_______was dependent to a large extent on plant breeding techniques for development of high yielding and disease resistant varieties of wheat, rice, maize etc.

Answer

**Step-by-Step Solution:**

1. **Identify the Context**: The question asks for a term that refers to a significant agricultural movement that relied heavily on plant breeding techniques.

2. **Recall Relevant Historical Events**: The Green Revolution is a well-known agricultural movement that occurred primarily between the 1950s and 1960s.

3. **Understand the Objectives of the Green Revolution**: The main goals of the Green Revolution were to increase food production through the development of high-yielding and disease-resistant varieties of staple crops such as wheat, rice, and maize.

4. **Link Plant Breeding Techniques to the Green Revolution**: The success of the Green Revolution was largely due to advancements in plant breeding techniques, which allowed for the creation of these improved crop varieties.

5. **Conclude with the Answer**: Therefore, the term that fits in the blank is "Green Revolution."

**Final Answer**: Green Revolution

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