FIGURE 2.

Haplotype‐based breeding scheme for designing drought‐adaptive crops. (A) An example of haplotypic variation (H1‐H4) underlying a particular gene (gene 3) on a chromosome. A combination of various haplotypes for different genes (gene 1, gene 2, gene 3, gene n …) has been shown in multiple genotypes (genotype 1, genotype 2, genotype 3, and genotype n). Superior haplotypes are selected for various genes based on the preferred combinations of phenotypes, expressed by the respective haplotype. (B) Difference in the performance of four traits associated with drought adaptation that are influenced by genetic variation in gene 1 (leaf area), gene 2 (root depth), gene 3 (time to flower) and gene n (yield), is illustrated using violin plots. Analysis of variance results indicate that H3 is the superior haplotype for gene 1, H1 for gene 2, H2 for gene 3, and H3 for gene n. (C) Introgression of superior haplotypes for multiple adaptive traits in an elite variety using haplotype‐based breeding approach will enable development of an introgression line possessing improved drought adaptation