Difference between revisions of "Zea mays subsp. mexicana"
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| − | |discussion=<p><i>Zea mays </i>subsp.<i> mexicana</i> is a weedy taxon, native to upland Mexico. It is most abundant in the Meseta Central of the Mexican neo-volcanic plateau, at elevations of 1700-2500 m. It grows almost entirely in and around cornfields, and readily hybridizes with <i></i>subsp.<i> mays</i>. The long-day tolerant 'Northern Teosinte' is the result of a series of backcrosses between such hybrids and the northernmost population of <i></i>subsp.<i> mexicana</i>, 'Nobogame Teosinte'.</p> | + | |discussion=<p><i>Zea mays </i>subsp.<i> mexicana</i> is a weedy taxon, native to upland Mexico. It is most abundant in the Meseta Central of the Mexican neo-volcanic plateau, at elevations of 1700-2500 m. It grows almost entirely in and around cornfields, and readily hybridizes with <i></i></i>subsp.<i><i> mays</i>. The long-day tolerant 'Northern Teosinte' is the result of a series of backcrosses between such hybrids and the northernmost population of <i></i></i>subsp.<i><i> mexicana</i>, 'Nobogame Teosinte'.</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/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V25/V25_1668.xml |
|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Andropogoneae | |tribe=Poaceae tribe Andropogoneae | ||
Revision as of 19:24, 24 September 2019
Culms (0.5)1-3 m tall, (0.5)1-2(3) cm thick, unbranched when growing in corn fields to branched and with staminate inflorescences terminating the many branches when growing in the open. Blades 30-85 cm long, 3-8 cm wide. Pistillate inflorescences 5-8(10) cm long, 0.6-0.8 cm thick, distichous, with 2 rows of spikelets embedded in the rachis; rachises disarticulating at maturity; fruitcases (6)9-12(15), 6-10 mm long, 4-6 mm wide, triangular in side view, with pointed apices. Caryopses concealed in the fruitcases. Staminate panicles with 1-35+ ascending to divergent, somewhat stiff, disarticulating branches; central axes of staminate panicles as slender as the lateral branches. Staminate spikelets (6.6)7.5-10.5 mm. 2n = 20.
Discussion
Zea mays subsp. mexicana is a weedy taxon, native to upland Mexico. It is most abundant in the Meseta Central of the Mexican neo-volcanic plateau, at elevations of 1700-2500 m. It grows almost entirely in and around cornfields, and readily hybridizes with subsp. mays. The long-day tolerant 'Northern Teosinte' is the result of a series of backcrosses between such hybrids and the northernmost population of subsp. mexicana, 'Nobogame Teosinte'.
Selected References
None.