Botanical and anatomical studies on tabernaemontana coronaria (crape jasmine)‎ plants

الملخص EN

A pot experimental study was carried out during the season of 2019/2020.

The experiment was a factorial involving 3 factors (1) H humic acid H₀ and H₁ added to soil at 0 and 2 g L^-1; (2) Boric acid spray B: B₀, B₁ and B₂ solutions of 0, 2 and 4 mg L^-1 respectively (3) PP₃₃₃ Paclobutrazol P₀, P₁ and P₂ foliar solution of 0, 20 and 40 mg L^-1 respectively (18 treatments 2H x3Bx3 PP₃₃₃).

The heaviest dry weights of leaves/plant was gained by H and 20 ppm pp < sub>333-sprayed plants.

Applied treatments, particularly PP₃₃₃ at 20, 40 ppm and B at 2 mg L^-1, among these anatomical features were the most important ones, i.

e.

, thickness of leaf midrib, length and width of vascular bundle, phloem and xylem tissues and number of xylem vessels in vascular bundle as well as the leaf blade thickness.