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Utilization of F_1 weakness gene for breeding of rice varieties which prevent gene pollution

Research Project

Project/Area Number 62860001
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field Breeding science
Research InstitutionNational Institute of Genetics

Principal Investigator

OKINO Hiroko  Natl. Inst. of Genet., Dept. of Integrated Genet., Professor, 総合遺伝研究系, 教授 (70000247)

Co-Investigator(Kenkyū-buntansha) IKEDA Shigeru  Kagawa University, Dept. of Agric. Research associate, 農学部, 助手 (90151290)
HIRAOKA Yo-ichiro  Natl. Inst. of Genet. Dept. of Integrated Genet., Res. associate, 総合遺伝研究系, 助手 (20145113)
YONEZAWA Katsuei  Kyouto Sangyo Univ., Professor, 工学部, 教授
KURODA Kisawo  Nara Agric. Expt. Station, Director, 場長
INAMURA Tatsuya  Nara Agric. Expt. Station, Researcher
稲村 達也  奈良県農業試験場, 技師
米澤 勝衛  京都産業大学, 工学部, 教授 (60190774)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1988: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1987: ¥3,200,000 (Direct Cost: ¥3,200,000)
KeywordsHybrid weakness / Complementary genes / Red rice / Gene pollution / Varietal detardation / Weediness / Computer simulation / 遺伝子汚染の拡散 / 補足弱勢遺伝子 / 雑草イネ
Research Abstract

Recently, rice varieties having particular characteristics of color, fragrance, etc. awaken the interests of breeders to meet various needs other than staple food. Those traits, however, lower the grain quality when mixed with ordinary rice, and moreover those particular varieties often show "weedy" habit. The present project aimed at practical breeding of a red-rice variety which is good for coloring agent of alcohol but does not cause genetic contamination of ordinary rice fields.
1) A number of red-rice varieties were evaluated regarding agronomic as well as chemical traits, and two were selected for breeding program. 2) A genetic system to cause inviability or weakness of F_1 hybrid was experted to work when ordinary rice plants arg naturally crossed with red rice. Since most Japanese cultivars carry one of the complementary F_1 weakness genes Hwc-2, introduction of another gene Hwc-1 into a selected red-rice variety "Soja" was carried out by backcrossing. 3) Monte Carlo computer simulation showed that this genetic system is effective for gene contamination through pollens, but not for gene contamination through seeds or plants. 4) In an attempt to discriminate pollens derived from different varieties in a pollen competition study, antibodies was obtained which have affinity to pollen polypeptides specific to red-rice "Soja". 5) Red-rice varieties are not necessarily weedy. F_2 study and selection experiment, however, indicated that weedy red rice could be segregated in the hybrid progeny between red and white non-weedy types, because two genes for red grain color are linked with two shattering genes, respectively, which work in a complementary manner.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 稲村達也: "光学特性からみた赤米の赤酒醸造特性" 近畿作育研究. 33. 28-30 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] SATO,Y.I.: "Studies on the distribution of complementary genes causing F1 weakness in common rice and its wild relatives,I." Euphytica. 36. 425-431 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 佐藤洋一郎: "イネにおける自然交配による遺伝子汚染の拡散および品種の退化を防止する試み" 育種学雑誌. 39. 389-394 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] YONEZAWA,K.: "Computer simulated evaluation of the hybrid weakness gene system as a means to prevent genetic contamination of rice cultivars." Plant Breeding. 104. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Tang,L.H.: "Inheritance of shedding habit in weed rice." Rice Genetics Newsletter. 6. 72-73 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Inamura, T. & K. Kuroda: "Red-rice varieties for brewing "akazake" evaluated from their optical features." Kinki J. of Crop Science. 33. 28-30 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Sato, Y.I. & H. Morishima: "Studies on the distribution of complementary genes causing F_1 weakness in common rice and its wild relatives, I." Euphytica. 36. 425-431 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Sato, Y. I. & T. Inamura: "An attempt for preventing of spreading gene pollution by natural hybrid in rice." Japan J. Breed.39. 389-394 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yonezawa, K., Y. I. Sato, T. Nomura & H. Morishima: "Computer simulated evaluation of the hybrid weakness gene system as a means to prevent genetic contamination" Plant Breeding. 104. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Tang, L.H. & H. Morishima: "Inheritance of shedding habit in weed rice" Rice Genetics Newsletter. 6. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 佐藤洋一郎: "イネにおける自然交配による遺伝子汚染の拡散および品種の退化を防止する試み" 育種学雑誌. 39. 389-394 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yonezawa,K.et al: "Computer simulated evaluation of the hybrid weakness gene system as a means to prevent genetic contamination of rice cultivars." Plant Breeding. 104. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Tany,L.H.: "Inheritance of shedding habit in weed rice" Rice Genetics Neweletter. 6. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 稲村達也: "光学特性からみた赤米の赤酒醸造特性" 近畿作育研究. 33. 28-30 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] TANG,L.H.: Rice Genetics News Letter. 5. 70-72 (1988)

    • Related Report
      1988 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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