Unformatted text preview: le flower (silk) A well developed ear shoot should A well developed ear shoot should have 750 to 1,000 ovules (potential kernels) each producing a silk. Each tassel contains from 2 to 5 million pollen grains which translates to 2,000 to 5,000 pollen grains produced for each silk of the ear shoot. Depending on the corn type a typical ear may contain as few as 200 to 400 kernels. Poor Pollination
Poor Kernels at ear tip were not pollinated
and/or aborted. Selective breeding modified teosinte's few
fruitcases (left) into modern corn's rows of
exposed kernels (right).
exposed Seeds from domestic crops (inner circle) are usually
larger, lighter in color, and more uniform than their wild
relatives. Clockwise from top: Peanuts, corn, rice, coffee,
soybean, hops, pistachio, and sorghum.
soybean, Plant molecular biologist pollinates corn
during experiments to map virus resistance.
during Corn roots from plots that have been infested with
western corn rootworm. The non-transgenic root on the
right shows considerable pest damage.
right Bt Corn can control earworm without sprays
Bt Corn can control earworm without sprays Sorting and cleaning maize seeds
at a gene-bank.
at Maize seeds in long term storage at
gene-bank. When Columbus landed in the West Indies, When Columbus landed in the West Indies, the Indians gave him corn to take home to Spain. From there, corn spread quickly throughout Europe and the rest of the world. The earliest settlers in this country might have died during their first winter if the Indians hadn't given them corn to cook and eat. The Indians also showed the settlers how to grow corn. They dug holes in the ground, dropped in some kernels and small fish, and covered them. The fish were used to fertilize the soil. The Indians already had numerous The Indians already had numerous ways for preparing corn which they shared with the settlers. Corn was made into bread, porridge, soup, fried corn cakes, and pudding. Corn was so valuable that the settlers used it instead of money. They traded it with the Indians for food and furs. Corn or maize...
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- Fall '11
- Maize, Teosinte