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  <titleInfo>
    <title>Selection of tomato genotypes for drought tolerance and agronomic potential through different selection indexes</title>
  </titleInfo>
  <name type="personal">
    <namePart>Oliveira, Camila S de</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Maciel, Gabriel M</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Fraga Júnior, Eusímio F</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
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  <name type="personal">
    <namePart>Peixoto, Joicy Vitória M</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Assunção, Vitor  B</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Marques, Douglas José</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
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  <genre authority="marc">abstract or summary</genre>
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  <abstract>


ABSTRACT:   The selection of genotypes with agronomic potential associated with drought tolerance is considered of high complexity. An alternative could be the use of selection indexes that can evaluate multiple characteristics simultaneously. This study aimed to select tomato genotypes with agronomic potential and drought tolerance by selection indexes. The experiment was conducted in a randomized block design with three replications. Ten treatments were evaluated: seven genotypes F2RC3 , donor genitor (Solanum pennellii), recurrent genitor (UFU-040), and cv. Santa Clara. The irrigation was suspended until the substrate reached a matric potential of ≤-25 kPa for water stress simulation during the tomato cycle at 45, 60, 80 and 100 days after sowing. The control treatment (donor genitor) and cv. Santa Clara, were resistant and susceptible to water deficit, respectively. The UFU-102-RC3#91335 genotype presented agronomic potential and satisfactory tolerance level to water deficit and presented 58.2% higher production than the recurrent genitor (UFU-040). The genotype-ideotype distance selection index was the most appropriate for the selection of tomato genotypes for agronomic potential allied to drought tolerance. 


Keywords:   Solanum lycopersicum, abiotic stress, selection gains, backcross, water deficit.</abstract>
  <abstract>


RESUMO:   A seleção visando obtenção de genótipos com potencial agronômico aliado a tolerância a déficit hídrico é considerada de alta complexidade. Uma alternativa poderia ser o uso de índices de seleção pois é capaz de avaliar múltiplas características. Objetivou-se com este trabalho selecionar genótipos de tomateiro com potencial agronômico e tolerância a déficit hídrico por diferentes índices de seleção. O experimento foi conduzido em delineamento de blocos ao acaso com três repetições. Foram avaliados dez tratamentos sendo sete genótipos F2RC3, genitor doador (Solanum pennellii), recorrente (UFU-040) e cv. Santa Clara. Para a simulação de vulnerabilidade hídrica durante o ciclo foram realizados quatro sucessivos déficit hídricos (45, 60, 80 e 100 DAS) até que as parcelas atingissem potencial matricial ≤-25 kPa. As testemunhas, genitor doador (S. pennellii) e cv. Santa Clara foram de fato resistente e suscetível ao déficit hídrico, respectivamente. O genótipo UFU-102-RC3#91335 apresentou potencial agronômico e níveis satisfatórios de tolerância ao déficit hídrico sendo 58,2% superior em produção em relação ao genitor recorrente UFU-040. O índice de seleção de distância genótipo-ideótipo é o mais apropriado para seleção de genótipos de tomateiro visando potencial agronômico aliado a tolerância à seca.



Palavras-chave:   Solanum lycopersicum, estresse abiótico, ganhos de seleção, retrocruzamento, déficit hídrico.</abstract>
  <note>
Publicação online; 32 ref.; 4 tables; 2 illus.; Summaries (En, Pt)</note>
  <subject>
    <topic>TOMATE</topic>
  </subject>
  <subject>
    <topic>SELEÇÃO</topic>
  </subject>
  <subject>
    <topic>GENÓTIPO</topic>
  </subject>
  <subject>
    <topic>DEFICIÊNCIA HÍDRICA</topic>
  </subject>
  <subject>
    <topic>MELHORAMENTO VEGETAL</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Horticultura Brasileira (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Brasília-DF Sociedade de Olericultura do Brasil 1983</publisher>
    </originInfo>
    <identifier>2025-5631</identifier>
    <identifier type="issn">0102-0536</identifier>
    <identifier type="local">BR2025001889</identifier>
    <part>
      <text>v. 39(1) p. 102-111; (2021)</text>
    </part>
  </relatedItem>
  <identifier type="uri">https://www.scielo.br/j/hb/a/tgR5PZyQcM3BZBDh7BnJM3H/?format=pdf&amp;lang=en</identifier>
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    <url>https://www.scielo.br/j/hb/a/tgR5PZyQcM3BZBDh7BnJM3H/?format=pdf&amp;lang=en</url>
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    <recordCreationDate encoding="marc">250908</recordCreationDate>
    <recordChangeDate encoding="iso8601">20250908134728.0</recordChangeDate>
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