Jaya and Ratna are the Semidwarf Varieties of

Answer: In India, the semi-dwarf rice cultivars Jaya and Ratna were produced. Due to the introduction of these semi-dwarf cultivars, rice output in India grew from 35 million tonnes to 89.5 million tonnes, from 35 million tonnes.

The dwarfing gene in rice was first found in Taiwan and it was called dee-geo-woo-gene. This gene was transferred into rice varieties, and IRRI in the Philippines generated high-yielding IR-8 and IR-24 types.