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Semi-dwarf rice varieties in India were derived from IR-8, developed at:

AIARI New Delhi
BCIMMYT Mexico
CTaichung Taiwan
DIRRI Philippines
Answer & Solution
Correct answer: D. IRRI Philippines
1. Taichung Native-1 came from Taiwan. 2. IR-8 came from IRRI in the Philippines. 3. Derivatives were introduced in 1966. _Source: syllabus Biology, Chapter 9, Strategies for Enhancement in Food Production._
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