The conventional method of breeding for disease resistance is that of______and______

Answer

**Step-by-Step Solution:**

1. **Identify the Conventional Methods**: The conventional methods of breeding for disease resistance in plants are hybridization and selection.

2. **Define Hybridization**: Hybridization is the process of crossing two different varieties or species to produce a new variety that possesses desirable traits from both parents, including disease resistance.

3. **Define Selection**: Selection involves choosing the best individuals from a population based on specific traits, such as resistance to diseases, and using them for further breeding.

4. **Outline the Steps in Breeding**:
- **Screening of Germplasm**: The first step involves screening the available germplasm to identify sources of disease resistance.
- **Hybridization of Selected Parents**: After identifying resistant sources, the next step is to hybridize these selected parents to create new hybrids.
- **Selection and Evaluation of Hybrids**: The hybrids produced are then evaluated for their disease resistance and other desirable traits.
- **Testing and Release of New Variety**: Finally, the successful hybrids are tested and, if they meet the necessary criteria, released as new varieties for cultivation.

**Final Answer**: The conventional method of breeding for disease resistance is that of **hybridization and selection**.

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