potencial fisiológico de sementes de girassol influenciado pelo umedecimento artificial physiological potential of sunflower seeds as by the artificial moistening
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ID: 258761
2012
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Abstract
O objetivo do trabalho foi avaliar a qualidade fisiológica de sementes de girassol após a hidratação pelos métodos da atmosfera úmida e substrato úmido em temperaturas de 10 e 20°C visando a elevar o teor de água das sementes a 15, 20 e 25%. A qualidade fisiológica inicial e após o umedecimento das sementes foi determinada por testes de germinação e vigor (primeira contagem da germinação, germinação a baixa temperatura, emergência e índice de velocidade de emergência de plântulas em areia, massa de matéria seca e comprimento de plântulas). O método do substrato úmido a 10°C visando a aumentar o teor de água a 15 e 20% foi favorável em sementes de elevada qualidade, embora com redução do vigor das plântulas.
The objective of this study was to evaluate the sunflower seeds physiological quality after hydration by the moist atmosphere and moist substrate methods at temperatures of 10 and 20°C aiming to the water content of seeds at 15, 20 and 25%. The initial physiological quality and after the wetting of the seeds was determined by testing germination and vigor (first count of germination, germination at low temperature, emergence speed index and seedling emergence in sand, dry weight and length of seedlings). The method of moist substrate at 10°C to increase the water content at 15 and 20% was positive for moistening the seeds of high quality, although it has been observed small decrease seedling vigor.
The objective of this study was to evaluate the sunflower seeds physiological quality after hydration by the moist atmosphere and moist substrate methods at temperatures of 10 and 20°C aiming to the water content of seeds at 15, 20 and 25%. The initial physiological quality and after the wetting of the seeds was determined by testing germination and vigor (first count of germination, germination at low temperature, emergence speed index and seedling emergence in sand, dry weight and length of seedlings). The method of moist substrate at 10°C to increase the water content at 15 and 20% was positive for moistening the seeds of high quality, although it has been observed small decrease seedling vigor.
| Reference Key |
silva2012cinciapotencial
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|---|---|
| Authors | ;Ludmila Fonseca da Silva;Claudia Antonia Vieira Rossetto |
| Journal | Trials |
| Year | 2012 |
| DOI |
10.1590/S0103-84782012000700004
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