La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Pollination biology and breeding system of Acacia senegal
Auteurs :	Rajesh Tandon, Auteur ; K. R. Shivanna, Auteur ; H. Y. Mohan Ram, Auteur
Type de document :	Article
Dans :	Botanical Journal of the Linnean Society (135(3) 2001-03-01)
Article en page(s) :	251-262
Résumé :	Phenology, pollination biology and breeding system were investigated in three populations of Acacia senegal located in Delhi and Rajasthan. Flowers emit a mild fragrance and produce a minute quantity of nectar. The stigma is wet non-papillate, cup-shaped and generally accommodates one polyad with 16 pollen grains. The style is solid. The mass effect created by the brush type of blossoms attracts a wide variety of insects, of which the giant Asian honeybee, Apis dorsata, is the effective pollinator. Manual in vivo pollination studies have shown that the species is self-incompatible. Self-incompatibility appears to operate inside the embryo sac. Under natural conditions fruit set is as low as 0.36%. Insufficient pollination is the main cause of low fruit set. Manual xenogamous pollinations substantially improve fruit set to 30%
En ligne :	https://doi.org/10.1111/j.1095-8339.2001.tb01094.x

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