The first miracle rice IR8 was produced in 1966 at International Rice Research Institute (IRRI), Philippines involving the cross between two parents
Show Hint
- Dee Geo Woo Gen x Peta
- Peta x Zizaniapalustris
- Indica x Japonica
- TN1 x IR b
The Correct Option is A
Solution and Explanation
The Green Revolution in rice was enabled by incorporating the semi-dwarf sd-1 dwarfing gene into high-yielding tropical germplasm.
Step 2: Detailed Explanation:
IR8 (dubbed the 'Miracle Rice') was developed at IRRI, Philippines, by crossing 'Dee-Geo-Woo-Gen' (DGWG), a semi-dwarf, lodging-resistant indica variety from Taiwan containing the sd-1 gene, with 'Peta', a tall, vigorous, high-tillering indica variety from Indonesia.
Released in 1966, IR8 possessed erect leaves, photo-insensitivity, high nitrogen responsiveness, and doubled tropical rice yields.
Step 3: Final Answer:
Therefore, IR8 was produced from the cross Dee Geo Woo Gen x Peta.
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