- 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
