Greater genetic varibility can be created in the plants through.

Options

A. Mass selection and Clonal selection
B. Pure line selection and Clonal selection
C. Pure line selection and Mass selection
D. Hybridizationand Mutation breeding

Answer

To answer the question "Greater genetic variability can be created in the plants through," we need to analyze the provided options and understand the concepts of genetic variability and the techniques used to enhance it.

### Step-by-Step Solution:

1. **Understanding Genetic Variability**:
- Genetic variability refers to the diversity in gene frequencies within a population. It is crucial for the adaptability and survival of species, as it allows for a range of traits that can be beneficial in changing environments.

2. **Evaluating the Options**:
- The options provided are:
a) Mass selection and clonal selection
b) Pure line selection and clonal selection
c) Pure line selection and mass selection
d) Hybridization and mutation breeding

3. **Analyzing Each Technique**:
- **Mass Selection**: This involves selecting the best individuals from a population based on their performance. It can increase genetic variability but is not the most effective method for creating greater variability.
- **Clonal Selection**: This technique involves selecting clones (genetically identical plants) from a mixed variety. While it can maintain certain desirable traits, it does not significantly increase genetic variability.
- **Pure Line Selection**: This method focuses on selecting the best individuals to maintain a pure line. It is effective for consistency but does not enhance genetic variability.
- **Hybridization**: This involves crossing different varieties to produce hybrids with desirable traits. This method can introduce new genetic combinations.
- **Mutation Breeding**: This technique involves inducing mutations to create new traits. It can lead to significant changes and enhance genetic variability.

4. **Conclusion**:
- Among the options, **hybridization and mutation breeding** are the most effective techniques for creating greater genetic variability in plants. They allow for the introduction of new traits and combinations that can enhance adaptability and productivity.

### Final Answer:
Greater genetic variability can be created in plants through **hybridization and mutation breeding**.

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