Biochemical changes in naturally aged seeds of soybean genotypes with good and poor storability

Abstract

Seed deterioration during storage is associated with various metabolic and chemical alterations that vary among genotypes in soybean. In the present study, five genotypes with good storability viz., kalitur, MACS 1416, EC 18761, CO1 and DSB21 and five genotypes with poor storability viz., JS 71-05, DS 228, MAUS 61, NRC 93 and DSB 24 were selected and evaluated for biochemical changes to identify the best donors for storability. Among the genotypes, all the poor storer genotypes showed faster accumulation of free amino acids, free fatty acids and malondialdehyde content as a result of oxidative stress. Poor storer genotypes also showed the increased lipoxygenase I and II enzymes activity. All the good storer genotypes showed higher anti-oxidative enzymes activity causing slower lipid peroxidation. Among the good storers, kalitur showed favourable biochemical features for storability while MAUS-61 was identified as poor storer exhibiting less favourable biochemical features.

Seed Longevity and Its Association with Agronomic Traits in Soybean [Glycine max (L.) Merrill]

“…Additionally, its genotypes differ in their ability to maintain seed longevity (W ine and Kueneman, 1981;Khare et al 1996). Seed deterioration during storage is also associated with various metabolic and chemical alterations that vary among genotypes in soybean (Vijayakumar et al, 2019). Seed longevity is a complex trait hence it often remains a barrier in breeding programs.…”

Insights into mechanisms of seed longevity in soybean: a review

“…During accelerated ageing, lipid peroxidation causes loss of free radical scavengers resulting in seed deterioration (Bailly et al, 1998). Soybean genotypes with higher longevity recorded greater lipoxygenase II and antioxidative enzymatic activities that lessened lipid peroxidation and improved viability throughout storage (Vijayakumar et al, 2019).…”