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Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 6 | Page No.: 957-959
DOI: 10.3923/pjbs.2000.957.959
 
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Effect of VAM on Drought Tolerance and Growth of Plant in Comparison with the Effect of Growth Regulators

Najma Ayub, A. Bano , S. Ramzan and M. Usman

Abstract:
The present study was carried out to investigate the involvement of VAM and phytohormones under drought stress. An experiment was conducted to evaluate the effect of vesicular arbuscular mycorrhizal inoculation on plant growth and yield under controlled and drought conditions. Plant growth regulators viz. ABA and GA were used in combination with VAM and/or drought, to find out the interactive effect of VAM and phytohormones on plant growth and yield under drought stress. Foliar spary of phytohormones viz. Gibberellic acid (GA) and Abscisic acid (ABA) each at a concentration of 10–6 M was made prior to the imposition of first water stress. The treatments including VAM showed better vegetative and reproductive growth than non-VAM plants. The plants which were subjected to foliar application of GA and ABA in combination with VAM (VAM + ABA and VAM+GA) gave better yield than VAM alone. The vegetative and reproductive growth was decreased in drought stressed, non-VAM plants as a result of which, shoot and root dry weights and yield were reduced. However, VAM+Drought+ABA increased the weight of pods/plant and shoot dry weight/plant. The VAM and foliar application of ABA, helped the plants to increase the yield insignificantly in VAM+ABA+Drought and significantly in VAM+ABA. Foliar application of ABA and GA in the absence of VAM has not been found to be stimulatory to yield.
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How to cite this article:

Najma Ayub, A. Bano , S. Ramzan and M. Usman , 2000. Effect of VAM on Drought Tolerance and Growth of Plant in Comparison with the Effect of Growth Regulators. Pakistan Journal of Biological Sciences, 3: 957-959.

DOI: 10.3923/pjbs.2000.957.959

URL: https://scialert.net/abstract/?doi=pjbs.2000.957.959

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