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Abstract
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Article Information:
Effect of Salinity on Striga hermonthica Seed Germination and Incidence on Infested Sorghum
M.M. Hassan, M.G. Osman, A.M. Fatoma, E.A. ELhadi and A.E. Babiker
Corresponding Author: Mohammed
Submitted: 2010 April, 04
Accepted: 2010 April, 17
Published: 2010 May, 20 |
Abstract:
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The parasitic weed Striga hermonthica poses a serious threat to cereal production in Sudan. Seeds
of Striga hermonthica were exposed to 25, 50, 75, 100 and 150 mM NaCl solutions during their preconditioning
period (for 10 days) under laboratory conditions and induced to germinate by synthetic germination stimulant
(GR24). Seed germination was decreased significantly with the increase in salt solution concentration. Striga
germination was reduced by 79% at salinity level of 150 mM. Haustorium initiation in response to sorghum
root macerate showed differential response to salinity. Significant reduction in haustorium initiation was
observed only at salinity level of 150 mM. It reduced haustorium initiation by 66%than the corresponding
control. In the pot experiment, the effects of salt stress on Striga incidence were investigated. Soil saturated
with 75 mM NaCl resulted in complete absence of Striga emergence. W hile sorghum treated with 50 mM NaCl
sustained the least Striga infestation, it reduced Striga infestation by 74 and 55% after 45 and 60 days,
respectively.
Key words: Germination, haustorium initiation, salinity, Striga hermonthica, , ,
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Cite this Reference:
M.M. Hassan, M.G. Osman, A.M. Fatoma, E.A. ELhadi and A.E. Babiker, . Effect of Salinity on Striga hermonthica Seed Germination and Incidence on Infested Sorghum. Current Research Journal of Biological Sciences, (3): Page No: 210-213.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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