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<p><i>Fusarium</i> wilt caused by the fungus <i>Fusarium oxysporum</i> f. sp. <i>passiflorae</i> (<i>FOP</i>) is considered the main soil disease that affects passion fruit. The use of resistant cultivars is the main strategy to deal with the disease. Therefore, screening was carried out on <i>Passiflora</i> L. germplasm to identify sources of resistance to <i>FOP</i> under controlled conditions. Forty accessions were evaluated, corresponding to 14 species and two hybrids. A total of 30 plants per genotype were transplanted to the previously infested substrate (soil and manure in a ratio of 5:3, v:v), and after acclimatization were subjected to water deficit. The plants were evaluated during 120&#xa0;days after inoculation (DAI). At the end of the study, plants that did not show symptoms were subjected to reisolation. The accessions corresponding to two species, <i>P. mucronata</i> and <i>P. foetida</i> did not show wilt symptoms. However, it was possible to identify the presence of <i>FOP</i> in the roots of these species at 120 DAI. <i>P. gibertii, P. setacea, P. alata</i> and <i>P. cincinnata</i> showed high plant mortality and consequently a low cumulative survival rate. However, for the last two species, wide variability was observed between accessions. The results of this study made possible to pre-select 12 accessions as possible candidates for use in breeding programs.</p> Graphical abstract <p></p>

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Screening of Passiflora spp. accessions for resistance to Fusarium oxysporum f. sp. passiflorae

  • 期刊论文

  • 发表日期：

    2025年11月13日

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  • Luana Nascimento da Silva,
  • Lucas Kennedy Silva Lima,
  • Onildo Nunes de Jesus

摘要

Fusarium wilt caused by the fungus Fusarium oxysporum f. sp. passiflorae (FOP) is considered the main soil disease that affects passion fruit. The use of resistant cultivars is the main strategy to deal with the disease. Therefore, screening was carried out on Passiflora L. germplasm to identify sources of resistance to FOP under controlled conditions. Forty accessions were evaluated, corresponding to 14 species and two hybrids. A total of 30 plants per genotype were transplanted to the previously infested substrate (soil and manure in a ratio of 5:3, v:v), and after acclimatization were subjected to water deficit. The plants were evaluated during 120 days after inoculation (DAI). At the end of the study, plants that did not show symptoms were subjected to reisolation. The accessions corresponding to two species, P. mucronata and P. foetida did not show wilt symptoms. However, it was possible to identify the presence of FOP in the roots of these species at 120 DAI. P. gibertii, P. setacea, P. alata and P. cincinnata showed high plant mortality and consequently a low cumulative survival rate. However, for the last two species, wide variability was observed between accessions. The results of this study made possible to pre-select 12 accessions as possible candidates for use in breeding programs.

Graphical abstract