Effect of genotype and environment on flavonoid concentration and profile of black sorghum grains

Taleon, V. and Dykes, L. and Rooney, W. L. and Rooney, L. W. (2012) Effect of genotype and environment on flavonoid concentration and profile of black sorghum grains. Journal of Cereal Science, 56 (2). pp. 470-475.

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In recent years, colored sorghum genotypes high in flavonoids have been developed. Flavonoid levels of eight black sorghum genotypes grown in four locations in Texas were evaluated to assess the relative genotype, environment and genotype x environment effects. Levels of total 3- deoxyanthocyanidins ranged from 292 μg/g to 499 μg/g and 251 μg/g to 804 μg/g across environments and genotypes, respectively. Total 3-deoxyanthocyanidins in sorghums from Halfway were low (178-694 μg/g) due to the reduction of their non-methoxylated forms. This reduction is likely due to significant grain weathering which was observed only at Halfway. In addition, flavanone and flavone levels were the lowest at Halfway with levels of 12 μg/g and 78 μg/g , respectively. For all flavonoids there was a 28 genotype by environment interaction (p < 0.01) which suggests that environment had a different effect on flavonoid levels depending on the genotype. Color values L*, a* and b* did not correlate with flavonoid content. Due to genotype, environment and their interactions, sorghum breeders must evaluate these traits in multiple environments to identify genotypes with high and stable production of flavonoid compounds.

Item Type: Article
Additional Information: We are thankful to Delroy Collins for performing the weathering score for sorghum grains. We appreciate the long-term support from USDA-ARS, USAID INTSORMIL CRSP, and the United Sorghum Producers Checkoff, along with financial support, facilities, equipment, and technical support from the Texas A&M Sorghum Improvement Program for the past 40 years.
Uncontrolled Keywords: Sorghum, Flavonoids, Methoxylated 3-deoxyanthocyanidins, Environment effect
Author Affiliation: Cereal Quality Lab, Dept. of Soil & Crop Sciences, Texas A & M University, College Station, TX
Subjects: Crop Improvement
Divisions: Sorghum
Depositing User: Mr Siva Shankar
Date Deposited: 29 Jun 2012 05:34
Last Modified: 02 May 2017 08:13
Official URL: http://dx.doi.org/10.1016/j.jcs.2012.05.001
URI: http://eprints.icrisat.ac.in/id/eprint/6353

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