Page 272 - e-Book

Indole-3-Acetic Acid Mediated Morphological And Physiological

Parameters Of Silybum Marianum (L.) Gaertn.

3*
2
1
Savita Bhardwaj , Arti Sharma , Bharat Kapoor and Dhriti Kapoor 1*

1 Department of Botany, School of Bioengineering and Biosciences, Lovely Professional

University, Phagwara, 144411, Punjab, India
2 Division Botany, Department of Bio-Sciences, Career Point University, Hamirpur, 176041,

Himachal Pradesh, India

3 Department of Hotel Management and Tourism, Guru Nanak Dev University, Amritsar,
Punjab, India

*Email of corresponding authors: dhriti405@gmail.com, bharatkapoor22@gmail.com

ABSTRACT
Medicinal herbs contain a number of active compounds that can be practiced for various

therapeutic purposes or for the production of several precious medicines. Plant growth

regulators (PGRs) have a crucial character in maintaining optimal functioning of plants.
Present research was carried out to study the influence of the PGR viz., Indole 3 acetic acid

(IAA) on morphological parameters (root length, leaf area, number of leaves, fresh and dry

weight), and physiological parameters (chlorophyll, phenolic and flavonoids) in Silybum
marianum. IAA were sprayed at the concentrations of 25, 50 and 100 ppm after 10 days

interval on leaves and stem of Silybum marianum. PGR caused significant increase in root
length, leaf area, number of leaves, fresh and dry weight, total chlorophyll, phenolic and

flavonoid content of plant in comparison to control plants. Overall, it was concluded that
exogenous application of IAA in Silybum marianum was found to be beneficial in promoting

growth, and physiological responses of the plant.

Keywords: Growth, morphological, IAA, Silybum marianum.
INTRODUCTION

Globally, plants are among the major assets which are used in present as well as
traditional systems of medicine. Medicinal plants have a major role in the socio-cultural,

spiritual and medical requirements of people. The synthetic drugs of the modern times are
used more in comparison to herbal drugs but now use of synthetic drugs is reduced and

people are now using the herbal products frequently (Rajkumar et al., 2012). Medicinal herbs

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