Table 7.

Effect of foliar application of putrescine on anions (g kg⁻¹ FW) in younger leaves of the cauliflower cv. Moonshine at different ration of NO₃⁻/NH₄⁺ and temperatures.

Temperature	NO3−/NH4+		Chloride	Nitrate	Phosphate	Sulphate
Ambient T	100/0	No Put	1.03 ± 0.1	7.36 ± 0.3	7.78 ± 0.2 h	6.87 ± 0.1 g
		With Put	1.43 ± 0.1 a	13.81 ± 0.5	11.07 ± 0.1 b	10.05 ± 0.1 bc
	80/20	No Put	1.06 ± 0.1	6.44 ± 0.2	8.28 ± 0.2 g	7.21 ± 0.1 g
		With Put	1.47 ± 0.1 a	12.23 ± 0.5	11.20 ± 0.1 ab	10.22 ± 0.1 ab
	50/50	No Put	1.12 ± 0.1	5.73 ± 0.1	9.75 ± 0.4 f	7.76 ± 0.3 f
		With Put	1.49 ± 0.1 a	11.31 ± 0.1	11.49 ± 0.1 a	10.58 ± 0.1 a
High T	100/0	No Put	0.41 ± 0.1 e	5.25 ± 0.1	3.01 ± 0.3 k	4.25 ± 0.1 j
		With Put	1.17 ± 0.1 c	10.80 ± 0.2	10.14 ± 0.1 e	8.41 ± 0.1 e
	80/20	No Put	0.85 ± 0.1 d	0.34 ± 0.1	4.70 ± 0.1 j	5.43 ± 0.4 i
		With Put	1.30 ± 0.1 b	9.60 ± 0.3	10.51 ± 0.1 de	9.26 ± 0.2 d
	50/50	No Put	0.91 ± 0.1 d	0.11 ± 0.1	5.57 ± 0.4 i	6.25 ± 0.1 h
		With Put	1.37 ± 0.1 b	8.56 ± 0.3	10.64 ± 0.1 c	9.76 ± 0.1 c
Main effects			***	***	***	***
Temperature (T)			***	***	***	***
Putrescine (Put)			***	***	***	***
NO3−/NH4+			***	***	***	***
T X Put			***	***	***	***
T X NO3−/NH4+			***	***	***	***
Put X NO3−/NH4			***	***	***	**
T X Put X NO3−/NH4+			***	***	**	ns

Different small letters within a column indicate significant differences among different treatments of putrescine. treatments with different NO₃⁻/NH₄⁺ ratio and temperatures (p = 0.05. Tukey test). n = 5, ±S.E. Analysis of variance: ns. not significant; ** p ≤ 0.005; *** p ≤ 0.001.