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Effect of soil acidity factors on nodulation, active iron content of nodules and relative efficiency of symbiotic N2-fixation by mutant strains of Lens esculenta Rhizobium

Published online by Cambridge University Press:  27 March 2009

R. Rai  and
V. Prasad
R. Rai
Affiliation:
Rajendra Agricultural University, Dholi Campus, Dholi, Muzaffarpur-843121 Bihar, India
V. Prasad
Affiliation:
Rajendra Agricultural University, Dholi Campus, Dholi, Muzaffarpur-843121 Bihar, India
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Summary

Nitrosoguanidine-induced acid-tolerant mutants S1 and M1 of Lens esculenta Rhizobium leguminosarum were used for nodulation and symbiotic N2-fixation in acid soils having different pH and associated factors of acidity. The range of soil pH and associated acidity factors in which nodulation and N2-fixation responded varied, depending on mutant strains. However, strain M1 was more responsive and effective than S1. Antagonistic effect of Mn to Fe was found when the active Fe2+ and total Mn were determined in fresh nodules.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 100 , Issue 3 , June 1983 , pp. 607 - 611
Copyright
Copyright © Cambridge University Press 1983

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