amelioration of salt adversities imposed on four cultivars of wheat (triticum aestivum, l.) stomata dimensions by na+: k+ antagonisms and role of tahkt2;2 genes on salt tolerance

Iba99, rasheed, boohuth, and abugrieab wheat cultivars were watered with water of 2.4 ds.m-1 ec, water + 400 ppm of k+, saline water of 5 ds.m-1 ec, and saline water + 400 ppm of k+ to investigate k+: na+ ion antagonisms influences on stomata dimensions and tahkt2;2 genes role on salt tolerance. enrichment of normal water by potassium significantly increased the upper surface of leaf stomata length (55.63µm) compared to that of normal water (49.98 µm). k supplements to saline water, as k addition increased the width of the stomata aperture at the upper and lower surface of the leaf (9.82 µm, and 11.9, respectively). rasheed wheat cultivar gave the highest stomata aperture length (49.98 µm), stomata width (35.1 µm), and stomata length (56.82 µm) at the upper leaf surfaces. furthermore, at the lower leaf surface, the rasheed wheat cultivar also showed the highest stomata width (48.79 µm) and length (55.93 µm). aba99 came next, as it showed the highest stomata aperture (9.82 µm), and stomata width (23.73 µm) at the upper leaf surface, besides its highest stomata aperture width (11.31 µm). rasheed cultivar irrigated with normal water enriched with k showed superiority over others at both upper and lower leaf surfaces, in terms of length of stomata aperture (53.55 and 55.93 µm, respectively), stomata width (17.85 µm), stomata width (46.14 and 34.51 µm, respectively) and stomata length (60.69 and 63.07 µm, respectively. isolation, purification, cloning, and gel electrophoresis techniques confirmed the occurrence of 500 bp. tahkt2;2 genes in all 9 investigated treatments