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Table 2 Flower responses to ethylene exposure in C. medium, C. formanekiana and C. formanekiana × C. medium hybrids. Plants were exposed to concentrations of 0 or 5 μl · L−1 ethylene for 72 h. Flower responses were grouped in three categories (no senescence, signs of senescence and complete senescence). Data are in % and presented as means ± SE (n = 2, except Cm line 1; n = 4). Values with same letters within treatments in same response are not significantly different (P > 0.05)

From: A natural frameshift mutation in Campanula EIL2 correlates with ethylene insensitivity in flowers

Species/hybrid No senescence Signs of senescence Complete senescence
  0 μl · L−1 ethylene, 72 h   
C. formanekiana 87 ± 4.7 a 13 ± 4.7d 0.0 ± 0.0a
C. medium line 11 3.3 ± 2.9d 97 ± 2.9 a 0.0 ± 0.0a
C. medium line 21 53 ± 19 ab 47 ± 19cd 0.0 ± 0.0 a
Hybrid A 53 ± 0.0 ab 47 ± 0.0cd 0.0 ± 0.0 a
Hybrid B 17 ± 2.4bcd 83 ± 2.4 ab 0.0 ± 0.0 a
Hybrid C 40 ± 4.7bc 60 ± 4.7bc 0.0 ± 0.0 a
Hybrid D 10 ± 7.1cd 90 ± 7.1 ab 0.0 ± 0.0 a
Hybrid E 3.3 ± 2.4cd 97 ± 2.4 ab 0.0 ± 0.0 a
  5 μl · L−1 ethylene, 72 h   
C. formanekiana 0.0 ± 0.0 a 0.0 ± 0.0c 100 ± 0.0 a
C. medium line 11 0.0 ± 0.0 a 95 ± 4.3 a 5.0 ± 4.3c
C. medium line 21 0.0 ± 0.0 a 100 ± 0.0 a 0.0 ± 0.0c
Hybrid A 0.0 ± 0.0 a 13 ± 9.4c 87 ± 9.4 a
Hybrid B 0.0 ± 0.0 a 3.3 ± 2.4c 97 ± 2.4 a
Hybrid C 0.0 ± 0.0 a 0.0 ± 0.0c 100 ± 0.0 a
Hybrid D 0.0 ± 0.0 a 10 ± 7.1c 90 ± 7.1 a
Hybrid E 0.0 ± 0.0 a 43 ± 7.1b 57 ± 7.1b
  1. 1 C. medium breeding lines 1 (Sweet Mee®) and 2