Fig. 5From: Exogenous auxin regulates multi-metabolic network and embryo development, controlling seed secondary dormancy and germination in Nicotiana tabacum L.Endogenous ABA (a-c), GA1+3 (d-f) and IAA (g-i) hormones’ content of tobacco seed imbibed in supplementation IAA solution or ddH2O 24 h or untreated and then germinated on filter paper beds 144 h. Subscript 10, 100, 1000 indicate the concentration gradientsBack to article page