Improving germination and vigour of aged and stored onion seeds by matriconditioning
2002
Szafirowska, A. (Institute of Vegetable Crops, Skierniewice (Poland)) | Grzesik, M. (Institute of Pomology, Skierniewice (Poland)) | Habdas, H. | Staniaszek, M.
Germination and vigour of accelerated aged (AA) and naturally stored onion seeds were examined. Accelerated ageing was conducted at 40 deg C and 100 percent relative humidity (RH). Non aged seeds were stored for 34 months at 3 or 15 deg C and 40, 60 or 90 percent RH. To restore seed viability, stored and aged seeds were matriconditioned with Micro-Cel E. A distinct loss of germination was observed after 5 days of accelerated ageing. Naturally stored seeds maintained high viability for 34 months, when stored at 3 deg C and 40, 60 and 90 percent RH or at 15 deg C and 40 percent. An increase of RH to 60 and 90 percent at 15 deg C caused loss of germination and vigour. Matriconditioning improved germination and increased endogenic ethylene release and in vivo ACC oxidase activity of both aged and stored seeds
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