Self-Compatibility and Reproductive Success of Oenothera drummondii subsp. drummondii: Is It Similar between Native and Non-Native Populations?

The mating system of plants widely distributed can change in native range but also non-native habitats. Oenothera drummondii, to the coastal dunes Gulf Mexico, has been introduced Europe, Africa, Asia and Oceania. Hand self- cross-pollination were performed determine compatibility compare fruit set, weight, seed set germination characteristics from natives non-natives populations a comprehensive integral reproductive success index (IRSI) was built. drummondii exhibited high self-compatibility mixed systems all populations. Characteristics fruits seeds varied within between some had positive clinal variation range. IRSI sensitive changes final both cross-pollination, showing differences Differences ranges suggest occurrence distinct selection factors. O. suggests it take advantage local visitors range, provide advantages for establishment at sites giving opportunity interact with flower visitors.