Effect of Seed Hydropriming on the Elongation of Plumule and Radicle During the Germination Process and Changes in Enzyme Activity Under Water-Deficient Conditions

Hydropriming rice seeds effectively improve the germination percentage, shortens the germination period, and promotes seedling growth. The impact of seed hydropriming is to speed up growth under dry soil conditions, thereby avoiding drought damage. This study analyzes the effect of hydropriming on m...

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Bibliographic Details
Published in:Plants (Basel) 2024-12, Vol.13 (24), p.3537
Main Authors: Choi, Ju-Young, Ju, Young-Hwan, Nakamichi, Ayaka, Cho, Seong-Woo, Woo, Sun-Hee, Sakagami, Jun-Ichi
Format: Article
Language:English
Subjects:
Amylases
Analysis
Coleoptile
Drought
Embryos
Enzymatic activity
Enzyme activity
Enzymes
Germination
germination phase
hydropriming
Impact analysis
Metabolism
Oryza sativa
Osmotic stress
Physiological aspects
Physiological effects
Physiology
Polyethylene glycol
Respiration
Rice
Seedlings
Seeds
Soil analysis
Soil conditions
Soil water
Sugar
Water
Water damage
Water shortages
Water uptake
α-Amylase
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Summary:Hydropriming rice seeds effectively improve the germination percentage, shortens the germination period, and promotes seedling growth. The impact of seed hydropriming is to speed up growth under dry soil conditions, thereby avoiding drought damage. This study analyzes the effect of hydropriming on morpho-physiological changes in the water uptake of rice seeds using “Kasalath” and “Nipponbare” under water-deficit conditions. Upon exposure to osmotic stress, both varieties showed delays in the time to reach germination. In addition, all germination phases exhibited reductions in the activity of alpha-amylase and total soluble sugar by osmotic stress; however, in all germination phases of the hydroprimed seeds, the activity and contents of those were significantly increased, resulting in increased size of the coleoptile, plumule, and radicle. In hydroprimed seeds, “Kasalath” was superior to “Nipponbare” in the ratio of the water-deficit-to-well-watered conditions for all traits related to germination, which may have been attributable to hydropriming having a greater effect on “Kasalath”. Interestingly, Primed “Kasalath” had a lower level of α-amylase, despite the having a higher content of total soluble sugars than primed “Nipponbare”.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants13243537