Haploid Production via Anther Culture

The creation of haploid plants, which have half the number of chromosomes found in normal somatic cells, is a significant advancement in plant science. This is often achieved through techniques like anther culture and pollen culture, where immature pollen grains or anthers are cultured under specific laboratory conditions to develop into haploid embryos and subsequently, haploid plants.

Discovery of Haploid Production Methods

The pioneering work demonstrating the successful production of haploids using anther and pollen culture was carried out by Indian scientists S. C. Maheshwari and N. S. Guha. They achieved this significant breakthrough, laying the foundation for many subsequent studies in plant haploid breeding.

Key Research Contributions

The contributions of Maheswari and Guha were crucial in establishing the viability of inducing haploid development from microspores. Their research showed that:

• Anthers and pollen could be cultured in vitro.
• These cultured tissues could differentiate and develop into haploid embryos or calli.
• These embryos/calli could further regenerate into complete haploid plants.

This method is valuable because haploid plants can be quickly converted into homozygous diploid plants through chromosome doubling, which significantly speeds up breeding programs for developing new crop varieties.

Understanding the Options

Let's look at the provided options in the context of this discovery:

• Maheswari and Guha: Recognized for the first demonstration of haploid production through anther and pollen culture.
• Ravi and Chan: While researchers in plant biology, they are not credited with this specific initial discovery.
• Kasha and Kao: Notable contributors to plant tissue culture, particularly anther culture in rice, but followed the initial work.
• Clausen and Cameron: Known for work in cytology and genetics, but not primarily for the initial demonstration of anther/pollen culture for haploids.

Therefore, the correct attribution for the first demonstration of haploid production by anther and pollen culture lies with Maheswari and Guha.