ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Can copper be an elicitor?

Coulomb, C.; Lizzi, Y.; Coulomb, P. J.; Roggero, J. P.; Coulomb, P. O.; Agullon, O.;

Phytoma Year: 1998 Issue: No. 512 Pages: 41-46 Ref: 8 ref.

1998

บทคัดย่อ

Apart from its direct fungicidal action against grapevine mildew (Uncinula necator), copper has other effects, in particular against grey mould caused by Botrytis cinerea. Experiments were conducted to determine the effects of a late spray treatment, i.e. 21 days after harvest, with Bordeaux mixture and copper hydroxide on grape samples. Cytological examination showed that the cellular structure of fruit sprayed with copper treatments was slightly modified and was not infected, whereas the untreated samples were infected. Biochemical analysis showed that in the treated fruit, the level of composites which can be considered as defence reaction indicators was higher than in the untreated samples. Such indicators include peroxydasis, phenol, resveratrol and anthocyans. The results suggest that copper can help to elicit, or trigger, inherent plant defence mechanisms.