Processing and physical and physiological quality of the native forest seeds of Vernonanthura discolor

• Published in: Acta scientiarum. Agronomy Vol. 41; no. 1; pp. 39574 - e39574
• Main Authors: Grzybowski, Camila Ribeiro de Souza, da Silva, Rosemeire Carvalho, Vieira, Elisa Serra Negra, Panobianco, Maristela
• Format: Journal Article
• Language: English
• Published: Maringa Universidade Estadual de Maringa 01-01-2019; Editora da Universidade Estadual de Maringá - EDUEM; Eduem (Editora da Universidade Estadual de Maringá)
• Subjects: AGRONOMY; Automobile safety; Calibration; Discoloration; Germination; Moisture content; Physiology; post-harvest; Purity; purity analysis; Rubbing; Seeds; seeds blower; Sieves; Vassourão-preto; Water content; Weight; weight of one thousand seeds; germination; seeds blower; Vassourão-preto; weight of one thousand seeds; purity analysis; post-harvest
• ISSN: 1679-9275; 1807-8621; 1807-8621
• DOI: 10.4025/actasciagron.v41i1.39574

The objective was to study the processing of Vernonanthura discolor seeds, evaluating their physical and physiological qualities and defining parameters for purity analysis and determine the weight of one thousand seeds. The seeds extracted from the infructescences were processed in a blower, testing combinations of openings of the calibration valve and the side air passage. After processing, the seeds went through water content determination, germination tests, first count of the germination test, purity analysis, weight of one thousand seeds and percentage of full seeds. Compared to the control, seeds processed in a regulated blower with the calibrator valve in position 10 plus three 360[degrees] turns of side air passage obtained an approximately three-fold increase in germination and vigour and had 96% purity. We conclude that the processing of V. discolor seeds was best done by combining the rubbing of the seeds on circular sieves (1.8 and 1.6 mm in diameter) and then passage in an adjusted seed blower (calibration valve in position 10 plus three 360[degrees] turns of side air passage). The weight of one thousand seeds is 0.500 g, and the working sample for purity analysis must be 1.3 g.Keywords: Vassourao-preto; post-harvest; purity analysis; weight of one thousand seeds; seeds blower; germination.Received on September 19, 2017.Accepted on January 4, 2018.