Ergosterol concentration in mold-susceptible and mold-resistant sorghum at different stages of grain development and its relationship to flavan-4-ols

    Jambunathan, R and Kherdekar, M S and Vaidya , P (1991) Ergosterol concentration in mold-susceptible and mold-resistant sorghum at different stages of grain development and its relationship to flavan-4-ols. Journal of Agriculture and Food Chemistry, 39 (10). pp. 1866-1870. ISSN 0021-8561

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    Abstract

    Sorghum germplasm accessions (10) and breeding lines (3) exhibiting contrasting reactions to the grain mould complex (including Fusarium moniliforme [Gibberella fujikuroi], Curvularia lunata [Cochliobolus lunatus] and Phoma sorghina) were grown at Patancheru, India. Grains were harvested at different days after flowering (DAF) and analysed for ergosterol. Methanol and acidified methanol extracts of grains were analysed for flavan-4-ols. Ergosterol concn increased with increasing DAF in the mould-susceptible accessions and was 10-fold higher in grains collected at 50 DAF than in the corresponding mould-resistant accessions. It is suggested that ergosterol concn could be used to assess the magnitude of mould damage in sorghum grains. The correlation coeff. between ergosterol and flavan-4-ols concn was significant (P <0.01) and negative in coloured mould-susceptible and mould-resistant accessions that did not have testa, but no significant correlation was observed in white mould-resistant and mould-susceptible sorghum. It is concluded that there must be another genetic trait or mechanism besides flavan-4-ols that is associated with mould resistance

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Sorghum
    Depositing User: Mr B K Murthy
    Date Deposited: 06 Mar 2014 09:44
    Last Modified: 06 Mar 2014 09:44
    URI: http://oar.icrisat.org/id/eprint/7557
    Official URL: http://dx.doi.org/10.1021/jf00010a037
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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