• Shinde S.Y
• Sirsath D.B

Hormones promote growth within plants. Plant hormones are unequally distributed throughout the stems and roots, which results in parts of the plant growing in a particular direction. Some chemicals occurring naturally within plant tissues have a regulatory, rather than a nutritional role in growth and development. These compounds are generally active at very low concentrations, are known as plant hormones or plant growth substances. Some of the natural growth substances are prepared synthetically or through fermentation processes and can be purchased from chemical suppliers. When these chemicals have been added to plant tissue culture media, they are termed plant growth regulators in this book, to indicate the fact that they have been applied from outside the tissues (i.e. exogenously). Auxins are the most important for regulating growth and morphogenesis in plant tissue and organ cultures. These synthetic regulators have been discovered with a biological activity, which equals or exceeds that of the equivalent natural growth substances.These however, can also affect the synthesis of other classes of hormone or growth regulator such as abscisic acid, sterols or brassinosteroids. The Present article focused on the uses and other physiological effects of Auxin.

Plant Growth Rgulators (PGR), Auxin, Synthetic Chemicals, Brassinosteriods etc.

"Auxin: Most Useful Plant Growth Regulator in the field of Agriculture", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 12, page no.332-337, December-2021, Available :http://www.jetir.org/papers/JETIRFI06059.pdf

"Auxin: Most Useful Plant Growth Regulator in the field of Agriculture", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 12, page no. pp332-337, December-2021, Available at : http://www.jetir.org/papers/JETIRFI06059.pdf