Table 4.

HPLC analysis of phenolic acids (mg g⁻¹ DM) in leaves of the examined accessions of Parthenium argentatum harvested at 30 (winter) or 33 months (spring) after transplanting. (Means ± SD, n = 3, Fisher’s test).

	Neochlorogenic Acid			Chlorogenic Acid			Cryptochlorogenic Acid			Isovanillic Acid			3,5-DCQ [1]
Retention Time (min)	9.46			11.27			11.57			14.1			24.4
	Winter	Spring		Winter	Spring		Winter	Spring		Winter	Spring		Winter	Spring
AZ-1	174.8 ± 7.9b	124.9 ± 3.8c	*	33.7 ± 3.5	38.6 ± 3.3b	ns	0.8 ± 0.07	0.93 ± 0.2b	ns	0.5 ± 0.05b	0.4 ± 0.1b	ns	13.9 ± 1.6b	12.2 ± 0.2a	ns
AZ-2	127.9 ± 5.6a	135.8 ± 10.2c	ns	31.6 ± 4.1	41.1 ± 2.2b	ns	0.9 ± 0.05	0.95 ± 0.04b	ns	0.7 ± 0.04b	0.51 ± 0.04b	ns	8.3 ± 1.3a	14.3 ± 0.7ab	*
P803	164.5 ± 11.7b	62.5 ± 0.1a	*	33.7 ± 2.5	28.6 ± 0.1a	ns	0.8 ± 0.03	0.5 ± 0.0a	*	0.3 ± 0.01a	0.3 ± 0.08a	ns	20.7 ± 1.7c	19.4 ± 0.3c	ns
11591	125.4 ± 6.1a	111.2 ± 12.2b	ns	35.1 ± 3.4	38.8 ± 2.1b	ns	0.7 ± 0.09	0.9 ± 0.02b	ns	0.6 ± 0.1b	0.4 ± 0.03b	ns	11.1 ± 0.4a	10.3 ± 0.5a	ns
Avg.	128.4			35.2			0.8			0.5			13.8
G × H	***			*			**			ns			***

^[1] 3,5 DCQ: 3,5-Di-caffeoylquinic acid. In the columns of each harvest (H) time (winter and spring), means followed by the same letter are not significantly different at p ≤ 0.05. In the rows, least significant differences test indicates harvest time effect on each examined accession of Parthenium argentatum. G × H: interaction between genotype and season of harvest; ns, not significant; *** p ≤ 0.0001, ** p ≤ 0.001, * p ≤ 0.05.