Strong natural selection during plant restoration favors an unexpected suite of plant traits.
Strong natural selection during plant restoration favors an unexpected suite of plant traits.
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DOI：
10.1111/eva.12038
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发表时间：
2013-04
影响因子：
4.1
通讯作者：
Leger EA
中科院分区：
文献类型：
--
作者：
Kulpa SM;Leger EA
恢复是研究自然选择的一个机会：人们可以测量用于发现种群的源繁殖体中性状的分布，将其与成功新招募的性状分布进行比较，并确定对潜在适应性性状的选择强度和方向。我们调查了自然选择是否影响大盆地火灾后恢复期间幼苗的生长，该地区发生了大规模恢复，在大范围的环境条件下种植了一些广泛使用的品种。我们从多年生草本披碱草 Elymus elymoides ssp 的成熟植物中收集了种子。在两个恢复地点对 californicus (squirreltail) 进行了研究，并将幸存植物的表型性状分布与原始恢复种子库进行了比较。种子被种植在公共花园中，历经两代。从在田间建立的种子长成的植物是原始种子的非随机子集，定向选择始终有利于两个田间的一组相关性状：植物和种子尺寸小，以及较早的开花物候。这些结果表明，自然选择可以以强烈且可预测的方式影响恢复建立，并且这些地点的适应性特征与当前用于选择该系统中恢复材料的标准相反。
Restoration is an opportunity to study natural selection: One can measure the distribution of traits in source propagules used to found populations, compare this with the distribution of traits in successful recruits, and determine the strength and direction of selection on potentially adaptive traits. We investigated whether natural selection influenced seedling establishment during postfire restoration in the Great Basin, an area where large-scale restoration occurs with a few widely available cultivars planted over a large range of environmental conditions. We collected seeds from established plants of the perennial grass Elymus elymoides ssp. californicus (squirreltail) at two restoration sites and compared the distribution of phenotypic traits of surviving plants with the original pool of restoration seeds. Seeds were planted in common gardens for two generations. Plants grown from seeds that established in the field were a nonrandom subset of the original seeds, with directional selection consistently favoring a correlated suite of traits in both field sites: small plant and seed size, and earlier flowering phenology. These results demonstrate that natural selection can affect restoration establishment in strong and predictable ways and that adaptive traits in these sites were opposite of the current criteria used for selection of restoration material in this system.
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影响因子：
2.3
作者：
Angadi, SV;Entz, MH
通讯作者：
Entz, MH
DOI：
10.1899/0887-3593(2007)26
发表时间：
2007-06-01
影响因子：
--
作者：
Anderson, Caroline;Cabana, Gilbert
通讯作者：
Cabana, Gilbert
影响因子：
1.9
作者：
ANTONOVICS, J
通讯作者：
ANTONOVICS, J
影响因子：
2.9
作者：
Clausen, J;Keck, WM;Hiesey, WM
通讯作者：
Hiesey, WM
影响因子：
3.1
作者：
Eiswerth, ME;Shonkwiler, JS
通讯作者：
Shonkwiler, JS