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Annals of Botany 88: 139-144, 2001
© 2001 Annals of Botany Company

Breeding System Studies with Three Species of Anagallis(Primulaceae): Self-incompatibility and Reduced Female Fertility in A. monelli L.

P. E. Gibbs+ and S. Talavera

Plant Science Laboratories, School of Biology, The University, St Andrews, KY16 9AL, UK Departamento de Biología Vegetal y Ecología, Apto. 1095, Universidad de Sevilla, 41080, Sevilla, Spain

Received: 19 January 2001 ; Returned for revision: 20 February 2001 . Accepted: 30 March 2001

The pollination biology, fruit set and breeding system of Anagallis arvensis, A. parviflora andA. monelli were studied in the field and glasshouse. No pollinators were observed at flowers of A. arvensis andA. parviflora , and hand pollinations indicated that these species are self-compatible taxa which automatically self-pollinate as the petals close at the end of the first day. Flowers of A. monelli were visited by several small halictid bee pollinators and a field diallel with seven plants indicated that this species is self-incompatible. Fruit set inA. monelli is correlated with distance to the nearest conspecific neighbour such that beyond 2 m fruit set is relatively low. The diallel cross, and also an analysis of the number of seeds per capsule for all plants located within 2 m of a conspecific, indicated that about 18% of the population of A. monelli showed low female fecundity and were thus ‘male dominant’ individuals. Copyright 2001 Annals of Botany Company

Primulaceae, Anagallis arvensis, Anagallis parviflora, Anagallis monelli, Mediterranean, breeding system, self-incompatibility, fruit set, female sterility


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