Session III: Long-term storage and seed deterioration (Chair: Dr Steve A. Eberhart) - Biochemical aspects of seed deterioration during storage

摘要

Generally ageing is manifested by the decrease of anabolic activity and the increase of catabolic processes. Several hypotheses have been formulated to explain the mechanism of ageing. One group of so-called deterministic hypotheses is based on the assumption that termination of ontogenesis is located in the genome. More recently, a stochastic hypothesis of ageing has been developed. According to that hypothesis, ageing is the consequence of the accumulation of damage in DNA visible in mutation effects and DNA dysfunction. Ageing seems to be a genetically programmed event that is finally expressed with the contribution of different external factors.