Reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in sympatry.,Plant Biology

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Reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in sympatry.
Plant Biology ( IF 4.2 ) Pub Date : 2020-06-05 , DOI: 10.1111/plb.13140
M A Munguía-Rosas ₁ , M E Jácome-Flores _{2,

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Affiliation

Reproductive isolation is a necessary condition for plant domestication in their domestication centre where crops co‐occur with their wild progenitors. However, the identification of reproductive barriers and their relative contribution to reproductive isolation have been overlooked in plants under domestication.
We assessed pre‐ and post‐pollination reproductive barriers and their relative contribution to reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in its domestication centre.
We found that wild and domesticated chaya both exhibit a high degree of reproductive isolation. However, the reproductive isolation barriers exhibited some asymmetry: while pre‐pollination barriers (differential pollen production and pollinator specificity) were only detected in wild plants, post‐pollination barriers (pollen–pistil incompatibility and/or failure to set fruit) were observed in both wild and domesticated plants.
We conclude that complete reproductive isolation has evolved in sympatry in co‐occurring domesticated and wild chaya.

中文翻译：

野生和驯养查亚（Cnidoscolus aconitifolius）在交感动物之间的生殖隔离。

在农作物与野生祖先共生的驯化中心，生殖隔离是植物驯化的必要条件。然而，在驯化的植物中，对生殖障碍及其对生殖隔离的相对贡献的鉴定被忽视了。
我们评估了授粉前和授粉后的生殖障碍及其对驯养中心野生和驯养查亚cha（Cnidoscolus aconitifolius）之间生殖隔离的相对贡献。
我们发现野生和驯养的查亚都表现出高度的生殖隔离。然而，生殖隔离障碍表现出一定的不对称性：虽然仅在野生植物中检测到了授粉前的障碍（花粉生产差异和授粉媒介的特异性），但在花粉中却观察到了授粉后的障碍（花粉雌蕊不相容和/或结实失败）。野生植物和驯化植物。
我们得出结论，在同时出现的驯养和野生恰雅斑纹中，完全生殖隔离已经进化为共生形式。

更新日期：2020-06-05

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