ARMAZENAMENTO DE SEMENTES E SOMBREAMENTO NA EMERGêNCIA E CRESCIMENTO INICIAL DAS MUDAS DE Magonia pubescens A. St.-Hil.

摘要

The conservation of seeds, as well as the amount of light, are important factors for good germination and seedling production quality. In the present study the effect of storage and different levels of light on the emergence and initial growth of seedlings of (Magonia pubescens St. Hil. was evaluated. Two experiments were conducted. In the first one, the storage was done in three packaging types (aluminum foil, paper and plastic bag low density polyethylene) and under two temperatures (10 and 25 °C) for three periods of storage (30, 60 and 90 days) or without storage. In the second experiment the initial growth of seedlings was studied in four shading levels (30, 50 and 70%) and full sun. The seeds of M. pubescens germinate best when they were not stored, with averages of 97% compared to 69% after 90 days of storage. If necessary, the storage must be carried in a plastic bag at 25 °C for 90 days. The seedlings had higher emergence and quality when sowing and growth were performed under 50% of shading.