Fluctuations in peroxidase and catalase activities of resistant and susceptible black gram (Vigna mungo (L.) Hepper) genotypes elicited by Bemisia tabaci (Gennadius) feeding

Figures & data

Table 3.B. tabaci eggs and red-eyed nymphs across different V. mungo genotypes in multiple-choice test under screen-house conditions

Genotype	*Mean ± SEM number of eggs per trifoliate leaf	* Mean ± SEM number of red-eyed nymphs per trifoliate leaf
KU 7-504	20.43 ± 1.79	52.67 ± 9.37
KU 7-505	20.00 ± 2.08	52.18 ± 9.83
KU 7-602	11.27 ± 0.61	16.31 ± 1.88
KU 7-605	10.89 ± 0.88	15.13 ± 2.36
KU 7-618	11.04 ± 0.81	15.88 ± 2.26
KU 99-20	3.87 ± 0.49	10.70 ± 2.08
IPU 02-043	11.24 ± 0.60	16.40 ± 1.78
NDU 5-7	4.19 ± 0.49	11.31 ± 1.79
Mash 1-1	13.27 ± 1.57	39.69 ± 7.67

* Mean of three replications at weekly intervals recorded over a period of five weeks. SEM, Standard error of mean.

Table 4.B. tabaci adult population across different V. mungo genotypes in multiple-choice test under screen-house conditions

Genotype	* Mean ± SEM adult whitefly population per trifoliate leaf			Mean ± SEM
	Upper canopy	Middle canopy	Lower canopy
KU 7-504	68.26 ± 2.77	69.53 ± 2.69	68.99 ± 2.91	68.93 ± 0.29
KU 7-505	68.63 ± 2.66	69.09 ± 2.81	68.63 ± 2.79	68.78 ± 0.12
KU 7-602	37.66 ± 2.86	37.76 ± 2.96	37.93 ± 9.26	37.78 ± 0.06
KU 7-605	37.99 ± 2.99	37.86 ± 2.89	37.73 ± 2.97	37.86 ± 0.06
KU 7-618	37.69 ± 2.85	38.52 ± 3.18	38.53 ± 2.89	38.25 ± 0.22
KU 99-20	13.83 ± 0.78	13.62 ± 0.64	13.39 ± 0.71	13.61 ± 0.10
IPU 02-043	40.33 ± 2.81	37.99 ± 2.79	38.43 ± 3.00	38.91 ± 0.58
NDU 5-7	13.23 ± 0.68	13.26 ± 0.75	13.92 ± 0.65	13.47 ± 0.18
Mash 1-1	51.96 ± 2.28	51.53 ± 2.38	52.02 ± 2.46	52.11 ± 0.14

* Mean of five replications (each replication represents population at weekly interval). SEM, Standard error of mean.

Figure 1. Peroxidase activity (30 DAS) in V. mungo leaves as influenced by B. tabaci feeding.

Figure 2. Peroxidase activity (50 DAS) in V. mungo leaves as influenced by B. tabaci feeding.

Figure 3. Specific activity of peroxidase in V. mungo leaves as influenced by B. tabaci feeding.

Figure 4. Catalase activity (30 DAS) in V. mungo leaves as influenced by B. tabaci feeding.

Figure 5. Catalase activity (50 DAS) in V. mungo leaves as influenced by B. tabaci feeding.

Figure 6. Specific activity of catalase in V. mungo leaves as influenced by B. tabaci feeding.

Table 5. Correlation of biochemical leaf characteristics of V. mungo with B. tabaci population

Biochemical character		Red-eyed nymphs		Adults
		r	R^2	r	R^2
Peroxidase	30 DAS	-0.70*	0.49	-0.87*	0.77
	50 DAS	-0.60*	0.37	-0.85*	0.72
Catalase	30 DAS	-0.60*	0.36	-0.82*	0.68
	50 DAS	-0.87*	0.76	-0.91*	0.83

* Significant at 1 per cent. R, Correlation coefficient; R², Coefficient of determination; DAS, Days after sowing.

Table 1.

Leaf injury grade	Symptoms
I	No damage
II	Appearance of yellow chlorotic spots
III	Starting of black sooty mold
IV	Severe blackening of leaves
V	Complete drying of leaves

Table 2.

Leaf injury grade	Symptoms	Score	Category/Reaction
I	No damage	< 1.00	Resistant (R)
II	Appearance of yellow chlorotic spots	1.01-1.50	Moderately Resistant (MR)
III	Starting of black sooty mold	1.51-2.50	Moderately Susceptible (MS)
IV	Severe blackening of leaves	2.51-3.50	Susceptible (S)
V	Complete drying of leaves	> 3.50	Highly Susceptible (HS)