Effects of rhizobia inoculation and nitrogen fertilization on photosynthetic physiology of soybean

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DOIResolve DOI: http://doi.org/10.1007/s11099-006-0066-x
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TypeArticle
Journal titlePhotosynthetica
Volume44
Issue4
Pages530535; # of pages: 6
SubjectFluorescence; Nitrogen; physiology; Plants
AbstractPlant growth, contents of photosynthetic pigments, photosynthetic gas exchange, and chlorophyll (Ch1) fluorescence in soybean [Glycine max (L.) Merr. cv. Heinong37] were investigated after it was inoculated with Sinorhizobium fredii USDA191 or treated with 5 mM (NH4)(2)SO4 (N5) and 30 mM (NH4)(2)SO4 (N30), respectively. In the plants following N5 fertilization, not only plant biomass, leaf area, and Ch1 content, but also net photosynthetic rate (P-N), stomatal conductance (g(s)), carboxylation efficiency (CE), maximum photochemical efficiency (F-v/F-m) of photosystem 2 (PS2), and quantum yield of PS2 (Phi(PS2)) were markedly improved as compared with the control plants. There were also positive effects on plant growth and plant photosynthesis after rhizobia inoculation, but the effects were much less than those of N5 fertilization. For N30 plants there were no significant positive effects on plant growth and photosynthetic capacity. Plant biomass, P-N, and g(s) were similar to those of N-limited (control) plants. Phi(PS2) and photochemical quenching (q(p)) were obviously declined while content of carotenoids and non -photochemical quenching (q(N)) were significantly enhanced in N30 treated plants. This indicated that excess N supply may cause some negative effects on soybean plants
Publication date
LanguageEnglish
Note200705
Peer reviewedNo
NRC number472036
NPARC number3539962
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Record identifiere1b4fcdb-d85c-4169-82b3-1ad7bc25aa65
Record created2009-03-01
Record modified2016-05-09
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