Effect of different pollination treatments of Berberis microphylla G. Forst, a Patagonian barberry

S RADICE; M ARENA

Murcia

Workshop; II International Workshop on Floral Biology and S-Incompatibility in Fruit Species; 2016

International Society for Horticultural Science

Calafate (Berberismicrophylla G. Forst) grows on Tierra del Fuego in extreme climates wherelow temperatures and strong winds prevail throughout the year. Due to these conditions aphidsdo not survive during the flowering season of this species. Some syrphids were observed atanthesis collecting nectar. On the other hand, although the disposition of floral pieces, humidstigma and retractable stamens could suggest that the species is self-compatible, results ofcontrolled treatments of self- and cross-pollination compared with those after open-pollinationperformed during three different periods (2010, 2011 and 2014), do not support thishypothesis. Thus, self pollination resulted only in pollen germination on the stigmas but thepollen tubes were not able to reach the ovules.