Seed vigor of Piptadenia moniliformis Benth. subjected to thermal stress
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Universidade Estadual de Maringá
2020
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| _version_ | 1876447173547130880 |
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| author | Joyce Naiara da Silva |
| author_facet | Joyce Naiara da Silva |
| contents | Seed vigor of Piptadenia moniliformis Benth. subjected to thermal stress Joyce Naiara da Silva Monalisa Alves Diniz da Silva Biología germination Deterioration forest species accelerated aging The objective of this work is to evaluate the influence of accelerated aging test at 41ºC on the germination and seed vigor of Piptadenia moniliformis Benth. Two experiments were conducted. Experiment 1: seeds were submitted to dormancy overcoming treatments. They were immersed into sulfuric acid for 0 (intact seeds), 5, 10, 15, 20 and 25 minutes. Experiment 2: two methods were evaluated for the accelerated aging test at 41ºC, that is, the traditional method and the saturated NaCl solution method with exposure periods of 0, 24, 48, 72 and 96 hours. After each treatment, the seeds were subjected to electrical conductivity and germination tests. Seeds overcame their dormancy when immersed into concentrated sulfuric acid for 5, 10, 15, 20 or 25 minutes, but the germination was faster when immersed for 20 minutes. The different methods for the accelerated aging test, decreased the germination potential and seed vigor of P. moniliformis after 24 hours of exposure. Regarding the method used, the saturated solution provided, in general, the best results since the seed water content was lower, thus reducing the proliferation of fungi. The electrical conductivity test showed that, by increasing the aging period regardless of the method, there is an increase in seed deterioration, corroborating with germination results, which showed that the correlation was moderate and negative and indicated that the higher the conductivity, the lower the percentage and the germination speed index. The immersion of seeds of P. moniliformis into concentrated sulfuric acid for 20 minutes provides a fast and increased germination. The methods for accelerated aging at 41ºC, traditional and saturated solution, can be used as vigor tests to evaluate the physiological quality of seeds. 2020 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187163790039 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Vol.42 |
| format | Artículo científico |
| id | redalyc_187163790039 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Seed vigor of Piptadenia moniliformis Benth. subjected to thermal stress Joyce Naiara da Silva Biología germination Deterioration forest species accelerated aging Seed vigor of Piptadenia moniliformis Benth. subjected to thermal stress Joyce Naiara da Silva Monalisa Alves Diniz da Silva Biología germination Deterioration forest species accelerated aging The objective of this work is to evaluate the influence of accelerated aging test at 41ºC on the germination and seed vigor of Piptadenia moniliformis Benth. Two experiments were conducted. Experiment 1: seeds were submitted to dormancy overcoming treatments. They were immersed into sulfuric acid for 0 (intact seeds), 5, 10, 15, 20 and 25 minutes. Experiment 2: two methods were evaluated for the accelerated aging test at 41ºC, that is, the traditional method and the saturated NaCl solution method with exposure periods of 0, 24, 48, 72 and 96 hours. After each treatment, the seeds were subjected to electrical conductivity and germination tests. Seeds overcame their dormancy when immersed into concentrated sulfuric acid for 5, 10, 15, 20 or 25 minutes, but the germination was faster when immersed for 20 minutes. The different methods for the accelerated aging test, decreased the germination potential and seed vigor of P. moniliformis after 24 hours of exposure. Regarding the method used, the saturated solution provided, in general, the best results since the seed water content was lower, thus reducing the proliferation of fungi. The electrical conductivity test showed that, by increasing the aging period regardless of the method, there is an increase in seed deterioration, corroborating with germination results, which showed that the correlation was moderate and negative and indicated that the higher the conductivity, the lower the percentage and the germination speed index. The immersion of seeds of P. moniliformis into concentrated sulfuric acid for 20 minutes provides a fast and increased germination. The methods for accelerated aging at 41ºC, traditional and saturated solution, can be used as vigor tests to evaluate the physiological quality of seeds. 2020 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187163790039 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Vol.42 |
| title | Seed vigor of Piptadenia moniliformis Benth. subjected to thermal stress |
| topic | Biología germination Deterioration forest species accelerated aging |
| url | https://www.redalyc.org/articulo.oa?id=187163790039 |