CLASSIFICAÇÃO FISIOLÓGICA DE SEMENTES FLORESTAIS QUANTO À TOLERÂNCIA À DESSECAÇÃO E AO COMPORTAMENTO NO ARMAZENAMENTO

CERNE

Mayrinck, Rafaella Carvalho¹  Davide, Antonio Claudio¹  Vaz, Tatiana Arantes Afonso¹ 

[1] Universidade Federal de Lavras, Lavras, Brazil$$

关键词: Ex-situ conservation;    Desiccation;    Orthodox;    Recalcitrant.;   

DOI  :  10.1590/01047760201622012064

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

This work aims to classify forest seeds native to the Alto Rio Grande region regarding the desiccation tolerance and storage behaviour. Germination and water content tests were performed in seeds of different species. The tests were conducted immediately after seed processing, at 12% and 5% of water content, and at 5% after 3 months of storage in -18°C. Based on the results obtained, seeds were classified into recalcitrant, intermediate and orthodox class. Seeds of Brosimum gaudichaudii, Erythroxylum deciduum, Eugenia pleurantha, Myrcia venulosa, Nectandra megapotamica were classified as recalcitrant (22.7% of all species). Seeds of Aegiphila sellowiana, Aspidosperma parvifolium, Blepharocalyx salicifolius, Casearia lasiophylla, Cassia occidentalis, Dalbergia miscolobium, Diospyros brasiliensis, Diospyros hispida, Ilex brevicuspis, Ilex cerasifolia, Myrocarpus fastigiatus, Senna aversiflora, Senna splendida e Blepharocalyx salicifolius were classified as intermediate (59.1% of all species). Seeds of Miconia albicans, Platycyamus regnellii, Styrax camporum and Piptadenia gonoacantha were classified as orthodox (18.2% of all species).

【 授权许可】

Unknown