Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/907160
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dc.contributor.authorDIAS-FILHO, M. B.pt_BR
dc.contributor.authorWISE, J. A.pt_BR
dc.contributor.authorDAWSON, T. E.pt_BR
dc.date.accessioned2011-11-24T11:11:11Zpt_BR
dc.date.available2011-11-24T11:11:11Zpt_BR
dc.date.created2011-11-24pt_BR
dc.date.issued1995pt_BR
dc.identifier.citationPesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 3, p. 319-325, mar. 1995.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/907160pt_BR
dc.descriptionThe gas exchange behavior or two perennial weed species, a vine Ipomoea asarifolia (Desr.) Roem. & Schultz and a shrub Stachytarpheta cayennensis (L.C. Rich) Vahl., both common in the Brazilian Amazonia, was compared for plants grown under well watered and water limited conditions. Under well-watered conditions, light saturated rates of photosynthesis (A) and stomatal conductance (g) in I. asarifolia were, respectively, 15 and 83% higher than in S. cayennensis. When water stress was imposed, A and g in I. asarifolia declined, respectively, by 29 and 57% in relation to S. cayennensis. Dark respiration and light compensation point were similar on well-watered plants. Under water limited conditions, S. cayennensis had 60% higher dark respiration and 35% higherlight compensation point than I. asarifolia. The observed responses are in accord with the known distribution of the species in the field and may provide important information for designing differential management strategies for controlling these weeds.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAmazonpt_BR
dc.subjectIpomoea asarifoliapt_BR
dc.subjectTropical pasturept_BR
dc.titleIrradiance and water deficit effects on gas exchange behavior of two C3 Amazonian weeds.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2011-11-24T11:11:11Zpt_BR
dc.subject.thesagroStachytarpheta Cayennensispt_BR
dc.subject.nalthesaurusphotosynthesispt_BR
dc.subject.nalthesaurusstomatal conductancept_BR
dc.subject.nalthesauruswater stresspt_BR
riaa.ainfo.id907160pt_BR
riaa.ainfo.lastupdate2011-11-24pt_BR
dc.contributor.institutionMOACYR BERNARDINO DIAS FILHO, CPATU; JAMES A. WISE, CORNELL UNIVERSITY; TODD E. DAWSON, CORNELL UNIVERSITY.pt_BR
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