Question

Semidwarf wheat and rice were developed by the use of
A. Norin 10 (Rht genes), B. Taichung Native 1 (TN 1), C. Norin 10 and Taichung Native 1, D. ppd1, E. ppd2.

• A. A Only
• B. B and E Only
• C. C Only
• D. D and E Only

Hint:

Norin 10 is associated with semidwarf wheat, while Taichung Native 1 is associated with semidwarf rice.

Answer 1

The Correct Option is C

Concept:
Semidwarf varieties played an important role in the Green Revolution. Dwarfing genes helped to develop short, lodging-resistant and high-yielding varieties.

Step 1: Semidwarf wheat.
Norin 10 is an important source of dwarfing genes in wheat. \[ \text{Norin 10} \rightarrow \text{Semidwarf wheat} \]

Step 2: Semidwarf rice.
Taichung Native 1 is an important semidwarf rice variety. \[ \text{Taichung Native 1} \rightarrow \text{Semidwarf rice} \]

Step 3: Combined statement.
The correct combination for semidwarf wheat and rice is: \[ \text{Norin 10 and Taichung Native 1} \] This is represented by statement C. \[ \therefore \text{Correct Answer is (C)} \]