A technique of androgenic haploid formation was developed by

Options

A. Carison et. al.
B. Guha and Maheshwari
C. Skoog and Miller
D. Steward et.al.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the developers of a technique for androgenic haploid formation.

2. **Identifying Key Terms:**
- Androgenic haploid formation: This refers to the process of producing haploid individuals from anthers, which is a part of plant reproductive structures.
- Anther culture technique: This is the method used to achieve androgenic haploid formation.

3. **Researching the Developers:**
The options provided include:
- Garrison et al
- Guha and Maheshwari
- Soog and Miller
- Stewart et al

4. **Finding the Correct Answer:**
The technique of androgenic haploid formation was developed by Guha and Maheshwari in the year 1964.

5. **Explaining the Technique:**
- The anther culture technique allows for the production of haploid individuals in a laboratory setting.
- It has been successfully applied to species like barley and tobacco, which are known to be responsive to doubled haploid production.
- Haploid embryos can be produced through in vitro methods, including parthenogenesis, where an individual is formed from an egg without fertilization.

6. **Conclusion:**
Therefore, the correct answer to the question is Guha and Maheshwari.