In a separate regression analysis of clonality on elevation, a significantly positive relationship between clonality and elevation was detected in unisexual plants, but this relationship was marginally significant in bisexual plants; furthermore, a steeper elevational gradient in incidence of clonal reproduction was found in plants with unisexual flowers in comparison with their bisexual counterparts (slope: 0.002 vs. 0.0003; Fig. 3 ab).
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Distribution patterns of clonal plants in the subnival belt of the Hengduan Mountains, SW China.
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The sentences
The effect of elevational distribution on clonality was further supported by our logistic regression analyses, which showed a highly significant increase in the incidence of clonal reproduction with increasing elevation.