Gorz, H.J. and Haag, W.L. and Specht, J.E. and Haskins, F.A. (1977) Assay of p-Hydroxybenzaldehyde as a Measure of Hydrocyanic Acid Potential in Sorghums. Crop Science, 17 (4). pp. 578-582.
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Abstract
A method of assessing the hydrocyanic acid potential (HCN-p) of sudangrass [Sorghum sudanense (Piper) Stapf] and sorghum [S. bicolor (L.) Moench] seedlings is described. This procedure is based on the determination of p-hydroxybenzaldehyde (p-HB), which is released upon hydrolysis of dhurrin, the cyanogen normally present in plants of Sorghum species. Extraction and hydrolysis of dhurrin are accomplished by autoclaving young leaf tissue in water. The content of p-HB in the aqueous extract is then determined by spectrophotometric assay in alkaline solution at 330 nm. Uniform samples for the comparison of widely divergent genotypes are obtained by using the first leaf of young, chamber-grown, green seedlings. Relative ranks of a wide variety of sorghum germplasm assayed for HCN content by this technique are in good agreement with those obtained by other methods. The procedure shows promise of providing a rapid and precise tool for conducting genetic and breeding studies with sorghums
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Dhurrln, Prussic acid, Cyanide, Sudangrass, Forage sorghum, Sorghum sudanense, Sorghum bicolor |
| Author Affiliation: | Supervisory Research Geneticists, ARS,USDA |
| Subjects: | Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 26 Mar 2012 10:17 |
| Last Modified: | 26 Mar 2012 10:17 |
| Official URL: | https://www.crops.org/publications/cs/abstracts/17... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4177 |
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