هدف البحث لدراسة تأثير البكتيريا Rhizobium leguminosarum في خفض الإصابة بمرض ذبول البندورة الوعائي الذي يسببه الفطر .Fusarium oxysporum f. sp. lycopersici أظهرت النتائج أن تلقيح نباتات البندورة بالبكتيريا Sacc.) Rhizobium leguminosarum) قد خفضت معنوياً شدة إصابة نباتات البندورة بالفطر F.oxysporum f .sp. lycopersici بنسبة 69.21%، و خفضت من طول التلون البني في الأوعية الخشبية للساق بنسبة 35.14%، كما زادت من طول النبات بنسبة 21.01%، و الوزن الرطب للمجموع الخضري و الجذري بنسبة 35.32% و 43.35% على التوالي، و زيادة عدد الثمار بنسبة 47.39% و وزنها بنسبة 32.48%.
This study was carried out to evaluate the effect of isolates of Rhizobium
leguminosarum in reducing infection of tomato with Fusarium oxysporum
f.sp.lycopersici,the causal agent of tomato wilt. The results demonstrated significant
reduced in severity disease of plants were inoculated with Rhizobium leguminosarum, the
rate reduced of disease severity was 69.21% and in length of browning was 35.14%.
Rhizobium leguminosarum increased of plant height with 21.01%, fresh weight of shoot
and root increased with 35.32% and 43.35% respectively,while increased the number of
fruit with 47.39% and its weight with 32.48%
References used
AKHTER,A.; HAGE-AHMED.K.; SOJA,G. and STEINKELLNER,S. Compost and biocharalter mycorrhization,tomato root exudation,and developmentof Fusarium oxysporumf.sp.lycopersici. Frontiers in Plant Science,Vol.6,2015,1-13
AKHTAR,M.S.; SHAKEEL,U. and SIDDIQUI,A.Z. Biocontrol of Fusarium wilt by Bacillus pumilus, Pseudomonas alcaligenes, and Rhizobium sp. on lentil. Turk J Biol , Vol.34,2010, 1-7
ARFAOUI,A.;SIFI,B;BOUDABOUS,A.;ELHADRAMI,I.andCHERIF,M. Identification of Rhizobium isolates possessing antagonistic activity against Fusarium oxysporum f.sp. ciceris, the causal agent of Fusarium wilt of chick. Journal of Plant Pathology, Vol.88,No.1,2006,67-75
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