Biochemical changes induced in seeds of Brassicaceae wild species during ageing

• Autorzy: Mira S. , Estrelles E. , Gonzalez-Benito M. E. , Corbineau F.
• Języki publikacji: EN

Abstrakty

EN

The aim of the present study was to determine whether the loss of seed germination capacity and vigour in seeds of four wild Brassicaceae species (Brassica repanda, Moricandia arvensis, Rorippa nasturtium-aquaticum and Sinapis alba) during ageing at 45°C and 90% relative humidity was related to changes in lipid peroxidation and membrane integrity. For all of the species, ageing reduced the final germination percentage and increased the length of time required to reach 50% of final germination (T₅₀). Large differences in longevity were observed among the species. The times required for viability to be reduced to 80 and 50% of maximum germination (P80 and P50) were the lowest for B. repanda, and these values were two times longer for M. arvensis and R. nasturtium-aquaticum and five times longer for S. alba compared with B. repanda. A loss of seed viability was not associated with malondialdehyde accumulation, suggesting that lipid peroxidation did not cause seed deterioration under these conditions. However, the conductivity test effectively detected seed deterioration in these wild Brassicaceae species, and membrane permeability correlated with both germination and vigour loss. This correlation may provide a valuable mean for early detection of seed viability in wild Brassicaceae species.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2011
• Tom: 33
• Numer: 5
• Opis fizyczny: p.1803-1809,fig.,ref.

Twórcy

autor

Mira S.

• Departamento de Biología Vegetal, E.U.I.T. Agrícola., Universidad Politecnica de Madrid, 28040, Madrid, Spain

autor

Estrelles E.

• ICBiBE-Jardí Botanic, Universitat de Valencia, 46008, Valencia, Spain

autor

Gonzalez-Benito M. E.

• Departamento de Biología Vegetal, E.U.I.T. Agrícola., Universidad Politecnica de Madrid, 28040, Madrid, Spain

autor

Corbineau F.

• UR5 UPMC-EAC 7180 CNRS, Germination et Dormance des Semences, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France

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