دراسة تأثير المكافحة البيولوجية والمعاملة الهرمونية على بعض أمراض أصناف الحمص (Cicer arietinum L.)

Abstract

Chickpea (Cicer arietinum L.) occupies an important place among food pulses for being an essential source of protein in many countries of the world or locally in Algeria. Many obstacles face the cultivation of chickpea in Algeria, starting from the retreat of cultivation to its production. Recently, the cultivated areas have witnessed a noticeable retreat, as a result of many difficulties, especially those related to the biotic stress including Fusariose resulting from the injury of Fusarium oxysporum. This study was carried out in order to evaluated capability of some antagonists strains in vitro as well as the role of the Salicylic acid hormone in the systemic acquired resistance. This study shows the efficiency of both Pythium and Trichoderma through the use of direct confrontation. The results of direct confrontation show a percent inhibition raining from 42.09 to 45.6 % respectively, through the mechanisms by these fungi resistance toward the pathogenic fungi. Additionally, the results of the study show that the treatment of two genotype injured plant of Chickpea (GHAB 5, FLIP 90-13C) by the pathogenic Fungi, with salicylic acid gives the start signal in the systemic acquired resistance which results in the reduction of the disease whether through the number of the infected leaf and through improving the indicators growth especially with the concentrations 022 and 250mg/L.