Sanidade em lotes de sementes florestais nativas do Brasil

Abstract

The demand of quality, forest seeds has been suffering greatly increased, since the need for conversation of native forests. With the creation of environmental policies, trade areas plantations contributing directly to this growth. Lots of forest seed must be free of plant pathogens, thus avoiding contamination in disease-free areas, economic losses and ensuring a quality forest planting. And the lack of study and information about lots of native forest seeds, causes the spread of diseases. The objective of this work was to evaluate the sanity in lots of forest-tree seeds native to Brazil. 13 native forest species were collected and provided by the IAP-UMUARAMA. The tests were carried out through the filter paper method (BRAZIL, 2009). For each test a batch of 200 seeds. Each lot was distributed on filter paper moistened with water on seed dispersal in container. The treatments were stored for a period of (7 days) in growth Chamber BOD to 24°C with 12-hour period photo. The evaluations were carried out with stereoscopic microscope, and identification of degrowth structures and reproduction of pathogens present. The experimental design was completely randomized with eight repetitions for each species. Data were subjected to analysis of averages by Scot-Knott test at 5% probability of error. It is concluded that fungi had more impact on lots of native forest seeds from Brazil were: Fusarium SP., Rhizopus SP., Penicillium SP., and Aspergillus sp.