Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129848
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dc.contributor.authorBALDESSARINI, R.
dc.contributor.authorGALON, L
dc.contributor.authorVARGAS, L.
dc.contributor.authorMÜLLER, C.
dc.contributor.authorBRANDLER, D.
dc.contributor.authorSILVA, J. D. G. DA
dc.contributor.authorFORTE, C. T.
dc.contributor.authorFRANCESCHETTI, M. B.
dc.contributor.authorTIRONI, S. P.
dc.contributor.authorPERIN, GISMAEL FRANCISCO
dc.date.accessioned2021-02-08T14:19:07Z-
dc.date.available2021-02-08T14:19:07Z-
dc.date.created2021-02-08
dc.date.issued2020
dc.identifier.citationJournal Of Agricultural Studies, v. 8, p . 546-568, 2020.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1129848-
dc.descriptionWheat crop growth and development can be affected by weed infestation, especially ryegrass. Thus, the objective of this study was to evaluate the competitive ability of wheat cultivars wit h the diploid and tetraploid ryegrass biotypes. Greenhouse experiments were conducted in a completely randomized design with four replications. BRS Parrudo and TBIO Sinuelo wheat cultivars and the competitors ryegrass diploid and tetraploid were used. The population of each species was defined and then the replacement series experiments were carried out, containing the following proportions of wheat and ryegrass plants: 100:0, 75:25, 50:50, 25:75; and 0:100%, equivalent to 32:0; 24:8; 16:16; 8:24; and 0:32 plants per pot. Fifty days after species emergence, physiological traits, such as photosynthetic activity ( A ), stomatal conductance ( g S ), transpiration rate E ), internal concentration of mesophyll CO 2 (C i ), water use efficiency (WUE), and carboxylation ef ficiency (CE), were evaluated, along with the morphological traits of leaf area (LA), stem diameter (SD), number of tillers (NT), and shoot dry mass (DM). Competitiveness analysis was performed by means of diagrams applied to substitutive experiments using relative competitiveness indices. The ryegrass, both diploid and tetraploid, had a negative effect on the variables related to A , WUE and also those associated with plant growth. The ryegrass negatively changed the LA, DM, SD, and NT of the cultivars BRS Parrudo and TBIO Sinuelo, which demonstrates competition between the cultivars of wheat and the weed ryegrass with mutual damage to the species involved in th recommended for wheat cultivation.
dc.language.isopor
dc.rightsopenAccesspt_BR
dc.subjectCompetitive interaction
dc.titleMorphophysiological responses of wheat cultivars in competition with diploid and tetraploid ryegrass.
dc.typeArtigo de periódico
dc.subject.thesagroTriticum Aestivum
dc.subject.thesagroLolium Multiflorum
riaa.ainfo.id1129848
riaa.ainfo.lastupdate2021-02-08
dc.contributor.institutionRENATA BALDESSARINI, Laboratory of Sustainable Management of Agricultural Systems, Federal University of Fronteira Sul, Erechim Campus; LEANDRO GALON, Laboratory of Sustainable Management of Agricultural Systems, Federal University of Fronteira Sul, Erechim Campus; LEANDRO VARGAS, CNPT; CAROLINE MÜLLER, Laborato ry of Sustainable Management of Agricultural Systems, Federal University of Fronteira Sul, Erechim Campus; DAIANE BRANDLER, Laborato ry of Sustainable Management of Agricultural Systems, Federal University of Fronteira Sul, Erechim Campus; JESSICA DIAS GOMES DA SILVA, Laboratory of Sustainable Management of Agricultural Systems, Fe deral University of Fronteira Sul, Erechim Campus; CÉSAR TIAGO FORTE, Department of Agronomy, Federal University of Santa Maria Av Roraima, n 1000, 97.105 900, Sa nta Maria, RS, Brazil; MILENA BARRETTA FRANCESCHETTI, Laboratory of Sustainable Management of Agricultural Systems, Federal University of Fronteira Sul, Erechim Campus; SIUMAR PEDRO TIRONI, Laboratory of Seeds and Grains, Federal University of Fronteira Sul, Chapecó Campus SC 484 km 02, 89.815 899, Chapecó, SC, Brazil.; GISMAEL FRANCISCO PERIN, Labor atory of Sustainable Management of Agricultural Systems, Federal University of Fronteira Sul, Erechim Campus.
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