15N2 incorporation and acetylene reduction by Azospirillum isolated from rice roots and soils

Autor: D. N. Nayak, P. B. B. N. Charyulu, V. Rajaramamohan Rao
Rok vydání: 1981
Předmět:
Zdroj: Plant and Soil. 61:429-436
ISSN: 1573-5036
0032-079X
DOI: 10.1007/bf02182023
Popis: Nitrogen fixation by strains of Azospirillum isolated from several rice soils and rice cultivars was investigated by15N2 incorporation and C2H2 reduction. C2H2 reducing ability markedly varied among the strains obtained from soils differing widely in their physico-chemical properties. Large variations in15N2 incorporation by Azospirillum isolated from the roots of several rice cultivars were also noticed. The present study reveals that rice cultivars harbour Azospirillum with differential N2-fixing ability and that plant genotype is of importance for optimal associations.
Databáze: OpenAIRE