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PERFORMANCE OF DISTINCT STRATEGIES ON OVERCOMING DORMANCY IN Senna obtusifolia SEEDS
PERFORMANCE OF DISTINCT STRATEGIES ON OVERCOMING DORMANCY IN Senna obtusifolia SEEDS
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PERFORMANCE OF DISTINCT STRATEGIES ON OVERCOMING DORMANCY IN Senna obtusifolia SEEDS
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PERFORMANCE OF DISTINCT STRATEGIES ON OVERCOMING DORMANCY IN Senna obtusifolia SEEDS
PERFORMANCE OF DISTINCT STRATEGIES ON OVERCOMING DORMANCY IN Senna obtusifolia SEEDS
Journal Article

PERFORMANCE OF DISTINCT STRATEGIES ON OVERCOMING DORMANCY IN Senna obtusifolia SEEDS

2022
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Overview
Senna obtusifolia apresenta estruturas favoráveis aos efeitos do fenômeno de dormência, apresentando baixas taxas de germinação por um determinado período. Este panorama pode ser contornado pelo processo de quebra de dormência, causado pela exposição da semente a condições adversas que estimulem o processo de germinação. Adequadamente, este trabalho teve como objetivo avaliar a eficiência de diferentes métodos para superação de dormência em sementes de Senna obtusifolia (L.) H. S. Irwin & Barneby. O delineamento experimental adotado foi o delineamento inteiramente casualizado (DIC), com quatro tratamentos e oito repetições de 25 sementes. Os tratamentos foram compostos por: escarificação mecânica, embebição em água e imersão em água quente. Neste estudo, observou-se, estatisticamente, diferença entre os tratamentos para todos os parâmetros avaliados, onde o tratamento sob escarificação mecânica foi o mais eficaz para promoção da germinação (99 ±1.51% de sementes germinadas). Ainda, o tratamento apresentou os resultados mais promissores para comprimento médio da parte aérea (CPA) (43.95 ± 8.66 mm) e radicular (CRP) (28.09 ± 5.27 mm), massa fresca total (MF) (1.97 ± 0.10 g) e massa seca total (MS) (0.37 ± 0.03 g). Apropriadamente, concluiu-se que a escarificação mecânica das sementes favoreceu a germinação e o tratamento foi o mais eficiente para o processo de superação de dormência de sementes de S. obtusifolia.
Publisher
Revista Engenharia na Agricultura