Melanoxylon brauna is a species native to the Brazilian Atlantic Forest. It has significant ecological and economic value and is at risk of extinction. The usual method for Melanoxylon brauna propagation is by seeds. However, pest attacks and the short viability of its seeds represent a problem for continuous seedlings production. The aim of this study was to evaluate the potential of vegetative propagation of M. brauna through mini-cuttings technique from juvenile shoots obtained from seedlings, evaluating plant growth regulator dosages and types of mini-cuttings. Five concentrations of indole-3-butyric acid (0, 2,000, 4,000, 6,000, and 8000 mg kg⁻¹) and two types of mini-cuttings (apical stem and leaf) were evaluated, with four replications. After 90 days in greenhouse, percentage of survival and rooting, number of roots, length of the largest root, surface area, volume, roots diameter, dry weight of the root and aerial part, and total dry weight were evaluated. Results indicated that the mini-stumps of the mini-clonal hedge of M. brauna showed low productivity, always with the dominance of one sprout. M. brauna has low ability for vegetative propagation through mini-cuttings technique in a greenhouse with rooted mini-cuttings values of up to 35.0%. Under controlled conditions of humidity and temperature, rooting of apical stem and leaf M. brauna mini-cuttings is possible. However, leaf cuttings did not show shoot emission and aerial part growth during the 90-day period. Application of IBA influences rooting responses and quality of the adventitious root of M. brauna mini-cuttings, with higher means in the concentrations 4,000, 6,000, and 8000 mg kg⁻¹ applied to the apical mini-cuttings.

Melanoxylon brauna是巴西大西洋森林的原生物种。它具有重大的生态和经济价值，并且有灭绝的危险。Melanoxylon brauna繁殖的通常方法是通过种子。但是，害虫侵袭及其种子的短生存能力代表了连续幼苗生产的问题。这项研究的目的是通过从幼苗获得的幼枝上的小插条技术评估brauna的营养繁殖潜力，评估植物生长调节剂的用量和小插条的类型。五浓度的吲哚-3-丁酸（0、2,000、4,000、6,000和8000 mg kg ^-1）和两种类型的小型插条（顶端茎和叶）进行了评估，并进行了四次重复。在温室中放置90天后，评估了存活率和生根率，根数，最大根的长度，表面积，体积，根直径，根和地上部的干重以及总干重。结果表明，bra。M. brauna的迷你克隆树篱的迷你树桩显示出较低的生产力，始终以一个新芽为主。布劳纳分枝杆菌通过小切口技术在温室中的无性繁殖能力低，其根系小切口值高达35.0％。在湿度和温度受控的条件下，顶端茎和叶的生根迷你切割是可能的。但是，在90天的时间内，插条未显示出芽生和空中部分的生长。IBA的使用会影响brauna迷你插条的生根响应和不定根的质量，在根尖迷你插条中的浓度分别为4,000、6,000和8000 mg kg ^-1较高。