アフリカイネ(Oryza glaberrima Steud.)・アジアイネ(O. sativa L.)種間交雑後代のブラベンダービスコグラム特性

  • 渡辺 英夫
    前西アフリカ稲開発協会West Africa Rice Development Association (WARDA) (株)パシフィック コンサルタンツ インターナショナル
  • 二口 浩一
    西アフリカ稲開発協会West Africa Rice Development Association (WARDA),
  • JONES Monty P.
    West Africa Rice Development Association (WARDA)
  • TESLIM Ibrahim
    West Africa Rice Development Association (WARDA)
  • SOBAMBO Benjamin A.
    West Africa Rice Development Association (WARDA)

書誌事項

タイトル別名
  • Brabender Viscogram Characteristics of Interspecific Progenies of Oryza glaberrima Steud and O. sativa L.
  • アフリカイネ Oryza glaberrima Steud アジアイネ O sativa L シュカン コウザツ コウダイ ノ ブラベンダービスコグラム トクセイ

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Fertile interspecific progenies from the cross of African rice (Oryza glaberrima) and Asian rice (O. sativa) were developed by WARDA. We evaluated their starch characteristics in comparison with African rice and Asian rice to disseminate them to West African farmers. The frequency distribution of amylose content in African rice had a higher average value and narrower range than those of Asian rice. Amylose content of the interspecifics was just 1.4% lower than that of African rice in average. However, its frequency distribution in the interspecifics widely ranged beyond the values of their parents, especially toward the direction for low amylose content. The frequency distribution of viscosity characteristics by Brabender viscogram (viscosity) in the interspecifics was different from that expected from their amylose content and it corresponded to stickier rice texture. The amylose content had much more dominant effects on viscosity than protein content. African rice had some factor making rice texture more rigid, whereas the interspecifics had another factor making it a little bit stickier. Such factors specified by rice species affected viscosity less than amylose content but more than protein content. Since protein content had small influence on viscosity and variation of viscosity in the interspecifics was quite large, it could be possible to select high protein lines with medium texture generally accepted by West African people from the existing interspecifics.

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