Aims

We determined effects of soil from three habitats differing in physiochemical properties on transgenerational plasticity in diaspore production of the diaspore-polymorphic annual Ceratocarpus arenarius.

Methods

Production of three disapore morphs and size of F₀ plants in a sand desert (S) were evaluated. F₁ plants from morphs at soil surface (a) and middle (c) and upper (f) parts of canopy of F₀ plants were grown in soil from S, salt desert (SD) and desert steppe (DS) and evaluated for diaspore production and plant size.

Results

Number of dispersal unit morphs for F₀ plants in S was (f > c)> > a. Plants from all three morphs varied in size, mass and mass allocation. For F₁ plants (compared to F₀), a:(c + f) was the same or increased in S (poor soil) and decreased in DS (good soil); c:(a + f) increased in S and DS; and f:(a + c) decreased in S and DS. In SD, ratios for F₁ plants from a and c were the same as those in S, but ratios for F₁ plants from f were the same as those in S and DS.

Conclusions

Differences in soil physiochemistry caused flexibility in plant size, mass and mass allocation and proportion of diaspore morphs across generations.

中文翻译：

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栖息地-土壤因子对水生多形多态性冷漠荒漠年生可塑性的影响

目的

我们确定了来自三个不同生境的生境的土壤对水生多形多角形一年生雪蛤的水成虫生产中的代代可塑性的影响。

方法

评估了沙漠中（S）的三种双孢子形态的产生和F ₀植物的大小。从S，盐沙漠（SD）和沙漠草原（DS）的土壤中生长F ₀植物冠层土壤表面（a）和中部（c）以及上部（f）形态的F ₁植物生产和工厂规模。

结果

S中F ₀植物的分散单位形态数量为（f> c）>> a。所有这三种形态的植物在大小，质量和质量分配上都不同。对于F ₁植物（与F ₀相比），S ：（土壤贫瘠）a：（c + f）相同或增加，而DS（良好土壤）则减少：c：（a + f）在S和DS中增加；f：（a + c）在S和DS中降低。在SD，比率与F _1个从A和C植株的那些相同的S，但比与F _1个选自F植株的那些相同的S和DS。

结论

土壤生理化学的差异导致了不同世代植物大小，质量和质量分配以及硬孢子形态比例的灵活性。