Male sterile lines were first discovered in

Options

A. Wheat
B. Maize
C. Onine
D. Sunflower

Answer

**Step-by-Step Solution:**

1. **Understanding Male Sterility:**
- Male sterility refers to the condition where a male organism (in this case, a plant) is unable to produce functional pollen grains, which are necessary for fertilization.

2. **Defining Male Sterility in Plants:**
- In plants, male sterility can be characterized by the presence of non-functional pollen grains or the incapability of the plant to produce these functional pollen grains.

3. **Importance of Pollen Grains:**
- Pollen grains are crucial for fertilization as they carry the male gametes. If a plant cannot produce functional pollen, it cannot fertilize the ovules, leading to male sterility.

4. **Identifying the First Discovery:**
- The question specifically asks where male sterile lines were first discovered. The transcript indicates that this condition is commonly observed in maize (corn).

5. **Conclusion:**
- Based on the information provided, the correct answer to the question is that male sterile lines were first discovered in maize.

**Final Answer:**
- Male sterile lines were first discovered in maize.

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