Functional pollinators and morph ratio in Narcissus

Functional pollinators and morph ratio in Narcissus

Functional pol­lin­at­ors and morph ratio in Narcissus

Heterostyly and related style poly­morph­isms are good model sys­tems to eval­u­ate the import­ance of func­tional pol­lin­at­ors in the main­ten­ance of pop­u­la­tion vari­ab­il­ity. Santos-Gally et al. study floral traits in style-dimorphic Narcissus papyraceus in the south-west of the Iberian Peninsula and north-west Africa in rela­tion to vis­it­a­tion rates by long– versus short-tongued pol­lin­at­ors. They find that allo­met­ric effects of dis­crete vari­ation in flower size are asso­ci­ated with vari­ation in reci­pro­city, but neither tube length or stigma–anther sep­ar­a­tion account for morph-ratio vari­ation. Loss of stylar poly­morph­ism in pop­u­la­tions is cor­rel­ated with high vis­it­a­tion rates of short-tongued pol­lin­at­ors, which sug­gests that their abund­ance may over­whelm any pos­sible effects of long-tongued pollinators.

Annals of Botany Office.

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