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Table 1.

Morphometrical variables of the glandular trichomes of Roridula gorgonias

Trichome type
VariableLong, tentacle-shapedMedium, capitateShort, capitateStatistics
Stalk length (mm), Is 4.17a (3.299–5.024) 1.37b (0.994–2.406) 0.40c (0.312–0.726) H2,29=25.812, P≤0.010, Tukey, P<0.05 
Base width (mm), Wtb 0.16a±0.021 0.10b±0.015 0.10b±0.015 F2,29=29.938, P≤0.001, Tukey, P<0.05 
Tip width (mm), Wtt 0.08a±0.005 0.05b±0.009 0.08b±0.010 F2,29=52.724, P≤0.010, Tukey, P<0.05 
Aspect ratio, Is:Wmean(tb,tt) 36.06a±3.517 20.09b±4.068 4.82c±1.409 F2,29=236.885, P≤0.001, Tukey, P≤0.05 
Length of glandular head (mm), Ig 0.33a±0.030 0.25b±0.063 0.29a,b±0.056 F2,29=6.189, P≤0.006, Tukey, P<0.05 
Width of glandular head (mm), Wg 0.17a (0.133–0.193) 0.13a (0.106–0.209) 0.22b (0.177–0.339) H2,29=19.977, P≤0.001, Tukey, P<0.05 
Trichome type
VariableLong, tentacle-shapedMedium, capitateShort, capitateStatistics
Stalk length (mm), Is 4.17a (3.299–5.024) 1.37b (0.994–2.406) 0.40c (0.312–0.726) H2,29=25.812, P≤0.010, Tukey, P<0.05 
Base width (mm), Wtb 0.16a±0.021 0.10b±0.015 0.10b±0.015 F2,29=29.938, P≤0.001, Tukey, P<0.05 
Tip width (mm), Wtt 0.08a±0.005 0.05b±0.009 0.08b±0.010 F2,29=52.724, P≤0.010, Tukey, P<0.05 
Aspect ratio, Is:Wmean(tb,tt) 36.06a±3.517 20.09b±4.068 4.82c±1.409 F2,29=236.885, P≤0.001, Tukey, P≤0.05 
Length of glandular head (mm), Ig 0.33a±0.030 0.25b±0.063 0.29a,b±0.056 F2,29=6.189, P≤0.006, Tukey, P<0.05 
Width of glandular head (mm), Wg 0.17a (0.133–0.193) 0.13a (0.106–0.209) 0.22b (0.177–0.339) H2,29=19.977, P≤0.001, Tukey, P<0.05 

Median (minimum–maximum) for not-normally distributed data and means± s.d. for normally distributed data are presented. Different letters indicate statistical differences between values in the line. F,statistic value of one-way ANOVA. H, statistic value of Kruskal–Wallis one-way ANOVA on ranks. See Fig. 3B for definition of measured parameters

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