Abstract
Genome-wide association study (GWAS) has become a widely accepted strategy for decoding genotype phenotype associations in many species thanks to advances in next-generation sequencing (NGS) technologies. Maize is an ideal crop for GWAS and significant progress has been made in the last decade. This review summarizes current GWAS efforts in maize functional genomics research and discusses future prospects in the omics era. The general goal of GWAS is to link genotypic variations to corresponding differences in phenotype using the most appropriate statistical model in a given population. The current review also presents perspectives for optimizing GWAS design and analysis. GWAS analysis of data from RNA, protein, and metabolite-based omics studies is discussed, along with new models and new population designs that will identify causes of phenotypic variation that have been hidden to date. The detailed that low temperature in maize seedlings altogether restricts germination and seedlings' development and destabilizes the cancer prevention agent safeguard component. Cold pressure adversely influences root morphology, photosystem II (PS II) effectiveness, chlorophyll substance, and leaf region. A short scene of low temperature stress (for example, under 10 °C for 7 days) during the V6–V9 maize development stages can fundamentally defer the anthesis commencement. Among the morphological reactions by focused on maize plants, low temperature stress causes strange tuft development in maize, along these lines influencing the fertilization and grain filling measures. Hence, problematic temperatures can cause a genuine yield decrease if happening at basic conceptive stages, as plants allocate over half of their photosynthesis to foster grains during this stage until physiological development. Low temperature stress fundamentally diminishes the plant stature and absolute yield biomass of maize. Leaf improvement turns out to be delayed in chilly focused on plants because of a drawn-out cell cycle and diminished pace of mitosis. The joint and continuous efforts of the whole community will enhance our understanding of maize quantitative traits and boost crop molecular breeding designs.
Highlights
In the current scenario of global climate change, the utmost desire to ensure food security is to maintain and increase agricultural production
Insufficient functional help, restricted HR, and absence of empowering strategies and legal and administrative systems are the key factors that hamper the prosperous development of sub-atomic reproducing in agricultural nations
A genuine exertion is important to address these critical difficulties among maize raisers across the world to guarantee feasible maize creation and food security
Summary
In the current scenario of global climate change, the utmost desire to ensure food security is to maintain and increase agricultural production. We sum up three conceivably free methodologies that, independently or mutually, may add to uncovering missing heritability in plants, in maize, including novel kinds of genotypes aggregates, measurable technique advancements, and new hereditary plans (Mao et al, 2015) It was recognized more than 1,000,000 PAVs by planning 26 million labels from 14 129 innate lines, and tracked down that this kind of variety displays advanced relationship with a wide scope of phenotypic characteristics (Michaels et al, 2018). By changing articulation level into double variety, (Neild et al, 2009), utilized high versus low articulation (comparative with the middle worth) as variety to uncover the commitment of differentially communicated qualities to their comparing cell and agronomic characteristic fluctuation (Panison et al, 2016) (Table 2)
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