First hybrid varieties of some agricultural crops

Crop	Release Year	First Hybrid Variety
Maize	1921	Ganga-1
Sorghum	1964	CSH-1
Pearl millet	1963	HB-1
Castor	1968	GCH-3
Cotton	1970	H-4
Rice (IRRI)	1972	PRH-10
Rice (India)	1994	CORH-1
Pigeonpea	1991	ICPH-8
Mustard	—	NRC-HB-506
Tobacco	—	GTH-1