α-TOCOPHEROL REDUCED ENVIRONMENTAL STRESS AND IMPROVED FRUIT QUALITY

The effect of -tocopherol treatment has been studied in plants exposed to oxidative stress.
For inducing a defined amount of stress the herbicide paraquat was used.
An -tocopherol pre-treatment of plants significantly reduced paraquat-induced injury.
This was documented in bean and apple leaves by chlorophyll fluorescence measurements, quantification of necrotic lesions and determination of the antioxidative capacity in lipophilic and hydrophilic leaf extracts.
In field experiments a significant effect of repeated -tocopherol treatments against Venturia inaequalis was established in ‘Jonagold’ and ‘Elstar’ trees.
Besides, fruit colour formation was improved.

II Workshop on Pome Fruit

M. Schmitz, G. Noga

Phaseolus vulgaris, oxidative stress, paraquat, fruit colour, chlorophyll fluorescence, apple scab

https://doi.org/10.17660/ActaHortic.1998.466.15