1 / 25

More on Maize and Its Growth

More on Maize and Its Growth. Corn or Maize – Zea mays. Zea mays subsp. mexicana. Zea mays subsp. mays. Variation in ear size and kernel color from Mexican landraces of corn. Steps from Teosinte to Maize.

josh
Télécharger la présentation

More on Maize and Its Growth

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. More on Maize and Its Growth

  2. Corn or Maize – Zea mays

  3. Zea mays subsp. mexicana Zea mays subsp. mays

  4. Variation in ear size and kernel color fromMexican landraces of corn

  5. Steps from Teosinte to Maize • Maize cobs do not shatter (fall apart) whereas teosinte ears shatter when mature • Each teosinte grain is netled in a hard, deep floral structure the cupule and covered by a hard sheath (the glume). The grains of corn are naked and held outside a collapsed cupule • Each teosintecupule contains a single fertile spikelet; maize cupules have two fertile spikelets • Teosinte cupules are arranged in 2 ranks (rows) but maize are in 4 to 10 rows • Teosinte has long primary branches that each ends in a male tassel and there are numerous tiny ears along each branch. Maize has short primary branches that end in a single ear – only a few ears per plant; male tassel at apex of plant

  6. Hugh Iltis – then and now

  7. Apical dominance

  8. Apical dominance

  9. Apical dominance

  10. Teosinte to Maize

  11. Feminized Tassels

  12. Feminized Tassels

  13. Sweet Corn Traditions

  14. Boiling Sweet Corn

  15. Traditional Consumption

  16. Grilling Sweet Corn

  17. Traditional Pop Corn Variety

  18. Corn Popping

  19. Squanto and Pilgrims

  20. North Eastern Native American Groups

  21. Three Sisters Mound System

  22. Three Sisters Mound System

  23. Three Sisters Planting Scheme

  24. Benefits of Three Sisters Mounds • In the Northeast where ground was frequently cold and damp in early spring, mounds allowed the soil to warm up and drain more quickly • Mounds allowed an increase in soil organic matter by repeatedly incorporating dead plant material with soil in mounds • Decomposition of dead plant material increased soil nutrients; also growing beans which are N-fixers increased soil N for all plants in the mound • Mounds minimized soil compaction (people did not walk on mounds, but around them) and reduced soil erosion as fields were not constantly plowed or dug up • Mound system allowed easy regulation of plant spacing and plant populations

More Related