TY - JOUR
T1 - Evaluation of genotypic variation in leaf photosynthetic rate and its associated factors by using rice diversity research set of germplasm
AU - Kanemura, Tomomi
AU - Homma, Koki
AU - Ohsumi, Akihiro
AU - Shiraiwa, Tatsuhiko
AU - Horie, Takeshi
PY - 2007/10
Y1 - 2007/10
N2 - 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.
AB - 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.
KW - C/C: gas conductance
KW - Carbon isotope discrimination
KW - Genotype groups
KW - Indica
KW - Japonica
KW - Nitrogen concentration
KW - Oryza sativa L.
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U2 - 10.1007/s11120-007-9208-7
DO - 10.1007/s11120-007-9208-7
M3 - Article
C2 - 17659450
AN - SCOPUS:34548171767
SN - 0166-8595
VL - 94
SP - 23
EP - 30
JO - Photosynthesis Research
JF - Photosynthesis Research
IS - 1
ER -