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LIMITATIONS ON VINATIC PRODUCTION ( Plathymenia reticulata BENTH) FOR MINICUTTING

机译：限制线虫生产（网状斑霉病）的局限性

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Vinatic ( Plathymenia reticulata Benth.) is one of the native species of Brazil, of economic and environmental interest. Its propagation has been carried out by seeds, however, the difficult access to the matrices, long intervals of fruiting and difficulty of storage, emphasize the importance of techniques that allow the clonal propagation of the species. Studies conducted with vinatic minitumps, coming from seedlings have shown that although the ministumps show good sprouting, the minicutting rooting is very low. The aim of this study was to evaluate the production of vinatic seedlings by minicutting using different management to induce rooting. Two experiments were carried out in a greenhouse and, in the first experiment, the minitumps were obtained from seedlings produced from progenies of eleven matrices, from which the successive collection of minicuttings was promoted, these being submitted to different concentrations of the IBA growth regulator (0, 2.000, 4.000, 6.000 and 8.000 mg.L -1 ). In the second experiment, light management (shading at buds base and total shading of minitump) and nutrient were used, with nitrogen application (4 g.L -1 urea) in the minitumps. The minicuttings produced were evaluated for rooting capacity and anatomy at the base of the minicuttings. In the first experiment there was a variation of survival and tip pruning tolerance among the progenies of the matrices analyzed, with emphasis on progeny of the DOM matrix, which presented the highest survival percentage in the first collection (88,2%), and a sensitivity of NELI, ZE1 and ZE2 progenies to the management in the clonal minigarden. Vinatic responded positively to the successive collection of sprouts, with an increase in the number of sprouts produced from the fourth month of collection (210 days). There was no significant effect on rooting of vinatic plants when submitted to increasing concentrations of IBA, nor on the type of light and nitrogen management used to stimulate the minicuttings rooting. No anatomical barriers were observed to the rooting of the minicuttings in the different managements evaluated.
机译：Vinatic（Platymenia reticulata Benth。）是巴西的本地物种之一，具有经济和环境价值。它的繁殖是通过种子进行的，但是，进入基质的困难，较长的结果间隔和存储的困难，强调了允许物种无性繁殖的技术的重要性。用来自种子的葡萄树的小根茎进行的研究表明，尽管ist有很好的发芽性，但小根的生根非常低。这项研究的目的是通过使用不同管理方法诱导生根的小型切割法来评估葡萄树苗的产量。在温室中进行了两个实验，在第一个实验中，微型种子是从11个基质的子代中产生的幼苗中获得的，这些种子被促进了连续的微型切块的收集，这些种子被分配给不同浓度的IBA生长调节剂（ 0，2.000，4.000，6.000和8.000 mg.L -1）。在第二个实验中，使用光管理（在芽根部遮光和微型盆的总遮光）和养分，并在微型茎中施氮（4 g.L -1尿素）。在小切口的底部评估所产生的小切口的生根能力和解剖结构。在第一个实验中，所分析的矩阵的子代之间存在生存期和修剪技巧的差异，其中重点是DOM矩阵的子代，该矩阵在首个集合中呈现最高的生存率（88,2％），并且NELI，ZE1和ZE2后代对克隆小型花园管理的敏感性。 Vinatic对连续的芽苗收集做出了积极反应，从收集的第四个月（210天）开始，芽苗的数量增加了。当IBA浓度增加时，对酿酒植物的生根没有显着影响，对用于刺激小插穗生根的光和氮管理类型也没有显着影响。在所评估的不同处理中，未观察到小切口生根的解剖学障碍。

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