Gamma Radiation (<sup>60</sup>Co) Exposure and Application of Antagonists for the Suppression of Root Rot Diseases in Sunflower (<i>Helianthus annus</i> L.) and Mung Bean (<i>Vigna radiata</i> (L.) R. Wilczek)

Authors

  • S. Dawar Department of Botany, University of Karachi, Karachi
  • M.J. Zaki Department of Botany, University of Karachi, Karachi
  • N. Ikram Department of Botany, University of Karachi, Karachi
  • M. Tariq Department of Botany, University of Karachi, Karachi

DOI:

https://doi.org/10.3126/on.v8i1.4309

Keywords:

Gamma rays, 60Co, mung bean, sun flower seeds, root infecting fungi, suppression

Abstract

An experiment was carried out for the control of root rot fungi such as Fusarium spp., Macrophomina phaseolina (Tassi) Goid., and Rhizoctonia solani Kühn in Sunflower (Helianthus annus L.) and Mung bean (Vigna radiata (L.) R. Wilczek). Seeds were treated with gamma radiation (60Co) for 0, 2, 8 and 16 minutes intervals and soil was drenched with different antagonists such as Trichoderma harzianum Rifai, Pseudomonas aeruginosa (Schroeter) Migula and Rhizobium meliloti Dangeard. All the antagonists significantly increased germination percentage, shoot length, root length, shoot weight, root weight, leaf area and showed complete suppression of M. phaseolina and R. solani observed in mung bean and sunflower. In both crops, mostly growth parameters increased as the exposure of gamma rays increased whereas in some cases it decreased. P. aeruginosa and R. meliloti were observed to be satisfactory biocontrol agents followed by T. harzianum whereas all exposure time of irradiation of gamma rays (60Co) to seeds of mung bean and sunflower were found to be best.

DOI: 10.3126/on.v8i1.4309

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How to Cite

Dawar, S., Zaki, M., Ikram, N., & Tariq, M. (2011). Gamma Radiation (<sup>60</sup>Co) Exposure and Application of Antagonists for the Suppression of Root Rot Diseases in Sunflower (<i>Helianthus annus</i> L.) and Mung Bean (<i>Vigna radiata</i> (L.) R. Wilczek). Our Nature, 8(1), 26–33. https://doi.org/10.3126/on.v8i1.4309

Issue

Vol. 8 No. 1 (2010)

Section

Articles

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