Abstract

SOLIS-SANDOVAL, S.; GOMEZ-ROMERO, M.  and  VELAZQUEZ-BECERRA, C.. Seed viability and germination of Cordia elaeagnoides A. DC. Polibotánica [online]. 2019, n.48, pp.121-134.  Epub June 15, 2020. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.48.10.

A loss in seed viability has been identified in important forest species, which is why it is necessary to develop strategies that address the problem, as well as to recognize morphologically superior individuals to favor the production and quality of germplasm. The present work evaluated the viability and germination of Cordia elaeagnoides in the municipalities of Tumbiscatío and La Huacana in the state of Michoacán, México, generating information that supports their use. Eight seed trees were selected according to the protocols of the International Seed Testing Association (ISTA), and seed samples were obtained to perform various viability and germination tests, and found that the seeds coming from the middle/high zone of the tree crown had a higher percentage of viability, diameter and length, in comparison with those coming from the low zone of the crown. Likewise, it was found that temperature substantially affects the germination, 53% at 30ºC. In the complex process of germination in orthodox and recalcitrant seeds, factors such as temperature and growth plant regulators are strongly linked, and the disturbance of their natural environment directly affects the metabolic homeostasis in seed. Germination energy in C. elaeagnoides has been reported as low, but can increase significantly, becoming an option for its production.

Keywords : Forest management; germplasm; timber species; Cordia exsucca Sessé & Moc.

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