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. 2022 Jul 28;13:959203. doi: 10.3389/fpls.2022.959203

FIGURE 3.

FIGURE 3

Hierarchical clustering and heatmap illustrating the associations among 45 maize inbred lines and 18 different traits in respect to drought tolerance index (DTI) condition. The different colors and intensities were adjusted based on cultivars–traits relationships. The darker blue-sky color indicates lower values (drought-sensitive), while the darker red indicates higher values (drought-tolerant). DT, days to 50% tasseling; DS, days to 50% silking; PH, plant height (cm); EH, ear height (cm); NEP, no. of ears/plant; EL, ear length (cm); ED, ear diameter (cm); CD, cob diameter (cm); NRE, no. of row/ear; HKW, 100-kernel weight (g); NKR, number of kernel/row; GY, grain yield (ardbe/fed); LA, leaf area (cm2); RWC, relative water content (%); PC, proline content (mg g– 1); CC, chlorophyll content (SPAD); TR, transpiration rate (mmol m– 2 s– 1); SC, stomatal conductance (mol m– 2 s– 1).