Where is the International Rice Research Institute $(IRRI)$ located?

  • A
    Hyderabad
  • B
    Manila (Philippines)
  • C
    New York
  • D
    Tokyo (Japan)

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Which of the following is not used for crop improvement?

What does hybrid vigor (heterosis) involve?

Which plant shows resistance to stem borer insects?

Match the crop variety with its respective disease resistance:
List-$I$ (Crop Variety)List-$II$ (Disease Resistance)
$(a)$ Himgiri$(1)$ White rust
$(b)$ Pusa Komal$(2)$ Black rot
$(c)$ Pusa Snowball $K-1$$(3)$ Bacterial blight
$(d)$ Pusa Swarnim
$(4)$ Hill bunt

Mating between two individuals differing in genotype to produce genetic variation is called:

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