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Table 2 Whitefly nymphal and adult counts (Mean ± SEM) in transgenic and control cotton lines under no-choice conditions during 2021 and 2022

From: Evaluation of transgenic cotton lines expressing an insecticidal fern protein against whitefly, Bemisia tabaci (Gennadius)

Analyzed lines

Nymphal counts

Adult counts

2021

2022

2021

2022

Nymph count (per 3 leaves)

Reduction over non-event /%

Nymph (per 3 leaves)

Reduction over non-event /%

Adult count (per 3 leaves)

Reduction over non-event /%

Adult count (per 3 leaves)

Reduction over non-event /%

Transgenic line A

49.71 ± 0.94D

(7.05 ± 0.07)

35.68

43.18 ± 1.26E

(6.57 ± 0.10)

37.45

36.54 ± 1.33D

(6.04 ± 0.11)

16.90

33.05 ± 0.43D

(5.75 ± 0.04)

26.47

Transgenic line B

45.89 ± 0.40E

(6.77 ± 0.03)

40.63

42.55 ± 0.72E

(6.52 ± 0.06)

38.36

35.34 ± 1.43D

(5.94 ± 0.12)

19.63

34.19 ± 0.38D

(5.85 ± 0.03)

23.94

Transgenic line C

55.56 ± 1.18C

(7.45 ± 0.08)

28.11

45.45 ± 0.83D

(6.74 ± 0.06)

34.16

39.05 ± 0.67CD

(6.25 ± 0.05)

11.19

37.08 ± 0.69C

(6.09 ± 0.06)

17.51

Transgenic line D

56.66 ± 1.20C

(7.53 ± 0.08)

26.69

49.20 ± 0.74C

(7.01 ± 0.05)

28.73

35.17 ± 1.15D

(5.93 ± 0.10)

20.01

36.45 ± 0.66C

(6.04 ± 0.05)

18.91

Control line—Non-transgenic

77.29 ± 1.15B

(8.79 ± 0.07)

-

69.03 ± 0.45B

(8.31 ± 0.03)

-

43.97 ± 2.57AB

(6.63 ± 0.20)

-

44.95 ± 0.50B

(6.70 ± 0.04)

-

Control line—Resistant

53.57 ± 0.74C

(7.32 ± 0.05)

-

49.56 ± 0.25C

(7.04 ± 0.02)

-

42.05 ± 1.42BC

(6.48 ± 0.11)

-

43.89 ± 0.38B

(6.62 ± 0.03)

-

Control line—Susceptible

85.00 ± 2.56A

(9.22 ± 0.14)

-

76.10 ± 0.71A

(8.72 ± 0.04)

-

47.77 ± 0.84A

(6.91 ± 0.06)

-

51.75 ± 0.95A

(7.19 ± 0.07)

-

F value

132.15

 

246.15

 

10.51

 

131.53

 

P value for F test

 < 0.0001

 

 < 0.0001

 

 < 0.0001

 

 < 0.0001

 
  1. Note: Values followed by same letter are not significant at P =0.01
  2. Figures in parenthesis are square root transformed values