Step 1: Concept Overview:
This question concerns a pivotal historical achievement in plant tissue culture. It requires identifying the scientists who pioneered the successful generation of haploid plants via anther and pollen culture methods.
Step 2: In-Depth Analysis:
Sipra Guha and Satish C. Maheshwari, two Indian scientists, are credited with the pioneering work on haploid production through anther in vitro culture.
In 1964, they documented the direct formation of embryos from Datura innoxia microspores (thorn apple) by culturing excised anthers.
This finding marked a key advancement in plant biotechnology, providing a quick pathway for creating homozygous diploid lines by doubling the chromosomes of haploids, greatly accelerating breeding processes.
The other listed scientists are recognized for different contributions, not this specific breakthrough.
Step 3: Conclusion:
Maheswari and Guha first demonstrated haploid production via anther culture.