Cultivares de trigo do Paraná: rendimento, características agronômicas e qualidade industrial.

Base experimental e metodologia utilizada; Rendimento de graos; Rendimento X epoca de semeadura; Peso do hectolitro (PH); Peso de mil sementes (PMS); Ciclo; Altura e acamamento; Doencas; Controle de doencas; Qualidade.bitstream/item/61157/1/Documentos-89.pd

Genetic control of seed dormancy and pre-harvest sprouting in wheat.

Pre-harvest sprouting (PHS) damage leads to occasional massive losses in all wheat producing areas, causing downgrading of grain quality, that severely limits' end-use applications and results in ;substantial financial losses to farmers and food processors. Red grain color is a traditional marker for,:resistance to sprouting in wheat breeding programs, however red-grained genotype alone does not always guarantee effective resistance. The objective of this work was to find genes for resistance to PHS and investigate its inheritance in Brazilian wheat cultivars. Genetic variation for dormancy was investigated in :the parents, F 1 and 300 F 2 lines derived from the cross Frontana x OR1 and its reciprocal. The germination/ dormancy sprouted grains was evaluated ,on fifty seeds per replication, germinated in paper towel rolls at woC for 5 days. A bimodal distribution for dormancy occurred in the Frontana/OR1 and OR1/Frontana ierived F 2 populations. The mean ratio of dormant and non-dormant seeds of the cross and its reciprocal was 85: 1115, fitting a digeAi~ model of 1: 15 (P < 0.05). In fact, all non after-ripened F 1 seeds germinated. The F2 distribution indicates that two major genes, here calledA,a andB,b, control seed dormancy, which ,It appears to be recessive to dormancy. Only the homozygous aabb is dormant. As expected, there was no . 'effect of maternal tIssues

Twenty six years of wheat breeding activities at IAPAR.

The description of the IAPAR wheat breeding program in its 26 th years of existence aims at presenting its major achievements giving an idea of the program size, breeding objectives and methodology. A germplasm flow chart will show the steps by which the populations have to follow starting either from crosses or from introductions until an advanced inbred line can be evaluated and elected as a new cultivar. A list of 23 wheat cultivars released by the program along with their pedigrees is presented as a special contribution. From the recent developed cultivars, data on grain yield, agronomic characteristics, technological quality and kernel properties are presented. The pedigree description for IAPAR 53 and the development of IPR 85 are presented in some detail. New biotechnological tools to help wheat breeding become more efficient are discussed

Cultivares de trigo do Parana: rendimento, caracteristicas agronomicas e qualidade industrial.

Base experimental e metodologia utilizada; Resultados; Rendimento de graos; Rendimento x epoca de semeadura; Peso do hectolitro(PH); Peso de mil semeadura(PMS); de doencas; Ciclo; Altura e acamamento; Doencas; Controle de doencas; Qualidade industrial.bitstream/CNPSO/16211/1/circTec18.pd

Desempenho agronomico e caracteristicas da cultivar de trigo BRS 49 no Estado do Parana.

A cultivar de trigo BRS 49, desenvolvida pela Embrapa Trigo, foi indicada para semeadura no Estado do Parana, a partir de 1999. Para a determinacao do seu valor de cultivo e uso, foram utilizados dados de 54 experimentos, instalados em nove locais das regioes 6, 7 e 8 do Parana, no periodo de 1996 a 1998. Apresenta como principais caracteristicas: ciclo intermediario, altura media a alta, moderada resistencia ao acamamento, tolerancia ao aluminio toxico no solo, moderada resistencia ao oidio (Blumeria graminis f. sp tritici) e a ferrugem da folha (Puccinia recondita f. sp. tritici), com percentuais de severidade em ensaios inferiores aos das testemunhas Trigo BR 23 e Trigo BR 35, suscetibilidade a giberela (Giberella zeae), cujas notas foram superiores as atribuidas as testemunhas, elevado potencial de rendimento e boa qualidade industrial. No trienio considerado, apresentou rendimento medio de 4.667 kg/ha na Regiao 6, 3.432 kg/ha, na Regiao 7, e 3.930 kg/ha, na regiao 8. Esses valores foram 11%, 11% e 28%, respectivamente, superiores a media das testemunhas (Trigo BR 2, Trigo BR 35 e CEP 24-Industrial). Os percentuais de resposta ao controle fitossanitario foram, em geral, inferiores aos observados nas referidas testemunhas, evidenciando o elevado potencial de rendimento da cultivar com aplicacoes reduzidas de fungicidas. A forca geral de gluten (W), na media de 14 amostras coletadas nas tres Regioes, foi de 260 e a relacao P/L foi de 0,685. Portanto, a cultivar se enquadra na classe Trigo Pao, de acordo com a Instrucao Normativa n.1, de 27 de janeiro de 1999 do MA. A cultivar apresenta caracteristicas de interesse agronomico, principalmente por possibilitar a obtencao de altos rendimentos, sem a necessidade de elevados investimentos com fungicidas.bitstream/CNPSO/17105/1/circTec25.pd

Características e desempenho agronômico da cultivar de trigo BRS 220 no estado de Santa Catarina.

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Cultivar de trigo BRS 208: produtividade, rusticidade e qualidade.

Desenvolvimento da cultivar; Caracteristicas botanicas e agronomicas; Caracteristcas botanicas; Caracteristicas agronomicas; Ciclo; Alta da planta (AP); Acamamento (Ac); Peso do hectolitro (PH); Reacao a doencas; Rendimento de graos; Resposta ao controle de doencas pela aplicacao; Densidade; Epoca de semeadura; Qualidade industrial.bitstream/CNPSO/2730/1/circtec31.pd

Cultivares de trigo da Embrapa no Paraná e seu manejo.

Descrição das cultivares: BRS 193; BRS 208; BRS 209; BRS 210; BRS220; BRS 229; BRS 248; BRS 249.bitstream/item/81798/1/Cultivares-de-trigo-da-Embrapa-no-Parana-e-seu-manejo.pd

Etravirine with 2 NRTIs: an effective switch option for ARV simplification and side effect management

Etravirine (ETV) has been approved for use in treatment-experienced patients based on results of the Duet clinical trials [1]. Less experience exists with ETV in earlier stages of treatment. ETV has a favorable genetic barrier, lipid profile, and little associated CNS toxicity. These characteristics make ETV attractive as a switch strategy for simplification and/or management of side effects. A retrospective chart review was conducted at a large urban HIV clinic in Toronto. All patients who were switched to ETV plus 2 nucleosides and whose viral load (VL) was &#60;200 copies/ml at the time of switch were included. Maintenance of viral suppression, CD4 and lipid changes at 24 weeks and reason for switch to ETV are reported. Seventy-three patients (67 male) were identified. Mean age was 46&#x00B1;10 and mean duration of HIV infection was 11.7&#x00B1;7.4 years. Switches were from efavirenz=29, atazanavir=23, lopinavir=16, other=5. Duration of prior regimen was long; median 195 weeks. CNS and GI intolerance were the most common reasons for switches. At the time of analysis, 63 patients had reached week 24. Three patients had discontinued ETV prior to week 24, 3 LTF/U, 4 had &#60;24 weeks follow-up. 92% (67/73) maintained VL suppression (ITT); failures were 6 patients who stopped/lost-to-follow-up prior to week 24. On treatment, CD4 increased and lipid decreased changes as seen below. All patients who switched due to CNS side effects had subjective improvement.Switch to ETV plus 2 nucleosides maintained viral suppression, improved lipid profiles and improved side effect profile in this selected group of patients. 48 week f/u will be presented