Additional file 5: of Exogenous 2-(3,4-Dichlorophenoxy) triethylamine ameliorates the soil drought effect on nitrogen metabolism in maize during the pre-female inflorescence emergence stage

The tools used for the collection of bleeding sap. Cotton (A), centrifuge tube (B), scissors (C), plastic film (D), and deionized water (E). (JPG 471 kb)