Improved variestes of wheat suitable for indian climates have been delveloped by

Options

A. hybridisation and mutation
B. mutation and cloning
C. cloning of polypolids
D. polyploidy and hybridisation

Answer

### Step-by-Step Solution

1. **Understanding the Question**: The question asks about the methods used to develop improved varieties of wheat that are suitable for Indian climates.

2. **Identifying Techniques**: The primary techniques mentioned for developing improved varieties of wheat are hybridization and mutation.

3. **Hybridization Explained**: Hybridization involves crossing two parent plants (A and B) that possess different desirable traits. The goal is to produce a progeny that inherits the best traits from both parents.

4. **Mutation Explained**: Mutation refers to the changes in the genetic makeup of an organism. Induced mutations can lead to new traits that may enhance the characteristics of the wheat, such as disease resistance or better yield.

5. **Combining Techniques**: Both hybridization and mutation can be used in conjunction to create new hybrids that are better suited for specific environmental conditions, such as those found in India.

6. **Conclusion**: The improved varieties of wheat suitable for Indian climates have been developed through the techniques of hybridization and mutation.

### Final Answer
Improved varieties of wheat suitable for Indian climates have been developed by **hybridization and mutation**.

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