Effect of Methyl Jasmonate on Phytoalexins Biosynthesis and Induced Disease Resistance to Fusarium oxysporum f. sp. Vasinfectum in Cotton (Gossypium hirsutum L.)

Table 4

Effect of methyl jasmonate treatment on chlorophyll content of cotton leaves after treatment and fungus inoculation.

Incubation time (day)	Chlorophyll content (mg/g FW)
	MeJA/infected plants	No-MeJA/infected plants	No-MeJA/no-infected plants
0	0.35 ± 0.01^a	0.37 ± 0.02^a	0.33 ± 0.01^a
12	0.33 ± 0.01^a	0.28 ± 0.01^b	0.54 ± 0.03^e
20	0.69 ± 0.02^b	0.22 ± 0.01^c	0.77 ± 0.02^b
30	1.10 ± 0.04^c	0.15 ± 0.01^e	0.99 ± 0.06^c
38	1.32 ± 0.09^d	0.05 ± 0.00^f	1.27 ± 0.08^d

FOV: Fusarium oxysporum f. sp. vasinfectum; FW: fresh weight; leaves were treated with 5.0 mM of MeJA, inoculated at 72 h (day 0) with FOV, and incubated at 25°C for 38 days. data are expressed as mean of three replicates; within row and column, numbers followed by a different letter are significantly different according to Duncan’s multiple range test at P = 0.05 level; MeJA: methyl jasmonate.