Mohd Sayeed AKHTAR, Uzma SHAKEEL, Zaki Anwar SIDDIQUI

Biocontrol of Fusarium wilt by Bacillus pumilus, Pseudomonas alcaligenes, and Rhizobium sp. on lentil

Mercimek büyümesinde Fusarium oxysporum f. sp. Lentis’ in neden olduğu solma (wilt) hastalığı üzerine Bacillus pumilus, Pseudomonas alcaligenes ve Rhizobium sp. türlerinin etkisi çalışılmıştır. F. oxysporum inokulasyonu önemli ölçüde solmaya neden olur, bitki büyümesini, pod sayısını azaltır ve nodülasyona neden olur. B. pumilus ile birlikte P. alcaligenes inokülasyonu ise bitki büyümesinde, pod sayısında ve nodülasyonda büyük artışa neden olur, rihizobakterlerle kök kolonizasyonu artar, tek başına inokülasyon ile mukayese edildiğinde Fusarium solması azalır. Rhizobium sp. bitki büyümesinde, pod sayısında, nodülasyon çok fazla artışa neden olur. B. pumilus ‘e göre solma oldukça azalır. B. pumilus ile birlikte P. alcaligenes ve Rhizobium sp.’ nin inokülasyonu bitki büyümesinde pod saysında, rihizobakterler ile kök kolinizasyonuda çok fazla artışa neden olur ve Fusarium ile inoküle edilmiş bitkilerde solmayı azaltır.

Mercimeklerdeki Fusarium solma hastalığının Bacillus pumilus, Pseudomonas alcaligenes ve Rhizobium sp. ile biyokontrolü

The present study examined the effects of Bacillus pumilus, Pseudomonas alcaligenes, and Rhizobium sp. on wilt disease caused by Fusarium oxysporum f. sp. lentis and on the growth of lentil. Inoculation with F. oxysporum caused significant wilting, and reduced plant growth, the number of pods, and nodulation. Inoculation with B. pumilus together with P. alcaligenes caused a greater increase in plant growth, number of pods, nodulation, and root colonization by rhizobacteria, and also reduced Fusarium wilting to a greater degree than did individual inoculation. Use of Rhizobium sp. resulted in a greater increase in plant growth, number of pods, and nodulation, and reduced wilting more than B. pumilus did. Combined application of B. pumilus and P. alcaligenes with Rhizobium sp. resulted in the greatest increase in plant growth, number of pods, nodulation, and root colonization by rhizobacteria, and also reduced wilting in Fusarium-inoculated plants.

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