Abstract This study presents the sensitivity analysis of Ellis and Roberts (1980a, 1980b) viability model as this is derived from the contribution of moisture content, seed temperature and time step variables. The analysis revealed significant increase in sensitivity of viability regarding the time variable for Δt 720min, the moisture content variable exhibited increasing sensitivity of viability, but to a lesser degree than this of the time variable. Also, in all the tested cases, the temperature variable exhibited the least contribution to the viability sensitivity. Furthermore, a modification in the viability model is proposed incorporating the concept of effective values of seed temperature and moisture content to more appropriately reproduce the fluctuating behaviour of the actual storage conditions. Finally, an improved version of the effective temperature and moisture content variables based on the improved viability model is proposed.

中文翻译：

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温度和水分波动条件下种子活力建模及敏感性分析

摘要 本研究介绍了 Ellis 和 Roberts (1980a, 1980b) 生存力模型的敏感性分析，因为这是从水分含量、种子温度和时间步长变量的贡献中推导出来的。分析表明，对于 Δt 720 分钟，生存力对时间变量的敏感性显着增加，水分含量变量表现出生存力的敏感性增加，但程度低于时间变量的敏感性。此外，在所有测试案例中，温度变量对生存力敏感性的贡献最小。此外，还建议对活力模型进行修改，纳入种子温度和水分含量的有效值的概念，以更恰当地再现实际储存条件的波动行为。最后，