Study of the Effect of Pretreatment of Corms by Different Concentrations of Gibberellic Acid and at Different Periods on the Growth, Flowering, and Quality of Saffron in Eastern Morocco

Table 2

Effect of different GA₃ concentrations and duration of application on flowering rate, number of flowers, and stigmata yield. Values with the same letter in each application period in the column are not significantly different (); ns: not significant; significant at 5%; significant at 1%; significant at 1‰.

Duration of application	Treatment GA3	Flowering rate (day 1)		Number of flowers (size)		Yield in stigmas (g/1 m^2)
		2017	2018	2017	2018	2017	2018
Before planting	Control	1.75d	2.15d	1.49d	1.88c	0.28c	1.24c
	25 ppm	1.98c	2.67b	1.73d	1.82c	0.23c	0.57d
	50 ppm	1.36e	2.46 cd	1.87b	2.33b	0.34b	1.47c
	100 ppm	2.70a	3.21bc	2.30a	2.35b	1.31a	1.87b
	200 ppm	2.36b	3.85a	1.93b	2.71a	1.22a	2.03a
June	Control	1.48 cd	2.00d	1.56b	1.61c	0.30b	0.33bc
	25 ppm	1.34d	2.18c	1.44bc	1.56c	0.25b	0.27c
	50 ppm	2.08a	2.52b	1.23c	2.11b	0.18c	0.57b
	100 ppm	1.89b	2.44b	2.04a	2.32a	0.84a	1.00a
	200 ppm	2.17a	3.20a	1.51b	2.87ab	0.27b	0.35bc
March	Control	1.82a	2.35d	1.39e	2.30c	0.41d	0.79d
	25 ppm	1.65c	1.26e	1.87d	2.21c	0.36d	0.64d
	50 ppm	1.83a	1.55c	2.14c	2.65bc	1.10c	1.23c
	100 ppm	1.79ab	2.65a	2.54b	2.88b	1.87b	1.89b
	200 ppm	1.72b	2.11b	2.98a	3.12a	2.14a	2.20a
Source of variation	Treatment	0.604	5.067	2.623	2.195	4.307	8.022
	Period	1.840	5.969	3.801	6.447	9.314	7.817
	T ∗ P	3.149	4.183	2.664	0.265ns	3.871	2.607