PERIODS OF COLLECTION AND SIZE OF MINI-CUTTINGS IN YERBA - MATE ADVENTITIOUS ROOTING

Q4 Environmental Science

Floresta Pub Date : 2023-09-29 DOI:10.5380/rf.v53i4.84348

Maria Angelica Di Carvalho, Dagma Kratz, Angela Da Luz, Rosimeri De Oliveira Fragoso, Carlos André Stuepp

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引用次数: 0

Abstract

To improve the production of yerba mate seedlings by increasing rooting rates, clonal propagation is used, especially the mini-cutting technique, which aims to increase genetic gains and production efficiency. Thus, the objective was to evaluate the influence of different sizes of mini-cuttings and successive collections on the rooting and root vigor of Ilex paraguariensis. Four successive collections were carried out and mini-cuttings measuring 4, 6, 8 and 10 cm (± 0.2) in length were made, which were staked in 110 cm 3 tubes and kept in a climate-controlled greenhouse for 45 days. Rooting percentage, number of mini-cutting roots -1 , average length of the three largest mini-cutting roots -1, callus, mortality, survival, and maintenance of original leaves were considered. Rooting was influenced by the size of the mini-cuttings, with mini-cuttings of 8 cm and 10 cm showing greater vigor. The good adaptation of the mini-stumps tends to favor the rooting of the mini-cuttings throughout the collections, showing the potential of the mini-cutting technique for the vegetative influence of Ilex paraguariensis.

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马黛茶不定根小插枝的采收期和大小

为了提高马黛茶幼苗的生根率，采用无性系繁殖技术，特别是小扦插技术，以提高遗传增益和生产效率。因此，本研究旨在评价不同大小的小插穗和连续采收对巴拉圭冬青生根和根系活力的影响。连续采集了4次，分别制作了长度为4、6、8和10厘米(±0.2)的迷你插花，将其固定在110厘米3的试管中，在气候控制的温室中保存45天。考虑生根率、小切根数-1、最大3根小切根平均长度-1、愈伤组织、死亡率、存活率和原叶维持率。生根受小插条大小的影响，8 cm和10 cm的小插条表现出较强的生根活力。小树桩的良好适应性有利于小扦插的生根，显示了小扦插技术对巴拉圭冬青营养影响的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Floresta Environmental Science-Nature and Landscape Conservation

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Revista Floresta admits articles of scientific contribution in Forest Science, in the areas of Nature Conservation, Economy and Forest Policy, Forest Management, Silviculture and Wood Technology. The main task is to promote and divulgate the development of Forest Science in Brazil and in the world. Articles published in Revista Floresta are under total responsibility of the authors, who are aware that they are original studies. It remains implicit that articles were not submitted for publication to any other divulgation media. It remains explicit the agreement of authors to norms of the journal and, along the development of their work, the observance of ethic aspects and respect of the current copyright legislation.