Storage on the vigor and viability of macauba seeds from two provenances of Minas Gerais State

Ciência Rural

Motoike, Sérgio Yoshimitsu¹  Silva, Antônio Marcos¹  Carvalho, Mychelle³  Borges, Eduardo Euclydes de Lima e²  Kuki, Kacilda Naomi¹  Souza, Patrícia Pereira de¹ 

[1] Universidade Federal de Viçosa (UFV), Viçosa, Brazil;Universidade Federal de Viçosa (UFV), Campus Viçosa, Brazil;Acrotech Sementes e Reflorestamento SA, Viçosa, Brasil

关键词: Acrocomia aculeata;    recalcitrant;    orthodox;   

DOI  :  10.1590/0103-8478cr20150848

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:Macauba palm stands out for having favorable features to biodiesel production such as the high oil content of its fruit. Considering the great potential of the species and their applicability in the renewable energy field, it becomes indispensable to establish the right conditions for storing the seeds for propagation purpose. The aim of this research was to evaluate the effect of seed moisture content, packaging, and storage conditions such as temperature and relative humidity on the quality of seeds from Minas Gerais State, during a 12-month storage period. The research had two independent assays: (I) the seeds were stored with three moisture contents/ranges 4.0≤6.0%; 6.0≤8.0% and 8.0≤10.0% in impermeable packages, under room temperature and at 10ºC; (II) seeds with approximately 5.9% of moisture content were stored in three different types of packages: a) permeable, b) semi-permeable and c) impermeable. Three storing conditions were tested: a) room temperature and RH under laboratory conditions; b) 15ºC and 45% RH; c) 20ºC and 55% RH. Water content, germination rate and germination speed index were evaluated at 0, 4, 8 and 12 months of storing. The best germination results were obtained with the moisture range of 6.0≤8.0%, with seeds kept at room temperature; while the seeds stored at 10ºC, regardless the moisture range, did not survive. The stored seeds with 5.9% moisture content and at both 15ºC/45%RH and 20ºC/55% RH conditions, independently of the package type used, showed the best results. Thus, macaw palm seeds can be classified as intermediates seeds.

【 授权许可】

Unknown