Jaya and Ratna developed for green revolution in India are the varieties of
Indian hybrid crops- Wheat and Rice -
During the period 1960 to 2000, wheat production increased from 11 million tonnes to 75 million tonnes while rice production went up from 35 million tonnes to 89.5 million tonnes
This was due to the development of semi-dwarf varieties of wheat and rice. This development as made by Nobel laureate Norman E. Borlaug, at International Centre for Wheat and Maize Improvement in Mexico.
'Jaya' and 'Ratna' are better-yielding semi-dwarf varieties of rice developed in India.