Table 1 Equations referring to Fig. 1(a) and (b).

From: IBA and melatonin increase trigonelline and caffeine during the induction and initiation of adventitious roots in Coffea arabica L. cuttings

Treatment

Equation

p-value

Percentage of rooted cuttings

  

 Control

ŷ =  − 0.54 + 87.73/(1 + exp(− (x − 50.56)/ 2.09))0.21 R2 = 0.99

0.0001

 M21

ŷ =  − 1.81 + 95.59/(1 + exp(− (x − 53.07)/ 4.04))0.31 R2 = 0.99

0.0001

 M43

ŷ =  − 4.05 + 98.60/(1 + exp(− (x − 55.95)/ 1.55))0.09 R2 = 0.99

0.0001

 IBA

ŷ =  − 2.98 + 98.09/(1 + exp(− (x − 44.52)/ 4.42))0.37 R2 = 0.99

0.0001

Relative growth rate

 Control

ŷ =  − 94.17 + 96.14(1 − exp(− 0.0976x)) R2 = 0.99

0.0001

 M21

ŷ =  − 33.25 + 35.45(1 − exp(− 0.0697x)) R2 = 0.99

0.0001

 M43

ŷ =  − 14.37 + 16.70(1 − exp(− 0.0494x)) R2 = 0.99

0.0001

 IBA

ŷ =  − 265.74 + 267.75(1 − exp(− 0.1227x)) R2 = 0.99

0.0001