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Articles by Amer Zareen
Total Records ( 2 ) for Amer Zareen
  Amer Zareen , M. Javed Zaki , S. Shahid Shaukat and S. R. Gowen
  Pasteuria spore attachment to root knot juveniles reduced significantly (p<0.001), as dilution factor of bacterial suspension was increased. Isolate UK 1 provided maximum spore attachment to Meloidogyne juveniles in all three dilutions of bacterial spore suspension (S, S/2 and S/4) compared to other test isolates and control. Infected juveniles by spores of all bacterial isolates (UK 1, PK 1 and PK 2) significantly (p<0.05) suppressed invasion to tomato roots. There was significant difference (p<0.001) in root invasion by nematodes exposed to the different concentrations of test bacterial isolates. Temperatures i.e. 15 and 35°C exhibited reduction in bacterial spore attachment to the root knot juveniles. Whereas 25 and 30°C favored bacterial infection of nematodes.
  Amer Zareen , Nazir Javed and M. Javed Zaki
  In a mirco-plot field experiment four isolates of Pasteuria (one from UK and three local isolates viz., PK 1, PK2 and PK3) and a mixed inoculum of all four isolates (blend) were tested against Meloidogyne javanica on tomato to understand the pathogenic variability of different bacterial isolates. Yield of tomato and plant growth as plant height, fresh shoot and root length was improved significantly by blend inoculum of bacterial antagonists compared to control. Nematode development in roots and soil was suppressed by blend applications followed by individual Pasteuria applications i.e. UK > PK 1> PK2 and >PK3 isolates compared to untreated control plots.
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