Influence of Seed Membrane Integrity on Nutrient Retention in Aged Brassica Seeds

This study examines the role of seed membrane integrity in maintaining nutrient levels specifically nitrogen (N), potassium (K), and calcium (Ca) in aged seeds of Brassica species. Seed longevity and the preservation of nutrients are essential for agricultural productivity, as the loss of nutrients during storage can reduce seed viability and negatively impact crop performance. Despite the global significance of Brassica crops, the association between membrane integrity and nutrient retention has not been extensively studied. In this research, six Brassica varieties were subjected to controlled ageing conditions to evaluate the effects of membrane degradation on nutrient levels. The findings show a significant decline in nutrient levels in aged seeds. Nitrogen retention decreased from 2.08%– 2.81% in fresh seeds to 1.93%–2.23% in aged seeds, while calcium levels fell from 0.40%–1.03% to 0.38%– 0.91% (p < 0.05). Potassium levels also decreased, from 0.64%–4.34% in fresh seeds to 0.53%–3.45% in aged seeds, but potassium showed comparatively better retention than nitrogen and calcium. However, the varieties M-27 and TS-36 show higher potassium retention, signifying that they have greater membrane stability. These results reveal the importance of membrane integrity in preserving nutrient levels, offering valuable insights specific to Brassica seeds. They also highlight the need for improved storage strategies, such as maintaining low humidity and temperature control, to minimize nutrient losses. Additionally, the findings suggest that osmopriming and breeding for enhanced membrane resilience could be effective strategies for improving nutrient retention. These approaches are essential for ensuring seed quality and promoting sustainable agricultural practices. Further research should explore broader Brassica varietal responses under diverse storage scenarios to refine and expand conservation practices.