1. Repositorio institucional de CLACSO
2. Colección de los Centros Asociados
3. Brasil
4. Núcleo de Pesquisa sobre Crianças, Adolescestes e Jovens - Universidade Federal do Piauí - NUPEC/UFPI - Cosecha

Título :	Physical and physiological quality of seeds of Ricinus communis L. after the debarking Qualidade física e fisiológica de sementes de Ricinus communis L. após o processo de descascamento
Palabras clave :	Métodos de beneficiamento;germinação;vigor.
Editorial :	Federal University of Piauí
Descripción :	The production of high quality seeds of Ricinus communis, is a major challenge for agriculturalresearch, need to adopt technologies for evaluating the physical and physiological quality of seeds,especially during processing. The objective of this study was to evaluate the germination and vigor ofseeds of R. communis BRS Energy and the damage caused by types of processing. After processingby methods manual, batting, machine of crank and prototype, the seeds were conducted at theLaboratory of Storage and Processing of Agricultural Products of UFCG and subjected to tests ofgermination, vigor (first count, germination speed index, length of root and shoot, and dry weightof root and shoot) and tetrazolium. We used a completely randomized design with four treatmentsand five replicates of 50 seeds. The peeling performed manually and by mean of the prototypeallowed positive results for germination and vigor (90% for both tests) as well as in tetrazolium test inwhich they were checked low percentages of damage (8.8 and 9.6 %, respectively). Peeling doneby machine activated by the crank provided results that interfered vigor of seeds, mainly in lengthand dry weight of seedling. While the method of batting promoted lower germination percentage(64%) and a higher percentage of damage (23.2%), mainly affecting the hypocotyl-radicle axis.The processing performed manually and by means of prototype does not affect the germinationand vigor of seeds, although the latter is considered more economically advantageous for theprocessing of R. communis; whereas the method of the batting is considered unfeasible for thisstage of production due to the high percentage of seeds with damage, especially in the region ofhypocotyls-radicle axis of the seeds. A produção de sementes de alta qualidade de Ricinus communis, constitui um grande desafiopara a pesquisa agrícola, necessitando-se adotar tecnologias que permitam avaliar a qualidadefísica e fisiológica das sementes, principalmente durante o beneficiamento. Objetivou-se comeste trabalho avaliar a germinação e o vigor das sementes de R. communis cultivar BRS Energia,bem como os danos ocasionados pelos tipos de beneficiamentos. Após o beneficiamento pelosmétodos manual, batedura, máquina de manivela e protótipo, as sementes foram conduzidas aoLaboratório de Armazenamento e Processamento de Produtos Agrícolas da UFCG e submetidasaos testes de germinação, vigor (primeira contagem, índice de velocidade de germinação,comprimento de raiz e parte aérea e massa seca de raiz e parte aérea) e de tetrazólio. Utilizou-se odelineamento inteiramente casualizado com quatro tratamentos e cinco repetições de 50 sementes.O descascamento realizado manualmente e por meio do protótipo possibilitou resultados positivosquanto à germinação e vigor das sementes (90% para ambos os testes), assim como no teste detetrazólio no qual foram verificados baixos percentuais de danos (8,8 e 9,6%, respectivamente). Odescascamento realizado pela máquina acionada pela manivela proporcionou resultados queinterferiram no vigor das sementes, principalmente no comprimento e massa seca das plântulas.Enquanto que o método da batedura promoveu menor percentual de germinação (64%) e maiorpercentual de danos (23,2%), afetando principalmente o eixo hipocótilo-radícula. O beneficiamentorealizado manualmente e por meio do protótipo não afetam a germinação e o vigor das sementes,embora este último é considerado economicamente mais vantajoso para o beneficiamento deR. communis; enquanto que o método da batedura é considerado inviável para esta etapa deprodução devido ao alto percentual de sementes com danos, principalmente na região do eixohipocótilo-radícula das sementes. Physical and physiological quality of seeds of Ricinus communis L. after the debarkingAbstractThe production of high quality seeds of Ricinus communis, is a major challenge for agriculturalresearch, need to adopt technologies for evaluating the physical and physiological quality of seeds,especially during processing. The objective of this study was to evaluate the germination and vigor ofseeds of R. communis BRS Energy and the damage caused by types of processing. After processingby methods manual, batting, machine of crank and prototype, the seeds were conducted at theLaboratory of Storage and Processing of Agricultural Products of UFCG and subjected to tests ofgermination, vigor (first count, germination speed index, length of root and shoot, and dry weightof root and shoot) and tetrazolium. We used a completely randomized design with four treatmentsand five replicates of 50 seeds. The peeling performed manually and by mean of the prototypeallowed positive results for germination and vigor (90% for both tests) as well as in tetrazolium test inwhich they were checked low percentages of damage (8.8 and 9.6 %, respectively). Peeling doneby machine activated by the crank provided results that interfered vigor of seeds, mainly in lengthand dry weight of seedling. While the method of batting promoted lower germination percentage(64%) and a higher percentage of damage (23.2%), mainly affecting the hypocotyl-radicle axis.The processing performed manually and by means of prototype does not affect the germinationand vigor of seeds, although the latter is considered more economically advantageous for theprocessing of R. communis; whereas the method of the batting is considered unfeasible for thisstage of production due to the high percentage of seeds with damage, especially in the region ofhypocotyls-radicle axis of the seeds.Keywords: Beneficiation methods, germination
URI :	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77574
Otros identificadores :	https://comunicatascientiae.com.br/comunicata/article/view/215 10.14295/cs.v4i2.215
Aparece en las colecciones:	Núcleo de Pesquisa sobre Crianças, Adolescestes e Jovens - Universidade Federal do Piauí - NUPEC/UFPI - Cosecha

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