Albert, Thierry
Raspé, Olivier
[UCL]
Jacquemart, Anne-Laure
[UCL]
Abstract Clonal growth, which allows the multiplication of flowering shoots of the same genet, can lead to a large floral display and may thus increase the rate of selfing through geitonogamy as a consequence of an increase in the number of successively visited flowers. The aim of the present research was to analyse the combined effect of the diversity and intermingling of clones on the rate of selfing in Vaccinium myrtillus. Four mother plants were selected within patches characterised by contrasting clonal structure (low versus high number and intermingling of clones). The selfing rate was significantly lower for plants situated within patches characterised by a high number of intermingled clones (3%) than for plants situated in patches with a low number of clones (50%). Therefore, for this species suffering from inbreeding depression, an increase in the number or the intermingling of the clones could reduce the rate and the cost of geitonogamy and allow a large floral display to attract pollinators. We also found that the main pollinators, bumblebee queens, presented a foraging behaviour favouring geitonogamy, as their successive visits to flowers were quite short (89% of flights were 40 cm or less).
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Bibliographic reference |
Albert, Thierry ; Raspé, Olivier ; Jacquemart, Anne-Laure. Influence of clonal growth on selfing rate in Vaccinium myrtillus L.. In: Plant Biology (Stuttgart, Germany), Vol. 10, no. 5, p. 643-649 (2008) |
Permanent URL |
http://hdl.handle.net/2078.1/14194 |