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 4

Effect of different GA₃ concentrations and duration of application on leaf emergence rate, leaf length, and leaf area. 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	Leaf appearance rate (day 1)		Sheet length (cm)		Sheet area (cm^2)
		2017	2018	2017	2018	2017	2018
Before planting	Control	1.33e	1.37d	25.6c	23.2d	91.2b	83.1d
	25 ppm	1.67d	1.89d	29.7bc	25.6c	87.6b	90.8d
	50 ppm	2.43c	2.64c	25.2c	25.9c	108.4b	130c
	100 ppm	3.07b	3.71b	32.5b	30.3b	139a	149.6b
	200 ppm	3.83a	4.26a	36.2a	38.7a	122.4a	164.5a
June	Control	1.12c	1.44c	26.8a	25.4b	71.5c	86.9d
	25 ppm	1.27c	1.57c	20.9b	20.5c	111.8b	130.2c
	50 ppm	2.88b	2.62b	21.1b	22.3c	128.4ab	140.6b
	100 ppm	2.71b	3.10ab	22.7ab	25.7b	139.1a	178.3a
	200 ppm	3.31a	3.76a	26.5a	30.2a	127.3ab	158.8b
March	Control	1.20b	1.37c	22.4c	23.1b	106.3bc	120bc
	25 ppm	1.12b	1.23c	23.9b	23.5b	89.1c	100.7c
	50 ppm	1.55ab	1.81b	23.4b	22.2b	118.4b	126.2b
	100 ppm	1.67a	1.73b	23.2b	23.9b	130.9a	122b
	200 ppm	1.82a	2.04a	23a	27.4a	115.3b	157.8a
Source of variation	Treatment	19.83	24.14	175.9	534.7	179.2	519
	Period	8.77	10.14	428.7	171	519	179.8
	T ∗ P	4.05	5.36	150ns	135.2ns	976	140.2