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<p>Passion fruit is important due to its high yield and economic relevance, but its production is limited by the fruit woodiness disease, caused by the CABMV virus. The objective of this study was to evaluate the production and quality of BC<sub>3</sub> passion fruit lines using REML/BLUP methodology. The experiment was conducted in randomized blocks, with six replicates and five full-sib families, in addition to the <i>P. setacea</i> and UENF Rio Dourado (<i>P. edulis</i>) parents. The following traits were evaluated: fruit production per plant, number of fruits, average fruit weight, fruit weight (FW), pulp weight (PW), pulp yield (PY), longitudinal diameter, transverse diameter, peel thickness, and soluble solids content. Analysis of deviance, genetic parameter estimation, and genotype selection revealed significant differences between genotypes. Heritability ranged from 0.17 to 0.81, with FW and PY showing high selection potential. Progeny analysis indicated greater efficiency in selection by families, with heritability of 0.99 for FW and PW. Selection accuracy was high (&gt; 0.94), ensuring reliable results. Genotypes 489 and 341 (BC<sub>3</sub> family 293) showed gains of 68.4% and 68.3% in production, respectively. Selection of genotypes 083 and 293 (BC<sub>3</sub> family 355) resulted in improved fruit quality. The results showed significant genetic gains, highlighting the potential of mixed models and interspecific crosses in passion fruit breeding.</p>

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Genotype selection from a segregating BC3 population of Passiflora spp. for fruit production and quality using REML/BLUP methodology

  • 期刊论文

  • 发表日期：

    2025年10月7日

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  • Luis Carlos Loose Coelho,
  • Alexandre Pio Viana,
  • Natan Ramos Cavalcante,
  • Renato Santa Catarina,
  • Flávia Alves da Silva,
  • Julie Anne Vieira Salgado de Oliveira

摘要

Passion fruit is important due to its high yield and economic relevance, but its production is limited by the fruit woodiness disease, caused by the CABMV virus. The objective of this study was to evaluate the production and quality of BC3 passion fruit lines using REML/BLUP methodology. The experiment was conducted in randomized blocks, with six replicates and five full-sib families, in addition to the P. setacea and UENF Rio Dourado (P. edulis) parents. The following traits were evaluated: fruit production per plant, number of fruits, average fruit weight, fruit weight (FW), pulp weight (PW), pulp yield (PY), longitudinal diameter, transverse diameter, peel thickness, and soluble solids content. Analysis of deviance, genetic parameter estimation, and genotype selection revealed significant differences between genotypes. Heritability ranged from 0.17 to 0.81, with FW and PY showing high selection potential. Progeny analysis indicated greater efficiency in selection by families, with heritability of 0.99 for FW and PW. Selection accuracy was high (> 0.94), ensuring reliable results. Genotypes 489 and 341 (BC3 family 293) showed gains of 68.4% and 68.3% in production, respectively. Selection of genotypes 083 and 293 (BC3 family 355) resulted in improved fruit quality. The results showed significant genetic gains, highlighting the potential of mixed models and interspecific crosses in passion fruit breeding.