CELL WALL INFLUENCE ON THE QUALITY OF VARIOUS CROPS ANALYSED HISTOCHEMICALLY
Cell walls support the structure of plant organs which constitute many different agricultural crops. Cellular changes affect heavily cell walls. This has been recognized since long time, but its analysis is usually performed in a chemical way, with little or no regard to the histological location of components, Several investigations performed in this Institute, on the opposite, have shown the influence of such variations on the quality of crops: table grape, which is crispier and less soft than wine grape is correspondingly poorer of pectins in the cell wall. In nectarine cell walls, the decrease of pectins is parallel to the advancing of ripening and increasing softness of the fruit. In citrus hesperidia, the creasing of albedo appears to be strictly related to a decrease of cell wall pectins beyond a critical level. Vase life length of cut carnation flowers is also strictly related to the content of pectins in petal cell walls. The above mentioned cellular data have been investigated photometrically after proper enzymatic and chemical extractions, of the slices, followed by staining with periodic acid Schiff (P.A.S.), which results in a magenta staining of polysaccharides.
JONA, R. (1983). CELL WALL INFLUENCE ON THE QUALITY OF VARIOUS CROPS ANALYSED HISTOCHEMICALLY. Acta Hortic. 138, 247-254