Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Characterization of volatile production during seed storage
Year:2015
Research Areas
  • Plants and animal biology and ecology,
  • Crop production
Information
Abstract
This paper contributes to the understanding of factors that regulate seed longevity and mechanisms that cause seed deterioration during storage. The over-all goal is to characterize the types of chemical reactions that occur in dry seeds and to relate these to the properties of the seed glassy matrix and the inevitable decline in seed quality and viability. Oxidation and peroxidation reactions occur in stored seeds and are implicated in chemical degradation. Oxidation of macromolecules gives rise to low molecular weight carbonyl compounds, many of which are volatile and so escape into the airspace of the storage container. The identity of volatile compounds indicates the nature of chemical reactions. Production of volatile compounds from seeds of different species was investigated. Volatile composition produced by seeds differs with the species: species such as Carum carvi were detected to produce large amounts of volatile compounds, while others, such as Eruca sativa, produced low quantities of only a few compounds. Qualitative and quantitative differences in volatile composition were noted as a function of storage RH: above about 30% RH glycolysis-like reactions increase with increasing RH, and below about 30% RH peroxidation-like reactions increase with decreasing RH. Assessment of volatile production from seeds during storage provides a probe to address questions about the nature and kinetics of chemical reactions that occur in the glassy matrix of stored seeds. This information reveals important information about the glass such as the proximity of reacting ligands and inter- or intra-molecular motions required to effect chemical reactions. Moreover, it could be developed as a non-invasive and early detection method of seed ageing rates.
International
Si
Congress
Seed Longevity Workshop of the International Society for Seed Science (ISSS)
960
Place
Wernigerode (Alemania)
Reviewers
Si
ISBN/ISSN
0000000000000
Start Date
05/07/2015
End Date
08/07/2015
From page
69
To page
69
Seeds for future generations ?Determinants of longevity
Participants
  • Autor: Sara Mira Perez (UPM)
  • Autor: M. Elena Gonzalez Benito (UPM)
  • Autor: Christina Walters
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: PLANGER Germoplasma Vegetal
  • Departamento: Biotecnología - Biología Vegetal
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)