Floral scent and pollinator visitation in relation to floral colour morph in the mixed‐mating annual herb <i>Collinsia heterophylla</i>
نویسندگان
چکیده
Even though floral scent is of major importance for pollinator attraction, it less investigated than other traits. Previous studies suggest the joint exploration olfactory and visual cues to understand plant–pollinator interactions. We flower scents in Collinsia heterophylla, a bee-pollinated, annual herb with mixed-mating system combining self- outcross-pollination. In Collinsia, size development variation related mating system, ranging from large-flowered species small-flowered self-pollinated species. However, our knowledge, has not been described any genus. also studied whether flower-emitted volatiles were coupled presence versus absence coloured band on upper lip within population C. if these colour morphs affected visitation. performed headspace collections greenhouse potted flowering plants, compared controls bud stage. Flower-specific highly dominated by terpenoid compounds typical bee-pollinated such as β-myrcene, (Z)- (E)-ocimene sesquiterpenes (E)-α-bergamotene β-sesquiphellandrene. The aliphatic ester methyl hexanoate was prominent, together additional esters, whereas cinnamate constituted only aromatic compound. Floral showed no qualitative difference volatiles, but morph produced significantly higher quantities seven 26 individual compounds. A field experiment natural population, using behavioural observations florescent dyes dusted flowers, could detect differences visitation between morphs. conclude that heterophylla flowers emit volatile commonly associated attraction their most important pollinators. It would be interesting explore function relate across better understanding influence evolution.
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ژورنال
عنوان ژورنال: Nordic Journal of Botany
سال: 2021
ISSN: ['1756-1051', '0107-055X']
DOI: https://doi.org/10.1111/njb.03025