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| Machado,Fernando H. B.; David,Andréia M. S. de S.; Cangussú,Lucas V. S.; Figueiredo,Josiane C.; Amaro,Hugo T. R.. |
| ABSTRACT Water stress is a condition that causes physiological changes in different species and even genotypes of the same species. One of the osmotic agents most used to simulate this condition is polyethylene glycol 6000. The aim of this study was to evaluate the effects of water stress on the physiological quality of seeds and performance of seedlings of crambe genotypes. A completely randomized design was used, in a factorial scheme with two genotypes (one cultivar and one line) and five osmotic potentials simulated with aqueous solutions of polyethylene glycol 6000 (control = 0, -0.25, -0.50, -1.0, -1.50 MPa), with four replicates of 50 seeds per treatment. The effects of the treatments were evaluated by means of germination, first count, germination... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crambe abyssinica Hoechst; Germination; Polyethylene glycol. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300175 |
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| Cangussú,Lucas V. de S.; David,Andréia M. S. de S.; Araújo,Eduardo F.; Alves,Rayane A.; Nunes,Rebeca A.; Amaro,Hugo T. R.. |
| ABSTRACT Early harvest may decrease seed exposure in the field after physiological maturation. The objective of this study was to evaluate the effect of glyphosate desiccant at different plant desiccation times at pre-harvest on the physiological quality of crambe (Crambe abyssinica Hochst) seeds. The experimental design was completely randomized in a 2 x 4 factorial scheme, involving the application of glyphosate desiccant in the plants at pre-harvest and the control (without plant desiccation) and four desiccation times, with three replicates per treatment. The desiccation of crambe plants at pre-harvest with glyphosate was efficient, positively affecting seed germination and vigor. Application of the desiccant in the plants, with 90% of brown seeds, at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crambe abyssinica; Brassicaceae; Maturation; Herbicide; Germination. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000800577 |
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| Alkimim,Emilly R.; David,Andréia M. S. de S.; Sousa,Tiago V.; Rodrigues,Cleiton G.; Amaro,Hugo T. R.. |
| ABSTRACT The season of harvest is one of the most important factors influencing seed quality. This study evaluated the effect of different harvesting times on the physiological quality of Coriandrum sativum L. seeds, cv. Palmeira. The experimental design was completely randomized, with six treatments (harvest times) and four replications. The experiment was conducted during the months of April to October 2010. The first moment to harvest seeds was carried out 15 days after full bloom, when approximately 50% of plants were in flowering phase. Other harvests (22, 29, 36, 43 and, 50 days after bloom) were carried out at 7 days intervals until the seeds reached 16.0% of moisture, which occurred in the 6th harvest. Immediately after each harvest, the seeds were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coriandrum sativum L.; Germination; Vigor; Water content. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000200133 |
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