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1 September 2000 Variation in Gender and Flower-Size Dimorphism in the Dioecious Tree Dombeya ciliata, an Endemic to La Réunion Island
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Abstract
The genus Dombeya is an important component of tropical forests in west Africa, Madagascar, and the Mascarene islands, but little is known about the reproductive biology of its members. In this study, we quantified gender variation and flower-size variation in three populations of the dioecious tree Dombeya ciliata, an endemic of La Réunion Island (Indian Ocean). Variation among the three populations was observed for three characters. First, the high elevation population had strict males and females, whereas in the two low elevation populations, males were inconstant, with > 50 percent of the males set a small number of fruit. Second, females showed greater seed production at high elevation. Third, flower-size dimorphism was greater at high elevation because male flowers were larger than female flowers.
Laurence Humeau, Thierry Pailler and John D. Thompson "Variation in Gender and Flower-Size Dimorphism in the Dioecious Tree Dombeya ciliata, an Endemic to La Réunion Island1," BIOTROPICA 32(3), (1 September 2000). https://doi.org/10.1646/0006-3606(2000)032[0463:VIGAFS]2.0.CO;2
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