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  <titleInfo>
    <title>Shoot segment and substrate composition in rooting of juvenile ipe-roxo mini-cuttings</title>
  </titleInfo>
  <name type="personal">
    <namePart>Pimentel, Nathalia</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Bisognin, Dilson Antônio</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Kielse, Paula</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Lencina, Kelen Haygert</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Mello, Uilian Stefanello</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
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  <genre authority="marc">periodical</genre>
  <genre authority="marc">abstract or summary</genre>
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  <abstract>

ABSTRACT - This study aimed to evaluate the rooting capability of apical and nodal mini-cuttings of ipe-roxo (Handroanthus heptaphyllus) in different substrates. Shoots produced from ministumps were fractioned into mini-cuttings 2-cm long apical or nodal mini-cuttings and treated with 1000 mg L-1 of indolebutyric acid (IBA). Four substrate combinations were evaluated: commercial substrate composed of pine bark and vermiculite in proportions of 1:1, 2:1 and 1:2 (v /v) and commercial substrate, vermiculite and sand in the proportion of 1:1:1 (v/v). The factorial experiment utilized a completely random design, with five replicates of four mini-cuttings. Rooting, shooting and survival percentage, number and length of shoots and roots were evaluated at 60 and 90 days of growth. Commercial substrate and vermiculite are a good combination for rooting mini-cuttings of ipe-roxo. Apical and nodal mini-cuttings exhibit similar rooting behavior and both are feasible for production of ipe- roxo plantlets.

Key words: Handroanthus heptaphyllus, tree species, vegetative propagation and mini - clonal hedge.</abstract>
  <abstract>

RESUMO - O objetivo deste estudo foi avaliar o enraizamento de miniestacas apicais e nodais de ipê-roxo (Handroanthus heptaphyllus) em diferentes substratos. Brotos coletados de minicepas foram seccionados em miniestacas de 2cm de comprimento, classificadas em apical ou nodal e tratadas com 1000mg L-1 de ácido indolbutírico (AIB). Foram também testadas as composições de substrato comercial à base de casca de pinus e vermiculita nas proporções de 1:1; 2:1 e 1:2 (v/v) e de substrato comercial, vermiculita e areia grossa (1:1:1 v/v). O experimento foi um fatorial no delineamento inteiramente casualizado, com cinco repetições de quatro miniestacas. A porcentagem de enraizamento, de brotação e de sobrevivência, o número e comprimento de brotos e raízes foram avaliados aos 60 e 90 dias. Miniestacas de ipêroxo cultivadas em substrato comercial e vermiculita apresentam maior capacidade de enraizamento. Miniestacas apicais e nodais apresentam similar comportamento de enraizamento, podendo ambas serem utilizadas para a produção de mudas de ipê-roxo.

Palavras-chave: Handroanthus heptaphyllus, espécie arbórea, propagação vegetativa e minijardim clonal.</abstract>
  <note>Publicação on-line; 22 ref.; 3 tables; Sumaries (En, Pt)</note>
  <subject>
    <topic>IPÊ ROXO</topic>
  </subject>
  <subject>
    <topic>SUBSTRATO DE CULTURA</topic>
  </subject>
  <subject>
    <topic>ENRAIZAMENTO DE ESTACA</topic>
  </subject>
  <subject>
    <topic>PROPAGAÇÃO VEGETATIVA</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Ciência Rural (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Santa Maria-RS Universidade Federal de Santa Maria - Centro de Ciências Rurais 1991</publisher>
    </originInfo>
    <identifier>2024-1179</identifier>
    <identifier type="issn">0103-8478</identifier>
    <identifier type="local">BR2024001331</identifier>
    <part>
      <text>v. 46(6) p. 996-1002; (2016)</text>
    </part>
  </relatedItem>
  <identifier type="uri">https://www.scielo.br/j/cr/a/QbqCQzXKyNDJsBQs9b4NQ7y/?format=pdf&amp;lang=en</identifier>
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    <url>https://www.scielo.br/j/cr/a/QbqCQzXKyNDJsBQs9b4NQ7y/?format=pdf&amp;lang=en</url>
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    <recordCreationDate encoding="marc">240813</recordCreationDate>
    <recordChangeDate encoding="iso8601">20240813155816.0</recordChangeDate>
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      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
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