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- Title
Physiological and Biological Responses of Ca<sup>2+</sup>-Primed Quinoa Seed Longevity Stored at Different Hermetic Storage Conditions.
- Authors
Mamedi, Arash; Sharifzadeh, Farzad; Maali-Amiri, Reza; Divargar, Fatemeh
- Abstract
Longevity, viability, vigor, and priming-memory are a complex network of agronomic traits that influences the capacity of seed germination and seedling development. Seed priming is a physiological method to improve germination performance under adverse environmental conditions, but the decrease in the longevity of primed seed during storage may limit its application. Therefore this study aimed to determine optimal storage condition for Ca2+-primed seeds. Here, the species-specific constants of viability and underlying seed protective mechanisms were determined for Ca2+-primed seeds under different storage conditions. Based on probit analysis of the survival data, the predicted physiological parameters of σ, P50, σ−1, Ki, CW, CH, KE, and seed vigor index for Ca2+-primed seeds were more similar to those determined for control seeds, suggesting the regulatory role of Ca2+ in controlling sustainable storability of the primed seeds. The loss of seed viability was accompanied by high accumulation of H2O2, causing oxidative damage, which results in lipid peroxidation (MDA), corresponding to higher leakage of seed leachate. The accumulation of antioxidant metabolites, activities of antioxidant enzymes, α-amylase activity, and soluble sugars content were more pronounced in seeds exposed to low storage T with less MC, leading to a better tolerance responses against deteriorative effects of aging. Hence, the findings of this study could be practical implications for managing the longevity of quinoa seeds and for adoption of the Ca2+-priming method on an agri-seed industry level to ensure ecological stability and global food security under current climate change scenarios.
- Subjects
QUINOA; SEED viability; LONGEVITY; SEED storage; PROBIT analysis; GERMINATION; FOOD security; STORAGE
- Publication
Journal of Plant Growth Regulation, 2024, Vol 43, Issue 6, p1967
- ISSN
0721-7595
- Publication type
Article
- DOI
10.1007/s00344-024-11236-8