Genetic Improvement of Barnyard Millet Through Advanced Biotechnological Methods

In recent years, barnyard millet (Echinochloa species) has emerged as a prominent minor millet crop in Asia, witnessing a substantial boost in both productivity and production. The two primary species within the Echinochloa genus, namely Echinochloa esculenta and Echinochloa frumentacea, are predominantly cultivated for human and animal consumption. Barnyard millet exhibits remarkable resilience against both biotic and abiotic stressors, showcasing its ability to yield even in the face of the most challenging conditions. In contrast to other major grains, barnyard millet stands out as an exceptional source of essential minerals such as iron and zinc, as well as dietary fiber and carbohydrates. Despite its manifold agronomic and nutritional advantages, barnyard millet has unfortunately remained somewhat overlooked. Regrettably, only limited efforts have been directed towards investigating the unique characteristics of this crop in recent times. A concerted endeavor is warranted to delve into barnyard millet’s germplasm resources, pinpoint donors with specific traits, establish mapping populations, and pinpoint key QTL (Quantitative Trait Loci) and genes associated with these traits. The imperative to undertake more rigorous research is evident. A deeper comprehension of the genetic framework and the intricate interplay between genotype and phenotype concerning micronutrients and agronomic traits can be facilitated by the recent unveiling of genome and transcriptome sequences of both wild and domesticated Echinochloa species. In the present review, we underscore the paramount importance of barnyard millet within the prevailing context. We delve into the current landscape of genetic and genomics research, while also identifying pivotal gaps that necessitate urgent attention. Bridging these lacunae is indispensable to transform barnyard millet into a viable and substantial crop capable of bolstering food and nutritional security on a broader scale.