Evaluation of genotypic variation in leaf photosynthetic rate and its associated factors by using rice diversity research set of germplasm

Tomomi Kanemura, Koki Homma, Akihiro Ohsumi, Tatsuhiko Shiraiwa, Takeshi Horie

研究成果: Article査読

39 被引用数 (Scopus)

抄録

In order to evaluate genotypic variation, we measured leaf photosynthetic rate (Pn) and its associated factors for the rice diversity research set of germplasm (RDRS) selected from the Genebank in National Institute of Agrobiological Sciences (NIAS). Pn showed large genotypic variation from 11.9 to 32.1 μmol m-2 s-1. The variation in stomatal conductance to CO2 (Gs) explained about 50% of that in Pn, while that in nitrogen concentration (N) in leaves explained about 35%. The genotype group which mainly consists of aus type indica tended to have higher Gs, and the genotype group which corresponds to japonica had a higher nitrogen concentration (N) in leaves. The relationships of Pn with G s and N were not significantly different among genotype groups, suggesting photosynthetic efficiencies are similar among genotype groups.

本文言語English
ページ(範囲)23-30
ページ数8
ジャーナルPhotosynthesis Research
94
1
DOI
出版ステータスPublished - 2007 10
外部発表はい

ASJC Scopus subject areas

  • 生化学
  • 植物科学
  • 細胞生物学

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