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首页> 外文期刊>Plant and Soil >Local adaptation to serpentine soils in Pinus ponderosa.
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Local adaptation to serpentine soils in Pinus ponderosa.

机译：黄松中对蛇形土壤的局部适应。

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Local adaptation to serpentine soils is studied using both transplant experiments and molecular genetic techniques. In long-lived species, such as pines, it is unclear how soon after germination local adaptation becomes detectable. Here I present results of a 36-year reciprocal transplant experiment using Pinus ponderosa, along with allozyme analyses from the same trees. Using a repeated measures analysis of variance, there is evidence for adaptation to serpentine soils; however, significant differences between source soil types do not become apparent until 20 years after the start of the experiment. Analysis of allozyme data showed no evidence for differentiation between the serpentine and non-serpentine populations. Comparing the performance of families over the course of the experiment found that there was little correlation between performance after 1 or 4 years of growth in the field and performance after 36 years. This suggests that short-term transplant experiments may not provide definitive evidence for adaptation to serpentine soils. A literature survey of all transplant studies using pine species growing on and off of serpentine soils found that studies that lasted fewer than 2 years showed no evidence for adaptation. However, in the two experiments (this one included) that lasted more than 2 years, both showed evidence for adaptation to serpentine soils. More long-term experiments are required to validate these results..
机译：使用移植实验和分子遗传技术研究了对蛇形土壤的局部适应性。在诸如松树这样的长寿命物种中，目前尚不清楚发芽后多久才可以检测到局部适应。在这里，我介绍了使用美国黄松进行的为期36年的相互移植实验的结果，以及来自同一棵树的同工酶分析。使用重复测量的方差分析，有证据表明可以适应蛇形土壤。但是，直到实验开始20年后，源土壤类型之间的显着差异才变得明显。对同工酶数据的分析表明，没有证据表明蛇纹石和非蛇纹石种群之间存在差异。比较整个实验过程中家庭的表现，发现田间生长1年或4年后的表现与36年后的表现之间几乎没有相关性。这表明短期移植实验可能无法提供适应蛇纹石土壤的确切证据。对所有使用在蛇形土壤上生长的松树种进行的移植研究的文献调查发现，历时不到2年的研究表明没有适应的证据。但是，在历时2年以上的两个实验（包括该实验）中，两个实验均显示出对蛇形土壤适应的证据。需要更多长期的实验来验证这些结果。

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