Seed quality response of Urochloa humidicola cv. Llanero to drying surfaces and environments1
| Autor: | Everton Vinicius Zambiazzi, Joacir Mario Zuffo Júnior, Alan Mario Zuffo, Fábio Steiner |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
seed sanity
0402 animal and dairy science Brachiaria humidicola food and beverages 04 agricultural and veterinary sciences Biology 040201 dairy & animal science Urochloa humidicola Forage grass Horticulture Germination 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science Water content Completely randomized design seed pathogens |
| Zdroj: | Pesquisa Agropecuária Tropical v.48 n.3 2018 Pesquisa Agropecuária Tropical Universidade Federal de Goiás (UFG) instacron:UFG |
| Popis: | The drying process and storage may interfere in the quality of creeping signalgrass seeds [Urochloa humidicola (Rendle.) Morrone & Zuloago, syn. Brachiaria humidicola (Rendle.) Schweick.]. This study aimed to evaluate the physical, physiological and sanitary quality of creeping signalgrass cv. Llanero seeds submitted to drying surfaces and environments and stored for two periods (1 and 8 months). The experiment was arranged in a completely randomized design, in a 4 × 2 × 2 + 2 factorial arrangement, with four drying surfaces (soil, asphalt, concrete and ceramic floor), two drying environments (seeds exposed to the sun or shade), two seed storage periods (1 and 8 months) and two additional treatments with drying in paper bags under laboratory conditions (control) and stored for 1 or 8 months, with four replicates. The water content, viability by the tetrazolium test, electrical conductivity, germination rate, germination rate index and seed sanitary quality were measured. Drying at full sun impaired the physiological quality of the seeds due to the high temperatures (46.8-51.0 ºC) of the drying surface; however, reduced the incidence of pathogens. The drying of seeds in paper bags under shade results in a higher physiological quality, but the sanitary quality is compromised. However, the pathogens present in the seeds did not inhibit their viability and vigor. The storage for eight months reduces the seed quality. |
| Databáze: | OpenAIRE |
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