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Revista Brasileira de Sementes

versão impressa ISSN 0101-3122

Resumo

AMARAL, Julia Bissoli do et al. X-ray test to evaluate the physiological potential of Tabebuia heptaphylla seeds. Rev. bras. sementes [online]. 2011, vol.33, n.4, pp.601-607. ISSN 0101-3122.  http://dx.doi.org/10.1590/S0101-31222011000400001.

The use of seeds with a high physiological potential is essential to guarantee proper field establishment and seedling development. Several techniques have been used to evaluate seed quality including the X-ray test. The objective of this study was to evaluate the physiological potential of Tabebuia heptaphylla seeds with X-ray and germination tests after grading by color and size. Seeds were classified using the Munsell color chart and screens, in light-yellow larger, light-yellow smaller, dark-yellow larger, dark-yellow smaller, mixture of light-yellow larger, light-yellow smaller and dark-yellow larger and control. Seeds from different fractions were then submitted to X-ray and germination tests. The experimental design was completely randomized with six treatments and five replicationsand mean values were compared by the Scott-Knott test (< 5%). Results showed that the X - ray test effectively evaluates the internal morphology of Tabebuia heptaphylla seeds and its relationship with physiological potential. Seed color and size affect the physiological potential of Tabebuia heptaphyla seeds.

Palavras-chave : Tabebuia heptaphylla; image analysis; forest seeds; seedling production.

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