01346naa a2200193 a 450000100080000000500110000800800410001910000180006024501130007826000090019152007750020065000190097565000180099465300160101265300230102870000130105170000170106477300710108114576961992-11-11       1991    bl ---       0--  u    #d1 aHAFEEZ, F. Y.  aThe effect of high temperature on Vigna radiata nodulation and growth with different bradyrhizobial strains.  c1991  aA study was conducted to examine the effect of constant high temperatures and diurnally administered temperature regimes (day/night temperature was maintained at 30oC and increasing 2 hr temperature shocks of 36, 42 and 48oC were applied daily) on growth, nodulation and nitrogen fixation of mungbean (Vigna radiata L. Wilczek) plants and growth responses of five different cowpea bradyrhizobial strains. Mungbean genotype and bradyrhizobial strains responded differently to high temperatures. Mungbean plants survived at (I) diurnal regimens of high temperature (2) constant root temperatures of 42 and 48oC (day and night), but germination at 48oC was reduced to 38%. The bradyrhizobial strains survived, grew and remained infective and effective after incubation at c  aBradyrhizobium  aVigna radiata  aN2-fixation  aTemperature stress1 aASAD, S.1 aMALIK, K. A.  tEnvironmental and Experimental Botanygv.31, n.3, p.285-294, 1991.