The objective of this study was to evaluate the response of transpiration and leaf growth of gladiolus cultivars to a drying soil represented by the FTSW. Three experiments (E1, E2 and E3) were individually carried out in 20 pots, with four gladiolus cultivars. Plants did not experienced water deficit until they had less than seven leaves in E1, four leaves in E2 and, four and seven leaves in E3. At these stages, water deficit was imposed in 10 pots of each experiment, while the other 10 pots remained without water deficit. The FTSW, transpiration and leaf growth were measured daily, during the period of water deficit. Results indicated that the threshold FTSW for transpiration is higher when water deficit occur during the reproductive phase. We concluded that the FTSW threshold for NTR in gladiolus varies depending on the developmental stage at which the water deficit is applied, being higher when it occurs during the reproductive phase and lower when it occurs during the vegetative phase. Water deficit reduces leaf appearance rate in gladiolus, delaying the harvesting point of the flower stems.

这项研究的目的是评估唐diol蒲品种的蒸腾作用和叶片生长对以FTSW为代表的干燥土壤的响应。在20个盆中分别对四个唐diol蒲品种进行了三个实验（E1，E2和E3）。直到E1的叶子少于7片，E2的叶子只有4片，E3的叶子只有4片和7片时，植物才经历缺水。在这些阶段，每个实验在10个盆中施加水分亏缺，而其他10个盆保持无水分亏缺。在缺水期间，每天测量FTSW，蒸腾作用和叶片生长。结果表明，当生殖阶段出现缺水时，蒸腾的阈值FTSW更高。我们得出的结论是，唐蒲中NTR的FTSW阈值取决于施加水分亏缺的发育阶段，在生殖阶段发生时较高，而在营养阶段发生时较低。水分不足会降低唐蒲的叶片出现率，从而延缓花茎的收获点。