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#wheat

5 public questions tagged with this topic.

Plant Breeding 4

Triticale is a hybrid of:

Triticale is first man-made cereal synthesizing wheat and rye benefits into single allopolyploid species deliberately created by humans. It was created by crossing wheat genus Triticum as female and rye Secale cereale as male. Primary triticale uses tetraploid durum wheat T. turgidum AABB 2n=28 × diploid rye RR 2n=14 producing sterile ABR 21 hybrid doubled to allohexaploid AABBRR 2n=42. Secondary or hexaploid triticale commonly grown today derives from hexaploid bread wheat AABBDD 2n=42 × rye RR 2n=14, chromosome doubled to octoploid AABBDDRR 2n=56 then stabilized to hexaploid AABBRR through c

Ref: Oettler G. Triticale breeding history; Mergoum M. Crop Sci – Triticale wheat-rye hybrid origin

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Plant Breeding 1

Triticale is an example of:

Triticale exemplifies man-made intergeneric cereal synthesised by crossing wheat Triticum aestivum or Triticum durum with rye Secale cereale, two distinct genera within tribe Triticeae. Primary hybrid from this wide cross is haploid or triploid with unpaired chromosomes leading to sterility due to meiotic irregularities and univalents. To restore fertility, seedlings treated with colchicine alkaloid that inhibits microtubule polymerization preventing spindle formation, inducing chromosome doubling to create autoallohexaploid 6x or octoploid 8x with complete homologous pairing. This amphiploid

Ref: Oettler Triticale breeding Adv Agron; Linde-Laursen Genomic in situ Triticale; Singh BD Intergeneric hybrid example.

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