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Present study deals with the inoculation of two selenium resistant bacterial strains Bacillus pumilus and Bacillus licheniformis on various growth parameters of Helianthus annuus (sunflower) in pot trials. For pot experiment natural garden soil was used but in one experiment the soil was used as sterilized. Bacterial inoculations caused a reduction (14%) in seed germination as compared to un-inoculated (control). Maximum root length (103 cm) was observed in inoculated sunflower plants in sterilized garden soil while maximum shoot length (28 cm) was seen in plants growing in sterilized soil without inoculums. Maximum number of roots was observed in case of un-inoculated control plants grown in sterilized soil. Inoculated plants grown in sterilized soil exhibits highest auxin content (72%) as compared to other treatments where it range from 22 to 25%. Acid phosphatase and peroxidase activity was optimum in case of control plants grown in sterilized garden soil.
Anam, Abid Hussain , Muhammad Faisal. (2013) Beneficial impact of selenium resistant bacteria on selenium contaminated soil and plant growth , Punjab University Journal of Zoology, Volume 28, Issue 2.
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