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. 2021 Sep 16;12:681367. doi: 10.3389/fpls.2021.681367

Figure 3.

Figure 3

Portrayed some major events in the history of plant breeding to increase the crop production. Like primitive domestication leads to the discovery of Mendel's law to study the plant genetics and green revolution that select the specific agronomic traits to increase the crop yield. This intensive domestication led to the reduction in genetic diversity and crops become more susceptible to abiotic and biotic stresses due to the elimination of resistant genes. The crop wild relatives (CWRs) are vital to decipher the stress-responsive genes and can be exploited for transcriptional profiling of several unique salt tolerance genes through next-generation sequencing (NGS) technologies. The landraces cultivated and CWRs are used to construct the high quality pangenomes for crop improvement. The pangenomes consist of core and dispensable genomes representing all the genes present within a species. It helps to increase the genetic diversity of a species and recapture the unique genes that have been lost during domestication. The detection of stress-tolerance genes can be applied to produce salt-tolerance crops through de novo domestication using CRISPR/Cas9 system. On the other hand, halophytes provide an alternate strategy to cope with the salt stress and can be exploited in breeding programs to develop new crops with increased salt tolerance or improve the current cultivated crops.