Herkogamy and Mating Patterns in the Self-compatible Daffodil Narcissus Longispathus

Overview

Journal Ann Bot

Publisher Oxford University Press

Specialty Biology

Date 2005 Mar 31

PMID 15797899

Citations 15

Authors

Monica Medrano

Carlos M Herrera

Spencer C H Barrett

Affiliations

Soon will be listed here.

Abstract

Background And Aims: Floral design in self-compatible plants can influence mating patterns. This study investigated Narcissus longispathus, a self-compatible bee-pollinated species with wide variation in anther-stigma separation (herkogamy), to determine the relationship between variation in this floral trait and the relative amounts of cross- and self-fertilization.

Methods: Anther-stigma separation was measured in the field in six populations of N. longispathus from south-eastern Spain. Variation in herkogamy during the life of individual flowers was also quantified. Multilocus outcrossing rates were estimated from plants differing in herkogamy using allozyme markers.

Key Results: Anther-stigma separation varied considerably among flowers within the six populations studied (range = 1-10 mm). This variation was nearly one order of magnitude larger than the slight, statistically non-significant developmental variation during the lifespan of individual flowers. Estimates of multilocus outcrossing rate for different herkogamy classes (t(m) range = 0.49-0.76) failed to reveal a monotonic increase with increasing herkogamy.

Conclusions: It is suggested that the lack of a positive relationship between herkogamy and outcrossing rate, a result that has not been previously documented for other species, could be mostly related to details of the foraging behaviour of pollinators.

Citing Articles

Evaluation of floral volatile patterns in the genus using gas chromatography-coupled ion mobility spectrometry.

Losch F, Liedtke S, Vautz W, Weigend M Appl Plant Sci. 2023; 11(1):e11506.

PMID: 36818782 PMC: 9934524. DOI: 10.1002/aps3.11506.

Breeding systems of naturalized versus indigenous species provide support for Baker's law on Pohnpei island.

Yomai V, Williams J AoB Plants. 2021; 13(4):plab038.

PMID: 34336178 PMC: 8317631. DOI: 10.1093/aobpla/plab038.

Efficiency of Herkogamy in (Amaryllidaceae).

Navarro L, Ayensa G, Sanchez J Plants (Basel). 2021; 10(4).

PMID: 33805464 PMC: 8065898. DOI: 10.3390/plants10040648.

Mating system of : association between selfing rates and herkogamy within populations.

Jimenez-Lobato V, Nunez-Farfan J PeerJ. 2021; 9:e10698.

PMID: 33777507 PMC: 7983856. DOI: 10.7717/peerj.10698.

The role of lateral and vertical herkogamy in the divergence of the blue- and red-flowered lineages of Lysimachia arvensis.

Jimenez-Lopez F, Ortiz P, Talavera M, Pannell J, Arista M Ann Bot. 2020; 125(7):1127-1135.

PMID: 32185392 PMC: 7262470. DOI: 10.1093/aob/mcaa047.

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