Biomass-allocation patterns in populations of Trillium erectum and T. grandiflorum in southern Ontario
Biomass-allocation patterns in populations of Trillium erectum and T. grandiflorum in southern Ontario
复制标题
安大略省南部延龄草和大花延龄草种群的生物量分配模式
DOI：
10.1139/b87-228
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
G. S. Ringius
中科院分区：
文献类型：
--
作者：
J. Chmielewski;G. S. Ringius
研究了延龄草和桔梗6个居群的生物量向地上组织的分配格局。萨利布。在安大略省南部。直肠草种群的总生物量没有差异，但雄蕊比例和繁殖力总体上从西南向东北递减。桔梗总生物量在不同种群间差异显着，其繁殖努力模式与直立葛根相反。在安大略省南部，这两个物种的雄蕊-雌蕊比率从西南到东北呈下降趋势。这些结果表明，安大略省南部可能在东北方向上发生了从异交性向自交性的转变。
Biomass-allocation patterns to aerial tissues were examined among six populations for each of Trillium erectum L. and T. grandiflorum (Michx.) Salisb. in southern Ontario. Total biomass did not differ among populations of T. erectum, but androecial proportions and reproductive effort generally decreased from southwest to northeast. Total biomass of T. grandiflorum varied significantly among populations and its pattern of reproductive effort was the reverse of that of T. erectum. Androecium–gynoecium ratios decreased across southern Ontario from southwest to northeast for both species. These results suggest that there may be a shift from allogamy to autogamy in a northeasterly direction across southern Ontario.