Fig. 6
From: Pollination success of Fraxinus excelsior L. in the context of ash dieback
Vitality of the ash trees in the study sites in 2018. Vitality of (a all investigated ash trees, which could be a pollen donor versus b all assigned potential fathers in the seed orchard and c all investigated ash trees, which could be a pollen donor versus d all assigned fathers in the floodplain forest (vitality score: 0 — dark green; 1 — light green; 2 — yellow; 3 — orange; 4 — red; tree stumps with unknown vitality — brown)