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

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Copyright © 2022 Balbaa, Osman, Kandil, Javed, Lamlom, Ali, Kalaji, Wróbel, Telesiñski, Brysiewicz, Ghareeb, Abdelsalam and Abdelghany.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Correlation matrix of the 18 measured traits of 45 maize inbred lines evaluated under normal (A) and drought stress (B) conditions. The increasing color intensities illustrate a higher correlation coefficient. 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}).