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de Sa D.A.C.,Campus Universitario Of Palmas | dos Santos G.R.,UFT | Furtado G.Q.,Federal University of Viçosa | Erasmo E.A.L.,UFT | do Nascimento I.R.,UFT
Revista Brasileira de Sementes | Year: 2011

The objective of the present study was to determine the transport rate of a fungus population associated with Jatropha curcas seeds and the pathogenicity of these microrganisms to seedlings and fruit and also the fruit-seed and seed-seedling transmissibility. The transport rate of seeds produced in Minas Gerais, São Paulo, Bahia and Tocantins states was evaluated using the blotter test. The seeds were submitted to the following treatments: without disinfestation, with tegument (SDCT), without disinfestation, without tegument (SDST), with disinfestation, with tegument (CDCT) and with disinfestations, without tegument (CDST). The incidence (%) of the fungi was assessed using a binocular stereomicroscope. Suspensions of 106 spores and PDA discs with mycelium were inoculated for the pathogenicity tests on seedlings and fruits, respectively. For the phytopathogenic fungi, the fruit-seed and seed-seedling transmissibility were evaluated. The SDCT treatment allowed the detection of a greater number of fungi. The identified fungi were Colletotrichum gloeosporioides, C. capsici, Curvularia sp., Verticillium sp., Fusarium sp., Penicillium sp., Aspergillus sp., A. Niger, Rhizopus sp. Only the Colletotrichum species is pathogenic to seedlings and fruit. For both species there is fruit-seed transmissibility but no seed-seedling transmission.

Barbosa V.D.S.,Campus Universitario Of Palmas | Peluzio J.M.,Federal University of Tocantins | Afferri F.S.,Federal University of Tocantins | de Siqueira G.B.,Federal University of Tocantins
Revista Ciencia Agronomica | Year: 2011

The sowing season is defined by a set of environmental factors that react with each other and interact with the plant, thus affecting variations in production and other agronomic traits. This work was carried out to evaluate the behavior of 21 cultivars of commercial soybean, during different times, looking forward to the production of biofuel. Were conducted five essays in the 2008/09 agricultural year, being two of them in Palmas-TO and three in Gurupi-TO. The sowing in Gurupi-TO was in 03/12/08, 18/12/2008 and 05/01/2009,and in Palmas in 30/11/2009 and 16/12/2009. The experimental design was a randomized blocks with 21 treatments and three repetitions. The treatments were constituted on the cultivars P98Y70, M-SOY 8766RR, M-SOY 9144RR, BR/Emgopa 314, P98R91, P98Y51, M-SOY 9988RR, P99R01, M-SOY 8867RR, M-SOY 9056RR, M-SOY 8527RR, M-SOY 8360RR, FT ESPERANÇA, FTS 4188, CM 07, CM 017, CM 136, CM 149, CM 102, NIDERA A 7002 and M-SOY 9350. The following characteristics, were evoluated production of grains, oil content of the grain and oil yield. Significant differences were detected among cultivars, sowing season and cultivate x sowing season for all characteristics. The first planting time in Palmas (30/11) and Gurupi (03/12), were the most favorable to the development of cultivars. There was positive and significant association between oil yield and production of grains (R = 0.97). Higher temperatures and rainfall precipitation averages, during the phase of stuffing of grains, favored the oil accumulation in the grains. NIDERA A 7002, MSOY 9144RR, BR/Emgopa 314, P98Y51 and FTS 4188 were the best cultivars for oil content of the grain and oil yield.

Pinheiro R.T.,Federal University of Tocantins | Pinheiro R.T.,Campus Universitario Of Palmas | Dornas T.,Federal University of Tocantins | Dornas T.,Campus Universitario Of Palmas | And 8 more authors.
Revista Brasileira de Ornitologia | Year: 2012

The Kaempfer's Woodpecker Celeus obrieni was discovered in the Uruçui region, state of Piauí, in 1926, and remained disappeared for 80 years. Data about its occurrence in the state of Goiás date as far back as the 1960's, but remained unknown until very recently. Based on its historical distribution and association with Guadua bamboo, we searched for new records of the Kaempfer's Woodpecker in the state of Goiás. We covered 24 municipalities and approximately 20,000 hectares and obtained fourteen new records of C. obrieni for the state of Goiás. Those new records provide a more accurate knowledge on the species' southern distribution limits in central Brazil, supporting its status as critically endangered due to high levels of destruction in the Cerrado.

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