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首页> 外文期刊>Biochemical Genetics >Mating Systems of Psychotria tenuinervis (Rubiaceae): Distance from Anthropogenic and Natural Edges of Atlantic Forest Fragment
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Mating Systems of Psychotria tenuinervis (Rubiaceae): Distance from Anthropogenic and Natural Edges of Atlantic Forest Fragment

机译：拟南芥（Rubiaaceae）的交配系统：距人为和自然边缘的大西洋森林片段的距离

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The aim of this study was to determine and compare the mating systems among Psychotria tenuinervis populations at anthropogenic edges, natural edges, and the forest interior using allozyme electrophoresis of naturally pollinated progeny arrays. P. tenuinervis showed low outcrossing rates, varying from 37% to 50% of the mating attributable to outcrossing and 50% to 63% attributable to self-fertilization, in the three habitats. The forest interior had the highest outcrossing rate (t m = 0.50 and t s = 0.43) among the three habitats. However, there were no differences in either multilocus or single-locus rates among the three habitats, indicating that the contribution of biparental inbreeding to the apparent selfing rate in these populations was very low. The multilocus (t m) and single-locus (t s) outcrossing rates for the P. tenuinervis in the sample plots within each habitat showed great heterogeneity. In conclusion, edge creation seems not to influence its mating systems. Additionally, although P. tenuinervis is a distylous species, the population’s inbreeding can be attributed almost entirely to self-fertilization.
机译：本研究的目的是使用自然授粉后代阵列的同工酶电泳，在人为边缘，自然边缘和森林内部确定和比较拟南芥气单胞菌种群之间的交配系统。在三个生境中，tenuinervis的异交率很低，交配的比例为交配的37％至50％，自肥的交配的比例为50％至63％。在这三个生境中，森林内部的异化率最高（t m = 0.50和t s = 0.43）。但是，三个生境之间的多位点或单位点发生率均无差异，这表明在这些种群中，双亲近亲繁殖对表观自交率的贡献非常低。在每个生境的样地中，tenuinervis的多位点（t m ）和单位点（t s ）异交率显示出很大的异质性。总之，边缘创建似乎不会影响其交配系统。此外，尽管tenuinervis P. tenuinervis是一种畸形物种，但该种群的近交几乎可以完全归因于自我受精。

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