Entire nucleotide sequences of Gossypium raimondii and G. arboreum mitochondrial genomes revealed A‐genome species as cytoplasmic donor of the allotetraploid species

Cotton (Gossypium spp.) is commonly grouped into eight diploid genomic groups, designated A-G and K, and an allotetraploid genomic group, AD. Gossypium raimondii (D5 ) and G. arboreum (A2 ) are the putative contributors to the progenitor of G. hirsutum (AD1 ), the economically important fibre-producing cotton species. Mitochondrial DNA from week-old etiolated seedlings was extracted from isolated organelles using discontinuous sucrose density...