Host use of a hemiparasitic plant: no trade-offs in performance on different hosts
Host use of a hemiparasitic plant: no trade-offs in performance on different hosts
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DOI：
10.1111/j.1420-9101.2005.01024.x
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发表时间：
2006-03-01
影响因子：
2.1
通讯作者：
Mutikainen, P
中科院分区：
文献类型：
--
作者：
Ahonen, R;Puustinen, S;Mutikainen, P
为了检验一种半寄生植物对最有益的寄主物种的假定专化性，我们研究了表现的遗传变异和在通用型半寄生植物犀牛中不同寄主物种之间的表现之间的权衡。我们在毛地老虎和红三叶上种植了25个这种寄生虫的母系半同胞家庭，温室里没有寄主。该寄生虫在草地早熟禾上的生物量和花朵数最高。寄主种类与5号斑潜蝇种子家之间存在着显着的互作，表明在两种寄主和无寄主条件下的表现在不同家系间存在差异。然而，我们没有发现丝核菌在寄主物种上的表现或在两种寄主上的表现与自养性能之间没有显著的负相关。因此，本文所研究的遗传因素不太可能影响5号轮纹夜蛾向最有益寄主的特化进化。
To examine putative specialization of a hemiparasitic plant to the most beneficial host species, we studied genetic variation in performance and trade-offs between performance on different host species in the generalist hemiparasite, Rhinanthus serotinus. We grew 25 maternal half-sib families of the parasite on Agrostis capillaris and Trifolium pratense and without a host in a greenhouse. Biomass and number of flowers of the parasite were the highest when grown on T. pratense. There were significant interactions between host species and R. serotinus seed-family indicating that the differences in performance on the two hosts and without a host varied among the families. However, we found no significant negative correlations between performance of R. serotinus on the host species or between performance on the two hosts and autotrophic performance. Thus, the genetic factors studied here are not likely to affect the evolution of specialization of R. serotinus to the most beneficial host.