En savoir plus sur l’agriculture

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OGM : de quoi s’agit-il? Peuvent-ils être consommés en toute sécurité? Qu’est-ce que l’agriculture biologique? Comment les animaux comme les poulets ou les bovins sont-ils élevés?

snapAG offre aux élèves et aux étudiants des ressources sur des sujets d’actualité liés à l’industrie agricole, comme les produits biologiques, les biotechnologies, les OGM, l’élevage, et plus encore. 

Explorez les tendances de l’agriculture au Canada en parcourant les rubriques ci-dessous.

History of Plant Breeding

History of Plant Breeding

Summary: Did you know the cultivation of the first crops led to the first permanent settlements? Plant domestication started some 10,000 years ago by farmers selecting the best performing plants in a field.

The evolution of Corn

Thousands of years ago, farmers discovered teosinte with soft-shelled seeds, six to a dozen per set, that were good to eat. They started replanting this teosinte and over many years, added varieties with more than one row of seeds.

Today, the great, great grandchild of this Mexican grass can have cobs 30 centimeters long, each carrying more than 500 seeds. It is corn, one of the most important crops in the world.

Understanding Genetics.

Our modern understanding of how traits may be inherited comes from three principles of inheritance proposed by Gregor Mendel in 1865:

  • that inheritance of each trait is determined by "units" that are passed on to descendants unchanged (now called genes)
  • that an individual inherits one such unit from each parent for each trait
  • that a trait may not show up in an individual but can still be passed on to the next generation.

Les références

References:

What is Teosinte? (University of Wisconsin)

Teosinte (Native Seeds)

Corn (Encyclopaedia Britannica)

Twentieth Century Regional Climate Change During the Summer in the Central United States Attributed to Agricultural Intensification (Geophysical Research Letters)

The United States’ Corn Belt is making its own weather (Science)

Marquis wheat (Canadian Encyclopedia)

The Mystery of Mr. McIntosh's Apple (Canada's History)

Canadian Apple Industry - Varieties by Province (Agriculture and Agri-Food Canada)

Summerland - History The 20s and 30s (Spartan apple) (Agriculture and Agri-Food Canada)

Nova Scotia genetics researcher revolutionizing apple agriculture (Canadian Geographic)

Apple Diversity Group, Dalhousie University

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