End of the week again.
Continued with scoring of markers and sorted the markers based on their position on chromosomes.
Wheat is an allohexaploid (AABBDD, 2n=6x=42) with three genomes namely A, B and D. It has one of the most complex genomes.
Evolution of wheat:
1st evolutionary event- Interspecific hybridization between diploid wild einkorn wheat, Triticum uratu (A-genome progenitor, genomic constitution AA) and diploid wild grass, Aegilops speltoides (B-genome progenitor, genomic constitution BB). The resultant hybrid was the tetraploid emmer
wheat, Triticum turgidum (genomic
constitution AABB)
2nd evolutionary event- tetraploid emmer wheat Triticum turgidum var. durum crossed with the diploid wild goat grass, Aegilops tauschii (D- genome progenitor, genomic constitution DD) and led to the origin and evolution of allohexaploid
bread wheat, Triticum aestivum
(genomic constitution AABBDD).
Commercially cultivated wheat are basically of
two types, i.e. durum wheat (Triticum
durum) and bread wheat (Triticum
aestivum).
