Morphological changes and resource allocation of Zizania latifolia (Griseb.) Stapf in response to different submergence depth and duration

文献类型： 外文期刊

第一作者： Wang, Qiulin

作者： Wang, Qiulin;Chen, Jingrui;Liu, Fan;Chen, Jingrui;Li, Wei;Wang, Qiulin;Chen, Jingrui;Li, Wei;Li, Wei

作者机构：

关键词： Growth elongation;Root:shoot ratio;Submergence duration;Water level;Zizania latifolia;Wetland plants

期刊名称：FLORA （ 影响因子：2.088； 五年影响因子：2.072 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Plants around ponds, rivers and lakes are subjected to long-term partial or complete submergence. When they are flooded, water level affects the plants simultaneously with duration of submergence. Separate and interactive effects of water level and duration on the growth of the herbaceous perennial Zizania latifolia (Poaceae) were investigated by exposing the plants in greenhouse water tanks to submergence in different water depths and for different time-spans. The plants exhibited great shoot elongation upon submergence and prolonged flood duration, and the basal tiller number of the species decreased with higher water levels. Submergence treatment advanced the flowering date and increased the inflorescence number. Plant total biomass did not differ among all the treatments, while the root:shoot ratio decreased with increased water level, prolonged duration of submergence and their interaction. The high plasticity in morphology and shifts in reproductive strategy and biomass allocation enabled the Zizania plants to survive the compound effect of flooding height and duration. This may explain the occurrence of this species in habitats subjected to long-term flooding. The results obtained in this experiment will contribute to understanding the impact of flooding dynamics on plants and the ways of adaptation responses to prolonged waterlogging.

分类号： Q944`Q948`Q945

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