biotypes. Therefore, present breeding endeavors envisage utilizing both major and minor resistance genes for effective control of the pest.

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