Abundance and characterization of cowpea miscellany Rhizobium from sudanese soils

Hadad, M. A.; Loynachan, T. E.

doi:10.1016/0038-0717(85)90051-3

Cited by 6 publications

(4 citation statements)

References 14 publications

(12 reference statements)

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“…Previous studies have also shown sensitivity of cowpea rhizobia to alkaline medium compared to acidic medium Zablotowicz and Focht, 1981). Particularly, cowpea rhizobia were tolerant to strong acidity of pH 4.5 (Zablotowicz and Focht, 1981) but intolerant to pH 10 (Hadad and Loynachan, 1985). This is in agreement with the present findings in that isolates were intolerant to grow in medium of pH 4 and pH greater than 8.…”

Section: Stress Tolerance Of the Rhizobial Isolatessupporting

confidence: 93%

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Phenotypic and genotypic characteristics of cowpea rhizobia from soils of Ethiopia

Kenasa¹,

Assefa²,

Habteselassie³

2018

Afr. J. Biotechnol.

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Phenotypic and genotypic characteristics of cowpea rhizobia indigenous to soils of Ethiopia are unknown. Forty indigenous cowpea rhizobial isolates were collected from cowpea-growing areas of the country and were characterized for their growth and genetic properties. Based on their cultural characteristics, the isolates were categorized into fast (FG), slow (SG), and extraslow-growings (ESG). The FG, SG, and ESG isolates had mean generation time (h)/colony diameter (mm)/date of turbidity formation (d) in the range of 2.

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Section: Stress Tolerance Of the Rhizobial Isolatessupporting

confidence: 93%

“…Fast-growing cowpea rhizobial isolates are more tolerant to in vitro stresses than the slow-growing isolates (Leite et al, 2009;Abdelnaby et al, 2015). Reports about versatility in utilization of C and N substrates by cowpea rhizobia are inconsistent (Hadad and Loynachan, 1985;Abdelnaby et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Phenotypic and genotypic characteristics of cowpea rhizobia from soils of Ethiopia

Kenasa¹,

Assefa²,

Habteselassie³

2018

Afr. J. Biotechnol.

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“…This agrees with Habish and Kheiri (1968) who reported that their isolates did not nodulate cowpea, which is not characteristic of the cowpea group. However Hadad and Loynachan (1985) reported that individual isolates of Rhizobium from six legumes: groundnut (Arachis hypogaea), mung bean (Vigna radiata), lubia (Dolichos lablab), cowpea (Vigna unguiculata), pigeonpea (Cajanus cajan) and bambara groundnut (Voandzeia subterranea) were obtained from four locations in Sudan. All isolates were able to nodulate each of the six legumes when grown in sterile vermiculite.…”

Section: Pot Experimentsmentioning

confidence: 99%

Isolation and Biochemical Characterization of Bacteria Isolated from Groundnut (Arachis hypogaea L.) in Sudan

Idris¹,

Rahim²,

Suleiman³

2015

IJSRK

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Abstract. Using of commercial bacteria showed unacceptable results in inoculation trials. This necessitates looking for locally isolated nitrogen fixing bacteria to use as inoculants. This study was done to isolate and select the most efficient bacteria from groundnut (Arachis hypogaea) root nodules. In this study three bacterial strains were isolated from El-Gadarif, El-Gezira and El-Obied soils and pot experiments were done. The study showed that, the field nodules were found distributed on both main and lateral roots of groundnut. The colour of nodules obtained from El-Gadarif soil was pink, while the nodules obtained from El-Gezira and El-Obied soils were of a white colour. All strains were Gram negative, white, circular, viscous, did not absorb Red Congo indicator, produced yellow colour and acidified Yeast Extract Mannitol Agar with bromothymol blue, fast growing, grew in Peptone Glucose Agar medium. All bacterial strains induced nodule formation to groundnut and unable to form nodules in Phaseolus valgaris and Vigna senesis. Inoculation of groundnut by the isolates enhanced groundnut growth. The strain isolated from groundnut nodules in El-Gadarif soil was found the best for groundnut growth promotion. The isolates in the present study showed high symbiotic effectiveness. The study concluded that the strains isolated were fast growing Rhizobia like. Isolation and application of local nitrogen fixing bacteria may resolve the competitiveness and environmental conditions variation and fluctuation problems in the field.

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“…Cowpea production is common in tropical agriculture since it fixes atmospheric dinitrogen in association with soil inhabiting rhizobia. Cowpea rhizobia are naturally promiscuous, nodulating different leguminous herb plant [2] although their degree of symbiotic efficiency varies among cross-inoculation groups [3]. The ability of cowpea rhizobia to form nodules with a wide range of legume hosts may contribute to their persistence in different agroecologies.…”

Section: Introductionmentioning

confidence: 99%

Symbiotic and Agronomic Performance of Cowpea Rhizobial Inoculants from Soil of Ethiopia under Field Conditions

Nandeshwar

Kenasa

Assefa

2020

IJPSS

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The effect of inoculating indigenous cowpea nodule bacteria of Ethiopia on the crop performance was not tested under field condition with the ultimate goal of selecting effective inoculants. Root nodule bacteria which showed strong symbiotic effectiveness under greenhouse condition were selected for field experiment. Under field conditions, inoculation of cowpea with ECR-0+ECE-21 and ECR-101+ECE-21 resulted in a maximum grain yield (GY, 2713 kg ha-1) and above ground biomass (BW, 506 g m-2), respectively. The co-inoculation of cowpea with ECR-0 and ECE-21 and ECR-24 and ECE-21 significantly improved (p<0.05) the N-content and GY as compared to their single rhizobial inoculation. The native strains performed better than the exotic strain (Biofix). Performance of the strains was similar at the two test locations except ECR-14 and ECR-24 that resulted 13% greater of BW at Uke than at Bako. Symbio-agronomic performance of native rhizobia under field condition showed direct correlation (r>0.5; p<0.01) to each other except nodule number. In general, both single and co-inoculation of the native rhizobacterial inoculants improved cowpea performance. This is a promising biofertilizer to enhance cowpea production in Ethiopia, where the farmers cannot afford to buy chemical fertilizers.

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Abundance and characterization of cowpea miscellany Rhizobium from sudanese soils

Cited by 6 publications

References 14 publications

Phenotypic and genotypic characteristics of cowpea rhizobia from soils of Ethiopia

Phenotypic and genotypic characteristics of cowpea rhizobia from soils of Ethiopia

Isolation and Biochemical Characterization of Bacteria Isolated from Groundnut (Arachis hypogaea L.) in Sudan

Symbiotic and Agronomic Performance of Cowpea Rhizobial Inoculants from Soil of Ethiopia under Field Conditions

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