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- August 4, 2010
Heterostyly is widely distributed among the angiosperms, but detailed studies are limited to few taxonomic groups. Sánchez et al. (pp. 321–331) ascertain the presence of different stigma height polymorphisms among species of Nivenia, formerly considered either as monomorphic or distylous. Comparisons of the degree of reciprocity, pollen transfer and floral integration give results that are consistent with the hypothesis that pollinators are the main driving force behind the evolution of heterostyly.
EditorPatHeslopHarrison
16 years agoSuper talk on evolutionary transitions in pollination systems from Spencer Barrett, at the International Congress for Sexual Plant Reproduction in Bristol, this morning. This work, with particular models from tristylous, distylous and monomorphic Eichhornia (water hyacinths) , and from monoecious and dioecious Sagittaria. Careful analysis shows what happens at range edges – very different from the centres – and shows which strategies are dead ends, which one-way routes, and which might be evolutionarily most important. Spencer is one of the most regular contributors to Annals of Botany and has published much related work with us:
Ai-Min Li, Xiao-Qin Wu, Dian-Xiang Zhang, and Spencer C. H. Barrett Cryptic dioecy in Mussaenda pubescens (Rubiaceae): a species with stigma-height dimorphism
Ann. Bot., Advance Access published on July 19, 2010; doi: http://dx.doi.org/10.1093/aob/mcq146
Wind of change: new insights on the ecology and evolution of pollination and mating in wind-pollinated plants SPECIALIZATION AND GENERALIZATION IN PLANT-POLLINATOR INTERACTIONS:
Jannice Friedman and Spencer C. H. Barrett
Wind of change: new insights on the ecology and evolution of pollination and mating in wind-pollinated plants
Ann. Bot., June 2009; 103: 1515 – 1527.
http://dx.doi.org/10.1093/aob/mcp035
Modification of flower architecture during early stages in the evolution of self-fertilization :
Mario Vallejo-Marín and Spencer C. H. Barrett
Modification of flower architecture during early stages in the evolution of self-fertilization
Ann. Bot., April 2009; 103: 951 – 962.
http://dx.doi.org/10.1093/aob/mcp015
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