Blog
About

7
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Competitividade de cultivares de arroz irrigado com cultivar simuladora de arroz-vermelho Translated title: Competitiveness of flooded rice cultivars with a red rice simulating cultivar

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Características morfológicas e fisiológicas de plantas cultivadas podem afetar sua habilidade competitiva com plantas daninhas. Este trabalho objetivou investigar a competitividade de cultivares de arroz irrigado (Oryza sativa L.) com cultivar simuladora de arroz-vermelho. Investigou-se na safra 2000/2001 o comportamento de oito genótipos de arroz, cultivados na presença ou ausência da cultivar de arroz EEA 406, que simulou infestação de arroz-vermelho. Aos 45 e aos 60 dias após a semeadura, avaliou-se a resposta da simuladora em relação às cultivares de arroz. Na colheita, foram determinados estatura de planta, componentes do rendimento e produtividade das plantas. A cultivar tardia IR 841 suprimiu o crescimento da simuladora, apresentando com a cultivar superprecoce Ligeirinho as menores reduções de produtividade quando em competição. Por sua vez, as cultivares IAS 12-9 Formosa e Bluebelle permitiram maior crescimento e produção de sementes pela concorrente, também sofrendo as maiores reduções de produtividade de grãos na condição de competição.

          Translated abstract

          Morphologic and physiologic characteristics of crop plants can affect their competitive ability with weeds. This research aimed to investigate competitiveness of flooded rice (Oryza sativa L.) cultivars with a red rice simulating genotype. It was investigated, during the 2000/2001 warm season, the behavior of eight rice genotypes, grown in presence or absence of the rice cultivar EEA 406, simulating a red rice infestation. At 45 and 60 days after rice seeding, it was evaluated the response of red rice mimicker genotype in relation to rice cultivars. At harvest, it was determined plant height, yield components, and grain yield of the cultivars. The late season genotype IR 841 suppressed growth of the simulative cultivar, presenting, together with the veryearly cultivar Ligeirinho, the lowest reductions in grain yield under competition. In opposite, IAS 12-9 Formosa and Bluebelle cultivars allowed the greatest growth and seed production by the concurrent rice, also presenting the largest decreases of grain yield under the competition condition.

          Related collections

          Most cited references 22

          • Record: found
          • Abstract: not found
          • Article: not found

          Arroz irrigado: recomendações técnicas de pesquisa para o Sul do Brasil

          (2012)
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Breaking the yield frontier of rice

             Gurdev Khush (1995)
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Differential Weed Suppression Ability in Upland Rice Cultivars

                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                pab
                Pesquisa Agropecuária Brasileira
                Pesq. agropec. bras.
                Embrapa Informação Tecnológica (Brasília )
                1678-3921
                January 2003
                : 38
                : 1
                : 53-59
                Affiliations
                [1 ] Universidade Federal do Rio Grande do Sul Brazil
                [2 ] Universidade Federal do Rio Grande do Sul Brazil
                [3 ] Instituto Rio-Grandense do Arroz
                Article
                S0100-204X2003000100007
                10.1590/S0100-204X2003000100007

                http://creativecommons.org/licenses/by/4.0/

                Product
                Product Information: website
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                AGRICULTURE, MULTIDISCIPLINARY

                Comments

                Comment on this article