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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Produtividade de arroz híbrido em função da contaminação genética e densidade de semeadura / Hybrid rice yield as related to genetic contamination and sowing density

Oliveira, Carlos Gustavo Karam de 23 December 2010 (has links)
Made available in DSpace on 2014-08-20T13:44:49Z (GMT). No. of bitstreams: 1 dissertacao_carlos_gustavo_karam_de_oliveira.pdf: 610763 bytes, checksum: 9340a1e45ba1104633287693f7fb392a (MD5) Previous issue date: 2010-12-23 / The objective this research is to determine the relation between the levels of genetic contamination (Female), density of sowing and hybrid types of irrigated rice to productivity. The experiment was carried out at an experiment camp of the Rice Tec Company, in the city of Glorinha (RS/BRAZIL), in the agricultural year of 2009/2010. The variables were four genetic contaminations (0%, 10%, 20% and 30%) three seed rate (35, 45 and 55 kilograms/hectare) and two hybrids (Avaxi CL and Inov), while the variable of result was yield. For the Avaxi CL there was no difference concerning productivity when the genetic contamination was increased. On the Other hand, the Inov hybrid showed the important yield difference in when the genetic contamination was increased and with different sowing densities. / O presente trabalho teve como objetivo determinar a influência de níveis de contaminação genética (Fêmea), densidade de semeadura e tipos de híbridos de arroz irrigado com a produtividade. O experimento foi conduzido no campo experimental da empresa RiceTec no município de Glorinha, RS no ano agrícola de 2009/2010. As variáveis foram quatro contaminações genéticas (0%; 10%; 20% e 30%), três densidades de semeadura (35; 45 e 55 kg/ha) e dois híbridos (Avaxi CL e Inov), enquanto a variável resposta foi rendimento por hectare. No híbrido Avaxi CL não houve diferença em relação à produtividade quando se aumentou a contaminação genética. Por outro lado, o híbrido Inov apresentou diferença significativa na produtividade quando do aumento da contaminação genética e nas diferentes densidades de semeadura

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