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 Agricultural and Food Chemistry, 39 (10). pp. 1866-1870. ISSN 0021-8561

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    Abstract

    Sorghum [Sorghum bicolor (L.) Moench] germplasm and breeding lines exhibiting contrasting reactions to the grain mold complex were grown at Patancheru, India. Grains were harvested at different days after flowering (DAF) and analyzed for ergosterol. Methanol and acidified methanol extracts of grains were analyzed for flavan-4-01s. Ergosterol concentration increased with increasing DAF in the moldsusceptible accessions and was 10-fold higher in grains collected at 50 DAF than in the corresponding mold-resistant accessions. Ergosterol concentration could therefore be used to assess the magnitude of mold damage in sorghum grains. The correlation coefficient between ergosterol and flavan-4-01s concentrations was significant (P C 0.01) and negative in colored mold-susceptible and mold-resistant accessions that did not have testa, but no significant correlation was observed in white mold-resistant and mold-susceptible sorghum. This indicates that there must be another genetic trait or mechanism besides flavan-4-01s that is associated with mold resistance.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Sorghum, Germplasm, Breeding, Grain deevelopment
    Subjects: Others > Plant Breeding
    Mandate crops > Sorghum
    Others > Germplasm
    Depositing User: Mr Ramesh K
    Date Deposited: 29 Sep 2016 06:25
    Last Modified: 17 May 2017 10:11
    URI: http://oar.icrisat.org/id/eprint/9710
    Official URL: http://dx.doi.org/10.1021/jf00010a037
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: Authors thank V. Subramanian for his interest and suggestions and B. J. Moss for technical assistance.
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