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Ecological and Genetical Studies on Multi-herbicide Resistance of of Echinochloa oryzicola Vasing.

Research Project

Project/Area Number 12660044
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 植物保護
Research InstitutionKyoto University

Principal Investigator

YAMASUE Yuji  Kyoto University, Graduate School of Agriculture, Associate Professor, 農学研究科, 助教授 (60093332)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2000: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsHerbicide resistance / Tainu-bie / Echinochloa oryzicola / Echinochloa phyllopogon / Herbicide resistance / 除草剤 / 雑草 / 多除草剤抵抗性
Research Abstract

Similarities in morphological characters and AFLP fingerprints were studied between 15 multiple-herbicide resistant strains of Echinochloa oryzicola Vasing. derived from accessions collected in various rice fields of Sacramento Valley in California, with a reference to susceptible (S) strains. Morphological characters of the plant and spikelet were determined in a field experiment. All R strain plants were small and slender, being reflected by small size in plant height, flag leaf length and width and in culm diameter. Their spikelets were also smaller and slender. The mean coefficients of variation among R strains values were much small than those among S strains, indicating large similarities in plant and spikelet morphology among 15 R strains. Cluster analysis with the Ward's method exhibited that R strains clustered at early clustering stages and morphologically apart from S strains that largely varied. AFLP electropherograms of R strains also showed a large similarity between them. In the cluster dendrogram based on the UPGMA, R strains grouped differently form the group of eight S strains, but were clustered in six groups different in Nei and Li's coefficients, suggesting that R strains very resembles each other but a little differed between them in genetic constituents. It was concluded that R strains originated from a preexisting and preadapted variant E. phyllopogon in population in Sacramento Valley of California. During period of successive generations, descendents of the variant increasing variation in morphological and AFLP fingerprinting traits by rare outbreeding and segregation of heterozygous traits were dispersed by means such as birds and water channels, and exposed to the natural selection by herbicides for extended period, that led for R biotypes to become tangible by rice growers.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 辻綾一郎, A.J.Fischer, 山末祐二: "タイヌピエの多剤抵抗性に関する生理遺伝学的研究-形態およびAFLP解析によるR, Sバイオタイプの類縁関係"雑草研究. 46巻(別). 30-31 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] R. Tsuji, A. J. Fischer and Y. Yamasue: "Physiological and genetic studies on a multiple-herbicide resistant biotype of Echinochloa oryzicola Vasing., ; Rlatuionship between the resistant and susceptible biotypes by morphological and AFLP analyses"Weed Research (Japan). 46(supplement). 30-31 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 辻 綾一郎, A.J.Fischer, 山末 祐二: "タイヌビエの多剤抵抗性に関する生理遺伝学的研究-形態およびAFLP解析によるR, Sバイオタイプの類縁関係"雑草研究. 46巻(別). 30-31 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 辻綾一郎,A.J.Fischer,山末祐二: "タイヌビエの多剤抵抗性に関する生理遺伝学的研究-形態およびAFLP解析によるR,Sバイオタイプの類縁関係"雑草研究. 46巻別号(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yamasue,Y.: "Strategy of Echinochloa oryzicola for the survival in flooded rice"Weed Biology and Management. 1巻1号. 28-46 (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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