A framework for the interpretation of temperature effects on dormancy and germination in seed populations showing dormancy
A framework for the interpretation of temperature effects on dormancy and germination in seed populations showing dormancy
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DOI：
10.1017/s0960258514000452
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发表时间：
2015-06-01
影响因子：
2.1
通讯作者：
Benech-Arnold, Roberto L.
中科院分区：
文献类型：
--
作者：
Batlla, Diego;Benech-Arnold, Roberto L.
温度是影响休眠和发芽的关键因素。在非休眠种子中，当温度在允许萌发的温度范围内时，它仅调节萌发速度，而在处于休眠状态的种子中，它还可以影响休眠水平、休眠终止和休眠本身的表达。温度对休眠和萌发的双重影响经常导致对发芽结果的误解，并混淆了对具有一定程度休眠的种子群体的温度影响的分析。在本文中，我们讨论了温度对休眠水平的调节作用及其在休眠表达中的含义，试图构建一个概念框架，以区分温度对休眠和萌发的影响。最后，我们举例说明如何更好地理解这些影响可以帮助我们解释温度在种子休眠期间对这两个过程的混合影响。
Temperature is a key factor affecting both dormancy and germination. In non-dormant seeds, when temperature is within the thermal range permissive for germination, it just regulates germination velocity, while in seeds presenting dormancy it can also be affecting dormancy level, dormancy termination and the expression of dormancy itself. This dual effect of temperature on dormancy and germination often leads to misinterpretation of obtained germination results and confounds the analysis of temperature effects in seed populations presenting some degree of dormancy. In the present paper we discuss the effect of temperature in the regulation of dormancy level and its implications in dormancy expression, as an attempt to construct a conceptual framework that allows distinguishing between the effects of temperature on dormancy and germination. Finally, we present examples of how a better understanding of these effects could help us to interpret the mixed effects of temperature on both processes during incubation of seeds presenting dormancy.