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Articles by M. Naeem
Total Records ( 5 ) for M. Naeem
  M. Tahir Jan , M. Naeem , M. Idrees Khan and Rashid Mehmood
  During the crop season leafhoppers and aphids were found the serious pests of potato crop with seasonal mean of 15.55 per branch and 5.21per sweep, in control plot (monoculture), respectively. The field cricket was also found damaging the tubers but the population was low. Potato crop was mix grown with berseem (PBM) and radish (PRM) as control strategy. Over 70% reduction in leafhopper population occurred due to inter-cropping tactics as compared to control. However among the inter-cropping system, PBM combination was found better than PRM.
  Saqba Mahmood , Sara Zafar , M. Yasin Ashraf , G. Sarwar , M. Ashraf and M. Naeem
  Biochemical changes in resistant and susceptible cotton cultivars to leaf curl virus (CLCuV) were assessed by a series of laboratory experiments. The experiments were conducted in petri-dishes containing filter papers with sterile distilled water on which seeds of the cotton cultivars i.e. CIM-446, resistant and S-12 susceptible to CLCuV were sown, each cultivar have five replications and petri-dishes were kept in growth cabinet at 28± 2°C. The results showed that the growth attributes proved S-12 superior to CIM-446. But with respect to the biochemical attributes both the cultivars appear to use different biochemical attributes for their germination demands. Soluble sugars translocations and its concentrations were higher in CIM-446 than S-12. In all the three embryonic organs of germinating seeds, starch mobilization had also the same pattern of varietal difference, where CIM-446 had greater ratio of starch, more active enzyme (α-amylase), degrading starch and higher comparative ratio of the resultant product of starch degradation. This may provide better fulfillment of structural requirements to resist virus at vegetative growth stages by contributing readily available energy by active break down of starch and translocation of sugars which may play some role in the composition of antibodies or some other biochemical/physiological responses associated with starch and sugars.
  M. Tahir Jan , M. Naeem , M. Idrees Khan and Rashid Mehmood
  During the crop season leafhoppers and aphids were found the serious pests of potato crop with seasonal mean of 15.55 per branch and 5.21 per sweep, in control plot (monoculture) respectively. The field cricket was also found damaging the tubers but the population was low. Potato crop was mix grown with berseem (PBM) and radish (PRM) as control strategy. Over 70% reduction in leafhopper population occurred due to inter-cropping tactics as compared to control. However among the inter-cropping system, PBM combination was found better than PRM.
  Khalida Khan , M. Naeem , M. Javed Arshed and M. Asif
  The present study was conducted to determine the isolation, identification and characterization of efficient oil degrading bacterial strains and to study the effect of different concentration of crude oil on the growth of bacterial strain. Two samples soil and water were collected from the crude oil contaminated areas for the isolation and characterization of efficient crude oil degrading strains. Sub culturing technique was employed to isolate 43 numerically dominant bacteria that had the ability to grow on 1.0% crude oil on nutrient agar plates. The isolates were then subjected to different concentrations of crude oil on nutrient agar, mineral salt agar media containing Phosphorous, Nitrogen and trace elements with glucose (PNTG) and without glucose (PER). These isolates showed rich growth on nutrient agar media along with crude oil. Out of 43 isolates 7 were able to grow up to 2.0% crude oil and were named as AA-1 to AA-7. These strains were also able to grow on mineral salt agar media with and without glucose but with different susceptibility to different concentrations of crude oil. Finally 3 prospective strains AA-1, AA-2 and AA-3 were selected for further studies. These strains exhibited good growth in PNTG containing 1.0% crude oil as evident by increase in Optical Density (OD) after every 24 h for five days. These isolated strains were identified by morphological and biochemical tests and were found to belong to genus Bacillus. These strains were subjected to shake flask transformation of crude oil in mineral salt media (PNTG) with glucose for 15 days. Marked change in crude oil colour was observed for these isolates, indicating their biodegradative ability. These isolated strains were able to use crude oil as the sole source of carbon and energy even under stressed environmental conditions. Thus these strains have bright potential for biodegradation of crude oil resulting in clean up of oil spills.
  M. Naeem , Salah-ud-Din Baber , M. Yasin Ashraf and A.R. Rao
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