VEGETATIVE RESCUE AND PROPAGATION OF NATIVE Ilex paraguariensis POPULATIONS IN SANTA CATARINA STATE, BRAZIL

IF 0.6 4区 农林科学 Q4 FORESTRY Revista Arvore Pub Date : 2023-07-07 DOI:10.1590/1806-908820230000010
Bruno Nascimento, Alexandra Cristina Schatz Sá, Bruno Jan Schramm Corrêa, Thalia Schilisting, Mariane de Oliveira Pereira, M. Navroski, A. Mantovani
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Abstract

ABSTRACT When producing Ilex paraguariensis seedlings through vegetative propagation, selecting the correct populations and genotypes, and obtaining juvenile material, may be fundamental for its success. Therefore, this search aimed to test its vegetative propagation through cutting and rescue using detached branches of different populations in Santa Catarina state, Brazil. Thus, two experiments were installed in September 2019 in order to test: I) the cuttings of four populations belonging to the municipalities of Catanduvas (CT), Painel (PL), Três Barras (TB), and Urupema (UR), using ten randomly chosen genotypes from each, and; II) the epicormic sprouting of detached branches from these same populations. Both experiments were carried out in Lages, Santa Catarina. In February 2020, the cutting was evaluated according to the percentages of survival, callus, rooting, new sprouts, and original leaves permanence. The branches were evaluated every 30 days after storing, observing the percentages of sprouting branches, number of sprouts, and length of sprouts in centimeters. As for cutting, there was a low survival percentage in all populations (<15%), but some genotypes presented greater vigor, such as TB1 (46%), TB7, and TB3 (both 28%). Most live cuttings presented calluses (>70%), characteristic of material of high maturity. Rooting was low for populations (<1.5%) and genotypes (<10%). Branches presented sprouts up to 60 days, with TB presenting the highest total number of sprouts (approximately 300) and the greatest average length (2.8 cm). In general, survival and rooting of cuttings were affected by both populations and genotypes, highlighting TB. A similar response was observed for the branches’ sprouting. New studies with more populations, further analyses of the branches’ characteristics, and better storage conditions are recommended.
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巴西圣卡塔琳娜州巴拉圭冬青原生种群的营养抢救与繁殖
摘要巴拉圭冬青无性繁殖育苗时,选择正确的群体和基因型以及获得幼苗材料可能是其成功的基础。因此,本次研究旨在通过对巴西圣卡塔琳娜州不同种群的分离枝的切割和抢救来测试其无性繁殖。因此,2019年9月进行了两项实验,以测试:1)从卡坦杜瓦斯(CT)、帕内尔(PL)、Três巴拉斯(TB)和乌鲁佩马(UR)四个城市的四个种群中抽取10个随机选择的基因型;II)来自这些相同种群的分离枝的外生芽。这两项实验都是在圣卡塔琳娜州的拉格斯进行的。2020年2月,根据成活率、愈伤组织、生根率、新芽率和原叶持久性对扦插进行评价。贮藏后每隔30天对枝条进行评价,观察枝条出芽百分率、芽数、芽长(厘米)。在扦插方面,各种群成活率均较低(70%),主要表现为材料成熟度高。群体和基因型的生根率均较低(<1.5%)。枝条长芽60天,结核分枝长芽总数最多(约300个),平均长度最大(2.8厘米)。一般来说,插穗的存活和生根受到种群和基因型的影响,特别是结核病。在树枝发芽的过程中也观察到类似的反应。建议进行更多种群的新研究,进一步分析分支特征,以及更好的储存条件。
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来源期刊
Revista Arvore
Revista Arvore FORESTRY-
CiteScore
1.00
自引率
0.00%
发文量
32
审稿时长
4-8 weeks
期刊介绍: A Revista Árvore é um veículo de comunicação científica da Sociedade de Investigações Florestais – SIF. O jornal é de acesso gratuito, revisado por pares, que publica bimestralmente trabalhos científicos originais no campo da Ciência Florestal. As áreas temáticas para publicação são: Ambiência e Conservação da Natureza, Manejo Florestal, Silvicultura e Tecnologia da Madeira e Utilização de Produtos Florestais. A política editorial visa manter alta conduta ética em relação à publicação e aos seus funcionários, rigor na qualidade dos artigos científicos, seleção de revisores qualificados, respeito profissional aos autores e processo de tomada de decisão imparcial. A Revista Árvore publica artigos apenas em inglês. Artigos de revisão podem ser publicados se houver uma discussão relevante resumindo o estado da arte sobre o assunto. A revisão estrita da literatura não é aceita.
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