Table 2.

The mean comparison of the putrescine and Ca nanoparticle (CaNP) effect on saffron reproductive characters

Traits	Source of variation	Degrees of freedom	Sum of squares	Mean square	F-value
Chlorophyll a	Putrescine	4	0.059	0.015**	5.22
	CaNP	4	0.058	0.014**	5.13
	Putrescine × CaNP	16	1.163	0.01**	3.61
	Error	50	0.1410	0.003	0.003
Chlorophyll b	Putrescine	4	0.0208	0.052**	4.47
	CaNP	4	0.0253	0.06**	5.43
	Putrescine × CaNP	16	0.558	0.035**	3.003
	Error	50	0.58	0.012	0.012
Total chlorophyll	Putrescine	4	0.472	0.118**	4.95
	CaNP	4	0.542	0.13**	5.69
	Putrescine × CaNP	16	1.264	0.079**	3.32
	Error	50	1.18	0.024	0.024
Carotenoid	Putrescine	4	0.015	0.004**	6.15
	CaNP	4	0.024	0.006**	10.19
	Putrescine × CaNP	16	0.059	0.004**	6.20
	Error	50	0.029	0.001	0.001

*, **Significant effect and ns shows no significance effect at probability level of 5% and 1%