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Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:53:21Z No. of bitstreams: 1 S0101-31222002000200016.pdf: 32375 bytes, checksum: d8034e721d0aff0010195b31475157b4 (MD5) Made available in DSpace on 2013-08-22T18:53:21Z (GMT). No. of bitstreams: 1 S0101-31222002000200016.pdf: 32375 bytes, checksum: d8034e721d0aff0010195b31475157b4 (MD5) Previous issue date: 2002-01-01 Made available in DSpace on 2013-09-30T17:47:34Z (GMT). No. of bitstreams: 2 S0101-31222002000200016.pdf: 32375 bytes, checksum: d8034e721d0aff0010195b31475157b4 (MD5) S0101-31222002000200016.pdf.txt: 27763 bytes, checksum: 880a32729f3b990afb2cce985a6a1abe (MD5) Previous issue date: 2002-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:20:59Z No. of bitstreams: 2 S0101-31222002000200016.pdf: 32375 bytes, checksum: d8034e721d0aff0010195b31475157b4 (MD5) S0101-31222002000200016.pdf.txt: 27763 bytes, checksum: 880a32729f3b990afb2cce985a6a1abe (MD5) Made available in DSpace on 2014-05-20T13:20:59Z (GMT). No. of bitstreams: 2 S0101-31222002000200016.pdf: 32375 bytes, checksum: d8034e721d0aff0010195b31475157b4 (MD5) S0101-31222002000200016.pdf.txt: 27763 bytes, checksum: 880a32729f3b990afb2cce985a6a1abe (MD5) Previous issue date: 2002-01-01 Os testes de vigor e o teste de germinação são componentes essenciais no controle de qualidade das empresas de produção de sementes. Com o objetivo de verificar a eficiência de diferentes testes de vigor e de variações de suas metodologias na avaliação da qualidade de sementes de couve-brócolos visando diferenciação de lotes e previsão de emergência em bandeja, cinco lotes de sementes do híbrido Flórida foram submetidos aos seguintes testes: germinação; primeira contagem de germinação; emissão de raiz primária (após 48, 56, 72, 80 e 96 h após a instalação do teste de germinação); emergência de plântulas em substrato; envelhecimento acelerado com água (1g de sementes mantidas a 41ºC por 48 e 72 h a 100%UR); envelhecimento acelerado com solução saturada de sal (mesmo procedimento do item anterior, porém usando solução de NaCl, 40% e 76%UR); condutividade elétrica (50 sementes em 25 mL de água destilada a 25ºC e leituras após 2, 4, 6, 8 e 24 h). Todos os testes apresentaram correlação significativa com a porcentagem de emergência de plântulas em substrato, a 1% de probabilidade. Os testes de envelhecimento acelerado com solução saturada de sal por 48 h e de condutividade elétrica após 8 e 24 h de embebição foram eficientes e tiveram resultados semelhantes aos da emergência em substrato. Os testes da primeira contagem de germinação, emissão da raiz primária após 56 h e envelhecimento acelerado com solução saturada de sal por 72 h, apresentaram-se mais eficientes que a emergência de plântulas em substrato na diferenciação do vigor dos lotes. The vigor tests and germination test are essential components of seed quality control to the seed industry. This research was understaken to study an adequate method to estimate vigor in different seed lots and to predict seedling emergence on spedling trays. Five lots of broccoli `Florida' hybrid seeds were submitted to the following tests: germination; first germination count; primary root emission (48, 56, 72, 80, and 96 hour after sowing); seedling emergence on spedling trays; accelerated aging with water (1 g of seeds maintained at 41ºC during 48 and 72 hours); accelerated aging with salt (the same procedure of last item, but using 40% NaCl solution); electrical conductivity (50 seeds in 25 mL of distilled water at 25 ºC and evaluations after 2, 4, 6, 8, and 24 hours imbibition). All the tests presented significant correlation with emergence on spedling trays at 1% probability level. The accelerated aging tests with saturated salt solution during 48 hours and the electrical conductivity after 8 and 24 hours imbibitions showed similar results at emergence on spedling trays. The first germination count, primary root emission after 56 hours and accelerated aging with salt during 72 hours were more efficient than emergence on spedling trays to differentiate vigor among seed lots. UNESP FCA Depto. Produção Vegetal Faculdades Integradas Espírita UNESP Faculdade de Ciências Agronômicas Depto. de Produção Vegetal UNESP FCA Depto. Produção Vegetal UNESP Faculdade de Ciências Agronômicas Depto. de Produção Vegetal

Made available in DSpace on 2013-08-12T17:59:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Made available in DSpace on 2013-09-30T18:13:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:30:41Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T13:30:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Physiological quality of rice seeds may be influenced by water deficiency at seed development and filling stages, which is often reported in upland cropping system. This study had the objective of evaluating the effects of sprinkler irrigation system on the improvement of physiological quality of rice seeds produced under upland conditions. Two experiments were carried out in Selviria-MS, Brazil, Ilha Solteira College of Engineering, UNESP, in 1994/1995 and 1995/1996, with the upland rice cultivars 'IAC 201' and 'Carajas'. In both years, rice plants were grown under rainfed and sprinkler-irrigation conditions. Based on the rice crop coefficient (Kc), the following water levels were obtained: L1: 0.5 times the Kc, L2: Kc, L3: 1.5 times the Kc, L4: Kc = 1.95. Weight, germination and vigor of rice seeds were evaluated right after harvest. The experimental design was the completely randomized with four replications. Data was submitted to analysis of variance and means were compared by Tukey's test (P