The majority of high-yielding varieties of 'I | vedclass

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(A) The high-yielding varieties of Indian rice,such as $IR$-$8$ and its derivatives,were developed by crossing the semi-dwarf variety $O. sativa japon

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$O. sativa japonica 	imes O. sativa indica$

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(A) The high-yielding varieties of Indian rice,such as $IR$-$8$ and its derivatives,were developed by crossing the semi-dwarf variety $O. sativa japonica$ (specifically the variety 'Dee-geo-woo-gen') with the tall,traditional Indian variety $O. sativa indica$. This cross combined the high yield and short stature of the japonica type with the adaptability and grain quality of the indica type.

The majority of high-yielding varieties of 'Indian rice' have been developed by crossing which of the following?

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