Seed priming technology in spice crops: A review

Abstract

Seed priming is one of the important method of seed treatment is the process of controlled hydration of seeds. At the time to a level that permits the pre-germinative metabolic activity, but that prevents actual emergence of the radicle is also known as pre germination seed treatment method. Seed priming is useful for increase the speed of seed germination and uniformity of germination particularly under adverse conditions like temperature, moisture and salinity. Seeds are soaked in different solutions like various inorganic salts, sugars and polyethylene glycol (PEG) a chemically inert, high molecular weight compounds, etc. After seed priming increase in hydrolytic enzyme activity especially a-amylase, strong increase of super oxide dismutase, catalase activities and expression of certain proteins related to water stress and heat shock. During germination the primed seeds contain higher scavenging of ROS (Reactive Oxygen Species). This reviews reported the primed spices seeds or rhizomes contain abiotic stress tolerant capacities, increase the antioxidant enzyme activities like peroxidase, catalase, superoxide dismutase (SOD), polyphenol oxidase (PPO), lipoxygenase (LOX) and phenyl alanine ammonia lyase (PAL), break the seed dormancy, increase the germination percentage and early growth. This studies gives an overview about the seed priming in spice crops with relevant case studies.

Solid Matrix Priming: An Effective Technique Used for Improvement in Seed Emergence, Vigor and Seedling Growth of Vegetable Crops

“…Solid material used for carrier must have low water solubility, high bulk density and bulk value with high matric to osmotic component capacity and water holding capacity. All these properties minimize problems of aeration in solid matrix (Arunkumar et al, 2019). They have large surface area, non-toxic to seed and has high ability to stick to seed surface (Raj and Raj, 2019).…”

Effect of Priming on Seed Germination and Seedling Growth of Cardamom (<i>Elletaria cardamomum</i> L. Maton) at Teppi, Southwestern Ethiopia

“…Seed priming is one of the pre-sowing seed treatments that is applied to fasten germination, achieve uniform emergence, and boost seedling vigor [14]. According to Basra et al [15] and Ashraf and Foolad [16], there are numerous ways to prime seeds, including hydro-priming, hormone priming, osmo-priming, and bio-priming.…”