Small millets: A multifunctional crop for achieving sustainable food security under climate change
DOI:
https://doi.org/10.14719/pst.4113Keywords:
Millets; , Climate resilience; , Nutritional benefits; , C4 photosynthesis; , Biofortification; , Advanced breeding techniquesAbstract
Millets, a varied collection of small-seeded crops from the Poaceae family, are re-emerging as a viable alternative for sustainable food and nutritional security in the context of climate change. Historically a staple in India, millet consumption declined during the Green Revolution due to emphasis on rice and wheat. However, their nutritional enrichment and climate resilience are rekindling interest. Over ten millet species, including sorghum, pearl, and finger millet, are cultivated globally and thrive in marginal lands with minimal water and low nutrients. Their C4 photosynthetic pathway enhances water-use efficiency, making them suitable for hot, dry climates. Despite their benefits, millets face challenges, such as consumer preferences for rice and wheat and vulnerabilities to extreme weather events. Nevertheless, they offer significant nutritional advantages, including high levels of dietary fiber, essential amino acids, vitamins, and minerals. India is a leading millet producer, cultivating various types and experiencing a recent production surge. Investigations into the resilience of millets underscore their capacity to endure environmental stresses. Strategies for improving millet crops include conventional breeding, mutation breeding, and advanced techniques like CRISPR-Cas9. Bio-fortification efforts aim to address micronutrient deficiencies, with promising results in finger millet varieties. Advancements in genetic engineering and genome editing tools are revolutionizing millet improvement. The pangenome concept, which explores genetic diversity within species, offers a framework for developing enhanced cultivars. Integrating wild millet varieties into breeding programs can further unlock their potential. Comprehensive policy initiatives supporting millet cultivation, research, and public awareness are crucial for promoting these nutrient-rich grains, enhancing food security, and fostering sustainable agriculture.
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