Seed Morphological Variation of Quercus mongolica and Its Relationship with Environmental Factors at Regional Scale
Under the background of warming and drying,in order to understand the adaptability of Quer-cus mongolica to environmental changes,14 seed samples of Q.mongolica populations were collected at the regional scale,their morphological indexes were measured and calculated,and the characteristics of seed morphological variation at the regional scale and its relationship with environmental factors were dis-cussed.The results showed that the difference of seed length and seed width between populations was ex-tremely significant,but the difference of length to width ratio was not significant.The seed length,seed width and 100-seed weight were positively correlated with the annual precipitation and dryness,while the annual mean temperature,altitude and latitude were not significantly correlated with each morphological index.The seed aspect ratio had no obvious change trend with the change of environment,and tended to be stable.The results of this study provided a basis for mastering the adaptation and response mechanism of Q.mongolica to environmental change in the context of global climate change.
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