MOLECULAR RESPONSES AND GENOMIC CROP IMPROVEMENT POTENTIAL
After sensing decreasing water potential in surroundings, roots triggers various signaling pathways of transcription and transportation in aboveground and underground parts for activating defense responses (Opitz et al., 2016; Sengupta et al., 2011; Y. Yang et al., 2020). Modification in RSA to drought is dependent on intense signaling pathways and gene expressions (Janiak et al., 2016). In the following subsections we have discussed genes involved in controlling physiological responses in plants and various QTLs involved in drought responses.