Overcoming seeds dormancy of passion fruit
With the objective of evaluating the effect of different methods of overcoming seeds dormancy on P.cincinnata Mast., a research was carried out in greenhouse at Bahia State University, Campus of Vitoria da Conquista County, state of Bahia, Brazil. The experimental design was a completely randomized...
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Veröffentlicht in: | Revista Brasileira de fruticultura 2010-06, Vol.32 (2), p.584 |
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Sprache: | spa |
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Zusammenfassung: | With the objective of evaluating the effect of different methods of overcoming seeds dormancy on P.cincinnata Mast., a research was carried out in greenhouse at Bahia State University, Campus of Vitoria da Conquista County, state of Bahia, Brazil. The experimental design was a completely randomized blocks, composed of seven treatments and three replications, (T1-seeds dried in shade; T2-seeds dried in the sun; T3-seeds dried in shade followed by scarification; T4-seeds dried in shade and treated with captana (0,2%); T5-seeds dried in the sun followed by scarification; T6-seeds dried in shade and treated with hot water at 50°C; T7-seeds dried in shade and treated with hot water at 80°C. The results showed that for overcoming seeds dormancy of P. cincinnata Mast. treatments T3 (seeds dried in shade followed by scarification) and T6 (seeds dried in shade and treated with hot water at 50°C) presented the best results. Index terms: Passifloraceae, physiology, germination, scarification, quality. Com o objetivo de avaliar metodos de superacao de dormencia em sementes de maracuja-domato (P cincinnata Mast.), foi conduzido o experimento em casa de vegetacao, na Universidade Estadual do Sudoeste do Estado da Bahia--UESB, Campus de Vitoria da Conquista--BA, Brasil. O delineamento experimental foi o inteiramente casualizado, com sete tratamentos e tres repeticoes, sendo 50 sementes por parcela: T1 = sementes secas a sombra (Testemunha); T2 = sementes secas ao sol (35 ± 1°C); T3 = sementes secas a sombra com escarificacao em lixa; T4 = sementes secas a sombra tratadas com captana (0,2%); T5= sementes secas ao sol (35 ± 1°C) com escarificacao em lixa; T6 = sementes secas a sombra aquecidas em banho-maria por 5 minutos, a 50°C; T7 = sementes secas a sombra aquecidas em banho-maria por 5 minutos, a 80°C. As caracteristicas avaliadas foram: porcentagem de germinacao; porcentagem de emergencia; indice de velocidade de emergencia; altura das plantulas; diametro do caule; numero de folhas; comprimento da raiz pivotante; massa da materia seca total. Os resultados obtidos e analisados permitiram concluir que os melhores tratamentos para superacao de dormencia sao o T3 (sementes secas a sombra com escarificacao em lixa) e T6 (sementes secas a sombra aquecidas em banho-maria por 5 minutos, a 50°C). Termos para indexacao: Passifloraceae, fisiologia, germinacao, escarificacao, qualidade. |
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ISSN: | 0100-2945 |