A very time consuming and tedious process, is breeding a new genetic variety of a crop is:-

Options

A. Collection of variability
B. Cross hybridisation among the selected parents.
C. Selection and testing of superior recombinants.
D. Evaluation and selection of parents

Answer

### Step-by-Step Solution:

1. **Understanding the Process of Breeding**: Breeding a new genetic variety of a crop involves several steps, and it is known to be a time-consuming and tedious process.

2. **Collection of Variability**: The first step in breeding is the collection of genetic variability. This involves gathering diverse genetic materials from various wild varieties, species, and relatives of the crop species. This step is crucial for maintaining genetic diversity.

3. **Cross Hybridization**: The next step is cross hybridization among selected parents. This process involves combining desirable traits from two different parent plants to create hybrids. It is a meticulous process as it requires ensuring that pollen grains from the male parent successfully fertilize the ovules of the female parent.

4. **Selection and Testing of Superior Recombinants**: After hybridization, the resulting plants (recombinants) are tested to identify those that exhibit superior traits. This selection process is critical for developing a new variety that has the desired characteristics.

5. **Evaluation and Selection of Parents**: Finally, the evaluation of the selected plants is done to determine which parents will be used for future breeding cycles. This step ensures that the best genetic traits are preserved and enhanced in subsequent generations.

6. **Conclusion**: The entire process, especially the cross hybridization step, is what makes breeding a new genetic variety of a crop very time-consuming and tedious.

### Final Answer:
The correct answer to the question is **cross hybridization among the selected parents**.

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