Botany online 1996-2004. No further update, only historical document of botanical science!

Longitudinal Section Through the Phloem of Cheiranthus cheiri (Brassicaceae)

Sieve tube without (S) and companion cells with nuclei (B). They are bordered by a parenchyma cell (P). The sieve tube contains sieve tube plastids (SP of the S-Type), mitochondria (M), endoplasmatic reticulum (ER) and P-proteins (P-P). The sieve plate (P1) is perforated by pores. (H.-D. BEHNKE, 1981)

© Peter v. Sengbusch - Impressum