-“PEANUT NODULATION KINETIC IN RESPONSE TO LOW PH AND CALCIUM”

ANGELINI, J.; TAURIAN,T.; MORGANTE,C.; IBÁÑEZ,F.; CASTRO,S.; FABRA,A.

PLANT PHYSIOLOGY AND BIOCHEMISTRY

Año: 2005 p. 754 - 759

0981-9428

In this work, the peanut nodulation kinetics by acid sensitive and tolerant isolates under acid stress, and the effect of the Ca2+ addition were analyzed. The results demonstrated that the acid pH produced a decrease in the number of nodules formed only when peanut plants were inoculated with acid-sensitive isolates but increased steadily by the addition of 10 mM Ca2+, reaching higher values than those obtained at pH 7.0. On the contrary, the peanut nodulation by acid-tolerant isolates was not affected by this stressing condition. These data suggest that acid-tolerant isolates could be used as a potential source of strains for preparing highly effective inoculants for peanut plants growing in acid soils.