ArticleBMC plant biology2026
Deciphering seasonal shifts, genotype × environment interactions effect on antioxidant activity, bioactive compounds and antinutritional factors in a diverse panel of leafy amaranth (Amaranthus spp.) germplasm: genetic and multivariate insights for breeding.
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLeafy amaranths (Amaranthus spp.) are promising traditional food and nutritional sources in Asia and Africa. They hold excellent value as underutilized, climate-resilient vegetable crops with versatile potential for food and nutritional security. Majority of the vegetable amaranth germplasm cultivated by Indian farmers consists of local landraces, and has not been subjected to systematic characterization. Hence, comprehensive characterization of amaranth germplasm for bioactive, antioxidant, and antinutritional factors in contrasting environments is vital for accelerating breeding of vegetable amaranth to underscore its potential in fulfilling United Nations sustainable development goals (SDGs) of Zero Hunger (SDG2) and Climate Action (SDG13).
resultsA diverse panel of 57 vegetable amaranth germplasm was investigated for antioxidant activity, bioactive compounds and antinutritional factors across winter (2024-2025) and summer (2025) seasons. Field experiment was laid out in randomized augmented block design with three commercial checks. Seasonal variations revealed the influence of G × E interactions on antioxidant activity, bioactive compounds and concentration of antinutrients. Clear temporal trends were recorded for antioxidant capacities (DPPH, CUPRAC, FRAP), bioactive traits and anti-nutrients (oxalates and nitrates). Genetic and multivariate analysis critically discriminated the germplasm and enabled the identification of potential parents for hybridization to exploit heterosis. Mahalanobis-D
conclusionOur study revealed substantial seasonal and genetic variations for antioxidant, bioactive and antinutritional traits in leafy amaranth germplasm, which is crucial for escalating crop breeding programmes. Results of genotype × environment interactions demonstrated the need of multi-environment, multi-year stability analysis for robust selection of multi-trait genotypes. The multivariate insights paved the way to breed amaranth cultivars with high nutritional quality and wider adaptability.
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