Correlation of Chlorophyll Meter Readings with Gas exchange and Chlorophyll Fluorescence in Flag Leaves of Rice (Oryza sativa L.) Plants(Crop Physiology & Ecology)

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概要

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• The objective of this study was to establish the correlation of the chlorophyll meter (SPAD) readings with the contents of chlorophyll (Chl) and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), the gross photosynthetic rate (P_G), and the maximum quantum yield of photosystem II (PSII) (F_v/F_m) in flag leaves of rice (Oryza sativa L.) in ripening stage. The SPAD readings significantly correlated with the Chl content, the Rubisco content, P_G, and F_v/F_m (R^2=0.848, 0.648, 0.671 and 0.712, respectively), which suggests that the SPAD meter has the potential to estimate the photosynthetic capacity of the flag leaves. However, both P_G and F_v/F_m had a stronger relationship with the Rubisco content than the SPAD readings, indicating that the PSII photochemical and CO_2 assimilation capacities are strongly influenced by the Rubisco content. Therefore, accurate calibration would be indispensable to obtain the physiological information from the SPAD readings of flag leaves.

• 日本作物学会の論文

著者

• 熊谷 悦史

  九州大学大学院生物資源環境科学府

• Araki Takuya

  Faculty of Agriculture,Kyushu University

• Kubota Fumitake

  Faculty of Agriculture,Kyushu University

• Araki Takuya

  Department Of Plant Resources Faculty Of Agriculture Kyushu University

• Araki Takuya

  Faculty Of Agriculture Kyushu University

• KUBOTA Fumitake

  Department of Plant Resources Faculty of Agriculture Kyushu University

• Kubota Fumitake

  Faculty Of Agriculture Kyushu University

• KUMAGAI Etsushi

  Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University

• Kumagai Etsushi

  Graduate School Of Bioresource And Bioenvironmental Sciences Kyushu University

• Araki Takuya

  Faculty Of Agriculture Ehime University

• Araki Takuya

  Faculty of Agriculture, Ehime University

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