Capturing D Genome Variation for Wheat Improvement

Video   Apr 13, 2015


The diploid D genome species, Aegilops tauschii Coss. is source of allelic variation for hexaploid wheat, Triticum aestivum L and has provided numerous genes for resistance to diseases and insect pests. Direct crossing of Ae. tauschii accessions with an elite wheat breeding line transferred resistance to the Ug99 races of wheat stem rust. Bulked segregant analysis of BC2F1 genotypes with SSR loci across the D genome identified the chromosome locations of four stem rust resistance genes from four different Ae. tauschii accessions. Fine mapping is underway for a gene located distally on 6D. In the process of gene transfer, a nested design population was developed that samples the D genomes of seven different Ae. tauschii accessions in a single bread wheat background enabling the evaluation of novel quantitative variation. An additional three stem rust resistance genes have been identified this population. Currently, seed dormancy traits, pre-harvest sprouting resistance and amylase activity are being investigated.


Recommended Videos

Bees Under Siege: Making Sense of Multiple Stressors


Bees are an important link in the global food-chain. However, modern agricultural practices, chemicals, predators, diseases: they are all damaging to bees. But what happens when bees are exposed to more than one stressor simultaneously? EFSA is trying to find out.


CRISPR: Gene Editing and Beyond


The CRISPR-Cas9 system has caused huge advances in our ability to edit genes, but there are many other exciting possibilities for CRISPR applications, reviewed in this video from Nature.


Watch: CRISPR-Cas9 Gene Editing Visualized in 3D Animation


A collaboration between Visual Science and Skoltech reveals the details of the CRISPR Gene Editing Technique in this 3D animation.



Comments | 0 ADD COMMENT

Like what you just watched? You can find similar content on the communities below.

Genomics Research

To personalize the content you see on Technology Networks homepage, Log In or Subscribe for Free