Slug herbivory on hybrids of the crop Brassica napus and its wild relative B. rapa
Slug herbivory on hybrids of the crop Brassica napus and its wild relative B. rapa
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DOI：
10.1016/j.baae.2018.06.001
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发表时间：
2018-09-01
影响因子：
3.8
通讯作者：
de Jong, Tom J.
中科院分区：
文献类型：
--
作者：
Baaij, B. Martina;Kim, Hye Kyong;de Jong, Tom J.
一些植物物种可以相互杂交，但它们之间几乎没有基因流动，仍然保持不同。选择性食草动物可以解释这种模式时，杂交更敏感或中间的父母。我们进行了选择和无选择实验与蛞蝓阿里翁lusitanicus测试这一假设的作物油菜，野生B。以及它们的回交后代。在这两个实验中，蛞蝓都非常喜欢B。油菜高于B。而回交后代的平均植食性介于两者之间。杂交种中脂肪族硫代葡萄糖苷的浓度介于亲本之间。蛞蝓食草动物可能会减少建立回交杂种。这一假设需要在实地进行检验。(C)2018 Gesellschaft fur Okologie.由Elsevier GmbH出版。All rights reserved.
Some plant species can cross with each other but stay nevertheless distinct with little gene flow between them. Selective herbivory could explain this pattern when hybrids are more susceptible or intermediate between their parents. We performed choice and no-choice experiments with the slug Arion lusitanicus to test this hypothesis for the crop Brassica napus, wild B. rapa and their backcross hybrids. In both experiments slugs greatly preferred B. napus over B. rapa while average herbivory on backcross hybrids was intermediate. Concentrations of aliphatic glucosinolates in the hybrids were intermediate between the parental species. Slug herbivory potentially reduces establishment of backcross hybrids. This hypothesis needs to be tested in the field. (C) 2018 Gesellschaft fur Okologie. Published by Elsevier GmbH. All rights reserved.