Biology and Biotechnology of Environmental Stress Tolerance in Plants, Volume 3: Sustainable Approaches for

Enhan

Roychoudhury (Ed.)

© 202

ylor & Francis)

with CRC Press (Ta

nmental Stress Tole

ss, Inc

ca

cing Enviro

4 Apple A

demic Pre

rance. Aryadeep

. Co-published

CHAPTER 4

Role of Hydropriming and Magneto-

Priming in Developing Stress Tolerance

LEKSHMY SATHEE,^1* MEENAKSHI THAKUR,² RAVPREET KAUR,³

SUNITA KATARIA,⁴ ANJALI ANAND,¹ DALVEER SINGH,³ and

SHAILESH TRIPATHI³

1Division of Plant Physiology, ICAR–Indian Agricultural Research

Institute, New Delhi – 110012, India

2College of Horticulture and Forestry, Dr. Y.S. Parmar University of

Horticulture and Forestry, Neri, Himachal Pradesh, India

3Division of Genetics, ICAR–Indian Agricultural Research Institute,

New Delhi, India

4School of Biochemistry, DAVV, Indore, Madhya Pradesh, India

*Corresponding author. E-mail: [email protected]

ABSTRACT

Seed priming is a highly effective and low-cost seed enhancement technique

to improve germination, early vigor, growth, and yield of crop plants.

It reduces the time of seedling emergence and helps in the establishment

of a uniform crop stand. Several priming agents, such as water, inorganic

salts, sugars, micronutrients, plant hormones, and physical treatments with

ionizing/nonionizing radiation are used as seed priming agents. Seed priming

also confers plants with tolerance to various abiotic stresses. Primed seeds

invigorate the seed metabolism through the repair and synthesis of nucleic

acids and proteins. In hydro-priming, the seeds are soaked in water for a well-

defined period of time followed by drying to their original moisture level.