Physiological quality of Copaifera duckei Dwyer Dwyer seeds stored in different environments and time

ABSTRACT

Despite the economic importance of products from the genus Copaifera, there are few reports on aspects of germination and storage of Copaifera duckei Dwyer. Thus, the objective was to evaluate the storage capacity of C. duckei seeds in different environments and periods. After collection and processing, part of the seeds was directed to germination and the rest was stored in a laboratory environment, freezer and refrigerator for up to 90 days. Germination percentage, Speed Germination Index, Mean Germination Time, length and dry mass of seedlings were evaluated. Among the main results there was a constant drop in the percentage of germination, in 90 days it presented only 10%. Seed vigor evaluated by mean germination time and seedling dry mass was lower when stored in a freezer or refrigerator. With that, it was concluded that Copaifera duckei seeds reduce viability after 60 days of storage, with less seed vigor in the freezer and refrigerator. Therefore, it is recommended to store the seeds in a laboratory environment to maintain germination for a short period.

Keywords:
germination; forest seed; seed viability