Fig. 1
Effects of Bacillus thuringiensis (Bt) gene on the symptoms of potassium (K) deficiency in the youngest fully expanded leaf (the fourth leaf from apex) 61 days after sowing in the field (A), dry matter production of cotton plants in plots without (B) or with (C) K fertilizer (225 kg·hm−2 K2O). The available K+ in soil was 47.8 mg·kg−1. DAS: days after sowing. WT: wild type (Jihe 321); OE-29317 and OE-29312: transgenic Bt lines