Table 4 Gas exchange characteristics of Bt and non-Bt cotton cultivars grown with different levels and methods of B application

4.73^f

5.64^fg

0.13^f

0.17^e

2.43^f

2.73^e

7.96^c

13.18^b

0.15^ef

0.21^c

3.20^e

5.64^ab

8.22^c

15.19^a

0.20^de

0.24^b

4.07^d

6.05^a

6.16^de

10.34^d

0.20^de

0.22^c

5.01^c

6.28^a

7.09^d

13.30^b

0.26^c

0.19^d

4.99^c

5.76^ab

7.98^c

11.79^c

0.31^b

0.18^de

5.13^bc

5.15^b

9.18^b

11.42^c

0.24^cd

0.18^de

6.17^ab

6.44^a

10.85^a

9.16^de

0.19^de

0.23^bc

5.73^b

6.23^a

10.95^a

12.28^bc

0.19^de

0.27^a

6.07^ab

6.23^a

11.04^a

11.04^cd

0.19^de

0.19^d

5.27^bc

5.27^b

9.25^b

9.80^d

0.37^a

0.19^d

6.75^a

4.71^bc

9.39^b

9.03^de

0.31^b

0.25^ab

5.96^ab

6.11^a