CONTRIBUTION OF AN F1 HYBRID IN THE ADAPTATION OF INDUSTRIAL TOMATO TO THE HYDROUS STRESS FROM THE QUALITATIVE AND QUANTITATIVE POINT OF VIEW

The dryness is one of the major parameters causing in the ground of physicochemical modifications and constitutes an obstacle with the growth of the plants and consequently the output of the cultures. Economic importance of industrial tomatoes in Algeria, and the problems encountered in its production led us to evaluate its behaviours, with the climatic variations (hydrous Stress) and pedological. For this purpose, two imported varieties of industrial tomatoes from the USA, one is a fixed variety (Rio-Grande) and the other is a hybrid F1(XP671) lately introduced in Algeria, were planted in two different zones, subjected to a hydrous stress dice L taken again of the seedlings (after road repair) until harvest for the El-karma station. Whereas for the El-kous station, the experimentation was carried out in parallel, in dryness, and in irrigated. Measurements and analyses were carried out with different stages phenologic of the plant to know the agronomic parameters, physico-chemical parameters and finally of the biochemical parameters. This study enabled us the preliminary results and to draw a definite approach to bring solutions to the problems arising from the dryness. It resort that the hybrid variety is more powerful, it will be able to ensure very high output when the environment conditions are gathered in a parallel direction with the controlled cultural techniques.