LIMITS FOR GERMINATION, PURITY, HUMIDITY AND 1000-SEED WEIGHT IN SEED ANALYSIS OF NATIVE TREE SPECIES IN RIO GRANDE DO SUL STATE

• Autor(a) principal: Brüning, Fernanda de Oliveira
• Data de Publicação: 2011
• Outros Autores: Lúcio, Alessandro Dal’Col, Muniz, Marlove Fátima Brião
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/3221
• topic: forest seeds; confidence limits; evaluation criteria.; sementes florestais; limites de confiança; critérios de avaliação

This study had the objective of establishing limits for seed germination, purity, 1000-seed weight and humidity, aiming at the quality control of laboratory seed analysis for forest species. To that end, results of forest species seed analysis from 1997 until 2007 were obtained from the archives of the Laboratory of Seed Analysis of the Agricultural Research Foundation of the State of Rio Grande do Sul. The limits of reliability were constructed from an analysis of data normality and the use of evaluation criteria of Pseudo-sigma. These limits were effective in the establishment of a minimum acceptable value in order for a plot of seeds to be commercialized, proposing that the germination values inside the low confidence limits must be discarded, because they don´t present acceptable germination rates.