Difference between revisions of "Triticum dicoccoides"
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| − | |discussion=<p>Triticum dicoccoides is the wild counterpart of T. dicoccum, and is an ancestor of both T. durum and T. aestivum. Morphologically, it is almost indistinguishable from T. araraticum Jakubz., a wild tetraploid that differs from T. dicoccoides in combining the Ab and G haplomes. Triticum dicoccoides is native to the Fertile Crescent. Its distribution overlaps that of T. araraticum in the northern and eastern portions of the region.</p> | + | |discussion=<p><i>Triticum dicoccoides</i> is the wild counterpart of <i>T. dicoccum</i>, and is an ancestor of both <i>T. durum</i> and <i>T. aestivum</i>. Morphologically, it is almost indistinguishable from T. araraticum Jakubz., a wild tetraploid that differs from <i>T. dicoccoides</i> in combining the Ab and G haplomes. <i>Triticum dicoccoides</i> is native to the Fertile Crescent. Its distribution overlaps that of T. araraticum in the northern and eastern portions of the region.</p> |
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| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V24/V24_386.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Triticeae | |tribe=Poaceae tribe Triticeae | ||
Revision as of 17:19, 18 September 2019
Culms to 100 cm, decumbent; nodes glabrous or puberulent; internodes mostly hollow, solid for 1 cm below the spikes. Blades 4-6 mm wide, pubescent. Spikes to 10 cm, wider than thick; rachises densely hairy at the nodes and margins; internodes 3-8 mm; disarticulation spontaneous, dispersal units wedge-shaped. Spikelets 15-25 mm, oblong to rectangular, with 3 florets, usually the lower 2 seed-forming. Glumes 10-15 mm, coriaceous, tightly appressed to the lower florets, 2-keeled, prominent keel winged to the base, 2-toothed, second tooth poorly developed; lemmas 10-15 mm, awned, awns on the lower 2 lemmas to 15 cm, on the third lemma to 2 cm; paleas not splitting at maturity. Endosperm flinty. Haplomes AuB. 2n = 28.
Discussion
Triticum dicoccoides is the wild counterpart of T. dicoccum, and is an ancestor of both T. durum and T. aestivum. Morphologically, it is almost indistinguishable from T. araraticum Jakubz., a wild tetraploid that differs from T. dicoccoides in combining the Ab and G haplomes. Triticum dicoccoides is native to the Fertile Crescent. Its distribution overlaps that of T. araraticum in the northern and eastern portions of the region.
Selected References
None.