Write the names of two semi-dwarf and high yielding rice varieties developed in India after 1966.

Explanation

**Step-by-Step Solution:**

1. **Understand the Context**: The question asks for two semi-dwarf and high-yielding rice varieties developed in India after 1966. This period is significant as it coincides with the Green Revolution, which aimed to increase agricultural production.

2. **Identify Key Characteristics**: The varieties need to be semi-dwarf and high-yielding. Semi-dwarf varieties are shorter in stature, which helps in reducing lodging (falling over) and allows for better nutrient and water management.

3. **Recall Relevant Information**: During the Green Revolution, several high-yielding varieties of rice were developed in India to enhance food security.

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