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Hordeum vulgare subsp. spontaneum (2n = 2X = 14). Triticum urartu; Aegilops speltoides; Triticum tauschii (2n = 2x = 14). Triticum monococcum (Einkorn) (2n = 2X = 14) Hulled Triticum turgidum subsp. dicoccum (Emmer) (2n = 4x= 28) Hulled Triticum aestivum subsp. spelta
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Hordeum vulgare subsp. spontaneum (2n = 2X = 14) Triticum urartu; Aegilops speltoides; Triticum tauschii (2n = 2x = 14) Triticum monococcum (Einkorn) (2n = 2X = 14) Hulled Triticum turgidum subsp. dicoccum (Emmer) (2n = 4x= 28) Hulled Triticum aestivum subsp. spelta (2n = 6x = 42) Hulled Triticum turgidum subsp. durum (durum) (2n = 4x= 28) free threshing Hordeum vulgare subsp. vulgare (2n = 2x = 14) Hulled, free threshing (hull-less, naked) Triticum aestivum (2n = 6x = 42) free threshing
Polyploidy (genetic flexibility, if not always horsepower) 1 pair homologous chromosomes 0 sets of homoeologous chromosomes HH 2 pairs of homologous chromosomes 2 sets of homoeologous chromosomes AABB 3 pairs of homologous chromosomes 3 sets of homoeologous chromosomes AABBDD V V V V V V V V V V V V 2n = 6x = 42 90,000 genes 2n = 2x = 14 30,000 genes 2n = 4x = 28 60,000 genes