The population acceleration and better lifestyle submit new challenges for wheat researchers to breed wheat (Triticum sativum) cultivars with upgraded yield, quality, and resistance against abiotic stresses such as drought, so exploiting all available natural relatives of cultivated wheat and introducing even sensitive ones may be a useful approach to save time and efforts. Normally, the seedling stage is highly drought vulnerable, but for sensitive cultivars, the situation is more frustrating. We examine the potentiality of two regulating hormones in the upregulation of two wheat cultivars varying in their drought susceptibility at the seedling stage comparatively evaluated by morpho-physiological traits as indicators of drought tolerance. All the studied traits revealed cultivar-dependent variation in response to water deficit where cv. Sids 1 was tolerant and cv. Beni-suef 5 was sensitive. Shoot/root ratio, total water content, total dry weight, chlorophyll stability, total osmotic potential, osmoregulatory components, viz., soluble carbohydrates, soluble proteins and proline, membrane damage trait in terms of LOX, antioxidant defense system enzymatically in terms of APX, CAT, POD, SOD, and total antioxidant as drought tolerance indicators were the troubling shot due to water shortage in both cultivars. The damaging impacts of water deficit on these traits were conceived for sensitive cultivar compared with the tolerant one. Exogenous application of jasmonic acid (JA) or kinetin (K) efficiently conferred drought tolerance to sensitive cultivar to withstand harsh conditions in earlier stages and to perform comparably with tolerant ones. Applied hormones prompted unequivocal inversion from a state of downregulation to upregulation regarding all drought tolerance traits via reallocation of photoassimilates to vegetative sinks, thus promoting growth, increasing the accumulation of some osmoregulation compounds and thus increased tissue vigor and regulated the activity of antioxidant enzymes as well as morphological modulation attained by the restoration of shoot/root ratio. The results would promisingly be supportive of research programs seeking to develop anti-drought stress practices for sensitive wheat cultivars.

人口的增长和更好的生活方式给小麦研究者育种小麦带来了新挑战（Triticum sativum）具有提高的产量，品质和对非生物胁迫（例如干旱）的抵抗力的品种，因此，利用耕作小麦的所有可用自然亲缘种，甚至引进敏感品种，可能是节省时间和精力的有用方法。通常，苗期极易干旱，但对于敏感品种而言，情况更加令人沮丧。通过形态生理性状作为耐旱性指标进行比较，我们研究了两种调节激素在两个小麦品种在幼苗期的干旱敏感性上调中的潜力。所有研究的性状都显示了对缺水的响应，品种间变异取决于cv。Sids 1具有宽容和简历。贝尼-苏夫5很敏感。苗/根比，总水分，总干重，叶绿素稳定性，总渗透势，渗透调节成分，即可溶性碳水化合物，可溶性蛋白和脯氨酸，就LOX而言的膜损伤性状，就APX，CAT，POD，SOD和总抗氧化剂而言的酶促抗氧化防御系统是耐旱指标由于两个品种都缺水，令人不安。与耐性品种相比，水分敏感性对这些性状的破坏性影响被认为是敏感品种。茉莉酸（JA）或激动素（K）的外源施用有效地赋予敏感品种以干旱耐受性，以在较早的阶段经受严酷的条件，并与耐性品种表现相当。施用的激素通过将光同化物重新分配到营养池上，促使所有耐旱性状从下调状态到上调的明确转化，从而促进生长，增加某些渗透调节化合物的积累，从而增加组织活力并调节抗氧化酶的活性。通过恢复茎/根比率获得的形态调节。该结果有望为寻求针对敏感小麦品种开发抗干旱胁迫实践的研究计划提供支持。