Identification of Xylem Occlusions Occurring in Cut Clematis (Clematis L., fam. Ranunculaceae Juss.) Stems during Their Vase Life

Table 1

Histological tests used for detection of occlusions in Clematis stems.

Type of reaction	Color of product	Detection target
Periodic acid-Schiff reaction (PAS) [36]	Red	Aldehydes are created by oxidative cleavage of saccharides with H6IO5. Coloration is produced by the reaction
Bradford reagent [37]	Blue	Proteins
Azur B [38]	Blue	Lignins
Phloroglucinol-HCL [39]	Red	Lignins
Sudan IV [40]	Orange	Suberins