Influence of conditions of illumination on infructescence at 9 rare species Orchidaceae of Preduralie

Dependence of percentage of fruitification from light exposure of habitats at 9 species from family Orchidaceae in territory of Preduralie is defined. It is established that the percentage of fruitification in more shined habitats above and fluctuates from 17 to 78. In the shaded habitats the percentage of fruitification is lowered, makes no more than 20 that is connected with a lack of pollinators. High enough indicator (more than 60 %) is observed for Neottia nidus-avis that is connected with self-pollination.