Select the incorrect statement(s) (w.r.t semi-dwarf varieties of wheat)

Options

A. Developed by Norman E. Borlaug
B. Developed at international Centre for Wheat and Maize Improvement in Mexico
C. These varieties were derived from IR - 8
D. Responsible for green revolution

Answer

To determine the incorrect statement(s) regarding semi-dwarf varieties of wheat, let’s analyze each option step by step:

1. **Option 1: Developed by Norman E. Borlaug.**
- **Analysis:** Norman E. Borlaug is indeed credited with developing semi-dwarf varieties of wheat, which played a significant role in the Green Revolution. This statement is correct.

2. **Option 2: Developed at the International Center for the Wheat and Maize Improvement in Mexico.**
- **Analysis:** The semi-dwarf varieties of wheat were developed at the International Center for the Wheat and Maize Improvement (CIMMYT) in Mexico. This statement is also correct.

3. **Option 3: These varieties are derived from the IR8.**
- **Analysis:** IR8 is a semi-dwarf variety of rice, not wheat. Therefore, this statement is incorrect as semi-dwarf wheat varieties are not derived from IR8.

4. **Option 4: Responsible for the Green Revolution.**
- **Analysis:** The development of semi-dwarf wheat varieties was indeed a key factor in the Green Revolution, which significantly increased food production. This statement is correct.

**Conclusion:**
The only incorrect statement is **Option 3: These varieties are derived from the IR8.**