Universidade Federal de Viçosa - UFV, Departamento de Agronomia, Viçosa, MG, Brasil.
Braz J Biol. 2022 Jul 15;82:e262364. doi: 10.1590/1519-6984.262364. eCollection 2022.
Basil (Ocimum basilicum) is a medicinal, ornamental and aromatic plant, however, its size can be an obstacle to its commercialization as a potted ornamental plant. Paclobutrazol (PBZ) is a substance that can retard plant growth by inhibiting the synthesis of gibberellins. The objective of this work was to evaluate the effect of paclobutrazol on growth regulation and gas exchange of basil (var. Cinnamon). The experiment was carried out in a completely randomized design with five treatments (PBZ doses: 0, 2.5, 5, 7.5 and 10 mg L-1), with eight replicates. Growth (plant height, number of leaves, stem diameter, leaf dry mass, stem dry mass, inflorescence dry mass, and total), growth rates (leaf mass ratio, stem mass ratio, inflorescence mass ratio, and robustness quotient), chlorophyll indices, gas exchange (gs, A, E, Ci, WUE, iWUE and iCE) were evaluated. Paclobutrazol reduced the growth of basil plants and increased the chlorophyll indices, A, gs, and WUE. Paclobutrazol can be used to regulate plant growth of basil plants var. Cinnamon, without altering its physiological and ornamental characteristics.
罗勒（Ocimum basilicum）是一种药用、观赏和芳香植物，但它的体积可能成为其作为盆栽观赏植物商业化的障碍。多效唑（PBZ）是一种可以通过抑制赤霉素的合成来延缓植物生长的物质。本工作的目的是评估多效唑对罗勒（肉桂变种）生长调节和气体交换的影响。试验采用完全随机设计，设 5 个处理（多效唑剂量：0、2.5、5、7.5 和 10 mg L-1），8 次重复。对生长（株高、叶片数、茎直径、叶干质量、茎干质量、花序干质量和总质量）、生长速率（叶质量比、茎质量比、花序质量比和稳健性系数）、叶绿素指数、气体交换（gs、A、E、Ci、WUE、iWUE 和 iCE）进行了评估。多效唑降低了罗勒植株的生长速度，增加了叶绿素指数、A、gs 和 WUE。多效唑可用于调节肉桂罗勒植物的生长，而不改变其生理和观赏特性。
