Xin Li

and 10 more

Maize is a vital staple crop that has been significantly affected by climate change, necessitating an urgent increase in its resilience against the changing climate. This review aims to address the need for climatic resilience of maize by analyzing advanced methodologies and innovations employed for maize improvement. This comprehensive analysis will provide data for developing more resilient maize varieties, ensuring food security in case of any climatic challenge. Furthermore, this review discusses the association studies for QTL identification, candidate gene mining, and GWAS data to identify the genetic determinants of key traits. Moreover, the transformative potential of gene editing, particularly CRISPR, for identifying key regulators in maize development, and examining the utility of virus-induced gene silencing (VIGS) for functional genomics were also summarized. Breeding strategies based on the genetic diversity of maize wild relatives are significantly employed for their role in climate adaptation. This review also discusses innovations such as speed breeding and genomic selection for their ability to accelerate breeding cycles and marker-assisted selection (MAS) for its critical role in developing superior maize varieties. In addition, agronomic practices for climate mitigation and technological innovations to enhance resilience were also reviewed. High-throughput phenotyping and omics-based approaches, such as transcriptomics and metabolomics, are essential tools for developing climate-resilient maize. This review proposes to integrate the aforementioned advanced methodologies for revolutionizing maize breeding and ensuring sustainable food security amidst the growing challenges of climate change. This review highlights the necessity and potential of these innovations in breeding more resilient maize.