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  • 1717: Thomas Fairchild produced the first artificial hybrid popularly known as
    Fairchild’s mule by crossing carnation with sweet William
  • Dwarfing gene in rice – Dee-Gee-Woo-Gen (Japonica rice, Taiwan)
  •  Dwarfing gene in wheat – Norin 10 (Japanese variety)
  •  Tift 23 A – source of Cytoplasmic male sterility in pearl millet
  •  Kafir 60 – source of CMS in sorghum
  • Non-traditional area of wheat cultivation – West Bengal
  •  Non-traditional area of Rice cultivation – Punjab
  • Gregg 399 is an important source of genetic male sterility in cotton
  •  Exotic varieties of wheat – Sonara 64 and Lerma Rojo
  • Wheat variety resistant to all the three rust – sparrow
  • Wheat variety susceptible to all the three rust – Agra Local
  • Exotic varieties of Rice – Taichung Native 1 (TN1), IR 8 introduced in India in 1966
  • Autotriploid (3x) – E.g. banana
  • Triploid – Apples, Watermelons, sugar beets
  • Autotetraploid – potato
  • Autopolyploid – ornamental plants, sweet potato, oat, alfalfa
  •  Allopolyploids – wheat, tobacco, cotton, sugarcane, rapeseed etc
  •  Allohexaploid – common bread wheat (Triticum aestivum)
  • Allotetraploids – cotton and tobacco
  • Man made cereal – Triticale (rye ×wheat)
  • Maize is called the ‘Drosophila of crop plants’
  •  Examples of secondary introduction – wheat: kalyan Sona and Sonalika selected
    from introductions from CIMMYT

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