Qualidade fisiológica e tratamentos de sementes de cedrela fissilis procedentes do sul do Brasil Physiological quality seeds and treatments of cedrela fissilis seeds from south of Brazil
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Abstract
The objectives of this study were to evaluate the physiological quality of Cedrela fissilis seeds, from different origins, using different vigor tests and evaluating different seeds treatments for control of pathogens and to promote the germination of the species. Therefore, six samples from different places in states of Rio Grande do Sul, Santa Catarina and Paraná were used, which were subjected to determination of water content, germination and first count of germination, accelerated aging (testing different periods), emergence, with assessments seedlings and seed treatment. The treatments were the following: control (T0); physical treatment with dry heat at 70°C±3°C for 48 hours (T1); aqueous extract of Allium sativum (T2); biological with product based on Trichoderma spp. - Agrotich Plus® (T3); and chemic with fungicide Captan (T4). Germination ranged 56-87%, the period of 48 hours at a temperature of 41 ° C has been more efficient to stratify the samples at levels of vigor; emergence ranged 51-88% and the performance of seedlings variables were able to stratify the samples analyzed at levels of vigor. Regarding seed treatments, dry heat and treatment based on extracts of A. sativum are effective in controlling micro-organisms in C. fissilis seeds, without damage to the vigor of them.
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lazarotto2013qualidaderevista
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| Authors | Lazarotto, Marília;Muniz, Marlove Fátima Brião;Beltrame, Rafael;Santos, Alvaro Figueredo dos;Mezzomo, Ricardo;Piveta, Graziela;Blume, Elena; |
| Journal | revista Árvore |
| Year | 2013 |
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