In a new paper published this month, the team measured photosynthesis in 25 genotypes of wheat — including wild
relatives of bread wheat (Triticum aestivum)-- and found variation exists even amongst closely related genotypes.
Now, an international team of scientists led by researchers at the University of California, Davis, has come a step closer to solving the puzzle by sequencing the genome of a wild
ancestor of bread wheat known as Aegilops tauschii, a type of goatgrass.
Instead of being diploid, with two sets of chromosomes like humans and most other living things, it became polyploid, with, in the
case of bread wheat, seven sets of six related chromosomes.
Right now, most farmers grow only one
subspecies of bread wheat — Triticum aestivum — the ancestor of which emerged more than 10,000 years ago.
Take the wild and distant
relatives of bread wheat, transfer any agronomically important traits you can find into modern varieties of wheat and distribute the newly created germplasm worldwide for exploitation in international breeding programmes and scientific research.
Yesterday scientitsts announced in a quartet of papers in the journal Science that the draft genome
of bread wheat — Triticum aestivum — had been decoded and mapped.