L’UTILISATION DES EXTRAITS AQUEUX DES RACINES DE QUELQUES PLANTES SUR LA MISE EN EVIDENCE DE LA FLORE POTENTIELLE DES PERIMETRES AGRICOLES ABANDONNES

Abstract

This study focuses on the detection of the soil seed bank of Hassi Ben Abdellah's abandoned pivots (Ouargla) by the use of aqueous extracts of cultivated plant (Triticum durum and Hordeum sativum) and spontaneous (Moltkiopsis ciliata and Oudneya africana ). The identification of the potential flora of the seed bank. Showed that the flora that characterizes this bank of the seeds is of 06 vegetable species repaired on 03 families. The soil seed bank potential estimate was made by the semi-direct method. The density and the wealth vary from a treatment other on registré the strongest density and richness on the level of witness respectively 05 individuals, 04 species. The total wealth is of 05 species for the whole of the treatments the strongest is obtained by Oudneya africana. There is a specialization for Triticum durum, which has shown that poaceae (Bromus madritensis and Bromus rubens), as well as spontaneous species of Moltkiopsis ciliata, recorded 02 botanical families Poaceae (Bromus madritensis) and Amaranthaceae (Chenopodium mural).