Natural Variation in Synthesis and Catabolism Genes Influences Dhurrin Content in Sorghum.

Cyanogenic glucosides are natural compounds found in more than 1000 species of angiosperms that produce HCN and are deemed undesirable for agricultural use. However, these compounds are important components of the primary defensive mechanisms of many plant species. One of the best-studied cyanogenic glucosides is dhurrin [(S)-p-hydroxymandelonitrile-β-D-glucopyranoside], which is produced primarily in sorghum [Sorghum bicolor (L.

Genetic analysis of recombinant inbred lines for Sorghum bicolor × Sorghum propinquum.

We describe a recombinant inbred line (RIL) population of 161 F5 genotypes for the widest euploid cross that can be made to cultivated sorghum (Sorghum bicolor) using conventional techniques, S. bicolor × Sorghum propinquum, that segregates for many traits related to plant architecture, growth and development, reproduction, and life history. The genetic map of the S.

Molecular mapping and characterization of BLMC, a locus for profuse wax (bloom) and enhanced cuticular features of Sorghum (Sorghum bicolor (L.) Moench.).

Sorghum is distinct from other cereal crops due to its ability to produce profuse amount of epicuticular wax (EW or bloom) on its culm and leaves along with less permeable cuticle which are considered to be important traits contributing to abiotic stress tolerance. Here, we report the molecular mapping and characterization of BL OO M-C UTICLE (BLMC), a locus associated with production of profuse wax, using a mutant mapping population developed from a cross between BTx623 (wild type with profuse wax) and KFS2021 (a mutant with greatly reduced wax). The F2 progenies were genotyped using known and newly developed microsatellite markers to establish a molecular map of BLMC.