Drought is a common stress in crop growth that limits plant growth, development and yield. Therefore, we explored the feasibility of bio-saving water for tomato production by grafting with drought-tolerant seedlings. In this experiment, we carried out grafting on different drought-tolerant tomato seedlings to study the effects of grafting on root growth and plant nutrient uptake under drought stress. We measured the effects of grafting on root growth, nutrient uptake, carbohydrate content and organic acids in tomato leaves and roots under drought stress. The growth and vigor of roots as well as the concentration of N, P, K, Ca and Mg of the plant were significantly inhibited by drought. The nutrient content was significantly decreased in leaves, and the content of carbohydrates and organic acids was increased in both leaves and roots under drought conditions. Treatment with drought-tolerant tomato seedlings significantly enhanced root growth and increased the element content under water deficit conditions compared to those grafted with drought-susceptible seedlings. In the plants grafted with drought-tolerant seedlings, the contents of carbohydrates and organic acids increased. Our results indicated that the grafted tomato seedlings showed beneficial root growth because drought-tolerant seedlings increased in inorganic and organic osmotic adjustment substances that helped the plants absorb more water and promoted plant growth.

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嫁接提高番茄耐旱性的效果

干旱是作物生长中的一种常见压力，它限制了植物的生长、发育和产量。因此，我们探讨了采用耐旱幼苗嫁接进行番茄生产生物节水的可行性。在本试验中，我们对不同的耐旱番茄幼苗进行嫁接，研究嫁接对干旱胁迫下根系生长和植物养分吸收的影响。我们测量了嫁接对干旱胁迫下番茄叶和根的根生长、养分吸收、碳水化合物含量和有机酸的影响。干旱显着抑制了植物根系的生长和活力以及N、P、K、Ca、Mg的浓度。叶片养分含量显着降低，干旱条件下叶片和根中碳水化合物和有机酸的含量均增加。与用耐旱幼苗嫁接的番茄幼苗相比，耐旱番茄幼苗处理显着促进了根系生长并增加了缺水条件下的元素含量。在嫁接耐旱苗的植株中，碳水化合物和有机酸的含量增加。我们的结果表明，嫁接番茄幼苗显示出有益的根系生长，因为耐旱幼苗增加了无机和有机渗透调节物质，有助于植物吸收更多水分并促进植物生长。与用耐旱幼苗嫁接的番茄幼苗相比，耐旱番茄幼苗处理显着促进了根系生长并增加了缺水条件下的元素含量。在嫁接耐旱苗的植株中，碳水化合物和有机酸的含量增加。我们的结果表明，嫁接番茄幼苗显示出有益的根系生长，因为耐旱幼苗增加了无机和有机渗透调节物质，有助于植物吸收更多水分并促进植物生长。与用耐旱幼苗嫁接的番茄幼苗相比，耐旱番茄幼苗处理显着促进了根系生长并增加了缺水条件下的元素含量。在嫁接耐旱苗的植株中，碳水化合物和有机酸的含量增加。我们的结果表明，嫁接番茄幼苗显示出有益的根系生长，因为耐旱幼苗增加了无机和有机渗透调节物质，有助于植物吸收更多水分并促进植物生长。