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Nitrogen requirements of five species ofHelminthosporium

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Proceedings / Indian Academy of Sciences

Abstract

The growth response ofH. speciferum (Bain.) Nicot,H. rostratum Drechs.,H. hawaiiense Bougn.,H. nodulosum Berk. ex Curt. andH. halodes Drechs. towards fifteen different nitrogen sources was studied. Potassium nitrate, L-asparagine, DL-aspartic acid and L-tyrosine supported good growth, while L-cystine was a poor source for the organisms under study. Sodium nitrite did not permit any growth ofH. rostratum, H. nodulosum andH. halodes, while remaining two species accomplished very poor growth. DL-Tryptophane supported good growth ofH. rostratum, while rest of the species attained poor mycelial growth. DL-Leucine, L-arginine and DL-valine induced good mycelial growth ofH. rostratum, while rest of the species attained moderate mycelial growth.H. hawaiiense grew well on alanine, whileH. nodulosum made meagre growth and remaining three species achieved moderate growth. Ammonium nitrate was a good source forH. rostratum and moderate for remaining species, while ammonium sulphate was good forH. rostratum, moderate forH. hawaiiense and poor for rest of the species.

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Authors and Affiliations

  1. Botany Department, University of Jodhpur, Jodhpur

    S. M. Reddy

  2. Botany Department, P. G. Centre, Warangal-1, A.P.

    S. M. Reddy

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  1. S. M. Reddy
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Communicated by Prof. K. S. Thind,f.a.sc.

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Reddy, S.M. Nitrogen requirements of five species ofHelminthosporium . Proc. Indian Acad. Sci. 74, 142–146 (1971). https://doi.org/10.1007/BF03050625

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  • DOI: https://doi.org/10.1007/BF03050625

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