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Bread wheat is Diploid Tetraploid Hexaploid Triploid

Bread wheat is
  1. Diploid
  2. Tetraploid
  3. Hexaploid
  4. Triploid

Grade:12th pass

1 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
6 years ago
The correct option is 3.
Bread wheat is an allohexaploid (an allopolyploid with six sets of chromosomes, two sets from each of three different species). Free-threshing wheat is closely related to spelt. As with spelt, genes contributed from goatgrass (Aegilops tauschii) give bread wheat greater cold hardiness than most wheats, and it is cultivated throughout the world's temperate regions.

Of the six sets of chromosomes, two come from Triticum urartu (einkorn wheat) and two from Aegilops speltoides. This hybridisation created the species Triticum turgidum, 580-820 thousand years ago. The last two sets of chromosomes came from Aegilops tauschii, 230-430 thousand years ago.

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