Seed Storage Overview

Principles

Definition

Seed storage is a field of scientific inquiry focused on the preservation of seeds over time. It investigates the complex biological processes and environmental parameters that govern seed viability and longevity. This research domain encompasses the development and evaluation of diverse storage methodologies, ranging from conventional dry storage protocols to advanced techniques like cryopreservation, aimed at maintaining genetic integrity and germination capacity for extended periods. Its significance is paramount for the ex situ conservation of plant genetic resources, underpinning global efforts in biodiversity preservation, agricultural sustainability, and providing essential materials for research and ecological restoration.

Ontological type

Viability Determinants

Core Methods

Genetic Resource Conservation

Key developments

Key Figures

Physiological Viability Foundations era

During the Physiological Viability Foundations era, seed physiologists such as Hartmann and Kester advanced the understanding of dormancy status, imbibition dynamics, and membrane integrity as primary determinants of storage survival. Their work helped move seed storage from passive conservation toward physiology-based protocols, linking moisture and temperature regimes to recoverable germination. J. Duncan Bewley, working along with Malcolm Black, refined concepts of dormancy release and vigor under storage, contributing to standardized vigor assays and viability tests that laboratories could implement. Together these authors established the era's emphasis on active seed physiology as the basis for predicting post-storage germination, shaping institutional testing and storage guidelines.

Mechanistic Longevity Modeling era

R. H. Ellis [1] operated within Harvard University [3] and the University of Reading [4] during this era. The quantification of ageing and survival in orthodox seeds [7] proposed a mechanistic framework for seed longevity, enabling deterioration rate estimation and cross-species comparisons. Timothy J. Close [2] is associated with California Institute of Technology [5] and the University of Minnesota [6] in this period. Dehydrins: Emergence of a biochemical role of a family of plant dehydration proteins [8] highlighted stress-responsive proteins' relevance to seed desiccation and longevity, informing mechanistic models of storage.

Applied Seed Technologies era

Representative authors for the Applied Seed Technologies era include Rita Khanna-Chopra, whose work on seed priming and osmopriming laid practical foundations for restoring vigor and extending storage windows. Marcel van der Heijden is another representative, whose seed-associated microbiome research informs the use of microbial inoculants and polymer-coated seeds to enhance stress resilience during storage. Khanna-Chopra's contributions in the 2000s defined osmotic priming regimens that improve post-storage germination under adverse conditions. Van der Heijden's work clarifies how seed microbiomes interact with coatings and storage interfaces to sustain longevity and promote robust field establishment, illustrating how laboratory aging metrics translate into scalable conservation and agricultural practice.