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Laboratory study of the effect of some Nutrient elements in some physiological criteria of the fungus Helminthosporium oryzae) Breed de Haan ). | ||
| Magazine of Al-Kufa University for Biology | ||
| Article 1, Volume 1, Issue 1, 2009, Pages 92-99 | ||
| Abstract | ||
| The Helminthosporium oryzae fungus was . isolated from the infected Leaves and steams of rice which its infection with Brown disease collected from the effect of the Abbasia fields / Najaf Reigon in the date 25/9/2008 . The expermint conducted to study Nutrient elements ( Ca , Mn , Fe) on biological activity of the fungus Helminthosporium oryzae . The study clear of that Ca promoted the fungus growth , specially in low conscntrations to 8.3 cm comparied with 7 cm in the control treatment . Also the low conceutration increases the sporalization of the fungs which reached to 38370000 spore /ml compaired withe 33180000 spore / ml . in control , dry weitght Biomass increased to reach 6.86 gm compaired with 6.13 gm in control . The effects of Other elements were differented comparied with control , In other hand the high conscentration of the elements inhibited the radial growth of the fungus to 2.7 ,4.0 and 4.6 cm respectively compaired with 7.0 , 7.2 and 7.5 cm in control , and the dry weight of biomass and sporalization of the fungus decreased also . | ||
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