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Mixed mating after the loss of self-incompatibility in a long-living perennial herb

Flowering plants display an extensive range of adaptive floral forms, which are often correlated with their mating systems. The maintenance of contrasting strategies such as those adopted by obligate outcrossers compared to populations that have evolved a selfing system is one of the most studied topics in reproductive evolution.

toadflax Linaria cavanillesii
Toadflax Linaria cavanillesii

Voillemot and Pannell study variation in mating systems in Spanish toadflax Linaria cavanillesii, a long-lived perennial species. Some unexpected features are reported, such as an absence of shift in flower morphology in the self-compatible population, together with the maintenance of outcrossing despite no apparent inbreeding depression.

Written by Annals of Botany Office

The Annals of Botany Office is based at the University of Oxford.

Floral longevity measured as time (d) until wilt of stigma (grey bars) and corolla (white bars), under different pollination conditions.

Plasticity of key floral traits influences pollinator attraction

Silkmoth cocoon

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