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EFFECT OF ENDOPHYTIC BACTERIA FROM SOYBEAN ROOT NODULES ON SOYBEAN CYST NEMATODE AND PATHOGENS OF SOYBEAN ROOT ROT

Lijie Chen

Open publisher page 2 citations

Abstract

In order to study the effect of endophtic bacteria Snb2,Bacillus sp.,from soybean root on Heterodera glycines and soybean root rot pathogens,treatment J2 and cyst with bacterial suspension and Dual-culture tests to soybean root rot pathogens were developed.The result showed that the bacterial suspension had effect on the hatching of cyst and the rate of inhibition was 94.9%;after 96 h,the mortality of J2 was 66.7% treated with bacterial suspension;strain Snb2 had strong anti-fungal activity to 4 soybean root rot pathogens,especially to Fusarium oxysporum,Fusarium solani,the inhibition zone was 10 mm and lasted almost ten days;after treated with bacterial,it apparently promoted the growth of soybean seedling,the length between cotyledon and root tip was 9.1±4.54 cm,15.19% higher than that of CK;In potted trial,bacterial suspension showed obvious efficency against soybean cyst nematode and control efficercy reached 62.5%.

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What this paper is about

In order to study the effect of endophtic bacteria Snb2,Bacillus sp.,from soybean root on Heterodera glycines and soybean root rot pathogens,treatment J2 and cyst with bacterial suspension and Dual-culture tests to soybean root rot pathogens were developed.The result showed that the bacterial suspension had effect on the hatching of cyst and the rate of inhibition was 94.9%;after 96 h,the mortality of J2 was 66.7% treated with bacterial suspension;strain Snb2 had strong anti-fungal activity to 4 soybean root rot pathogens,especially to Fusarium oxysporum,Fusarium solani,the inhibition zone was 10 mm and lasted almost ten days;after treated with bacterial,it apparently promoted the growth of soybean seedling,the length between cotyledon and root tip was 9.1±4.54 cm,15.19% higher than that of CK;In potted trial,bacterial suspension showed obvious efficency against soybean cyst nematode and control efficercy reached 62.5%.

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Available abstract

In order to study the effect of endophtic bacteria Snb2,Bacillus sp.,from soybean root on Heterodera glycines and soybean root rot pathogens,treatment J2 and cyst with bacterial suspension and Dual-culture tests to soybean root rot pathogens were developed.The result showed that the bacterial suspension had effect on the hatching of cyst and the rate of inhibition was 94.9%;after 96 h,the mortality of J2 was 66.7% treated with bacterial suspension;strain Snb2 had strong anti-fungal activity to 4 soybean root rot pathogens,especially to Fusarium oxysporum,Fusarium solani,the inhibition zone was 10 mm and lasted almost ten days;after treated with bacterial,it apparently promoted the growth of soybean seedling,the length between cotyledon and root tip was 9.1±4.54 cm,15.19% higher than that of CK;In potted trial,bacterial suspension showed obvious efficency against soybean cyst nematode and control efficercy reached 62.5%.

Key concepts: Heterodera, Root rot, Biology, Fusarium solani, Soybean cyst nematode, Fusarium oxysporum, Nematode, Seedling

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