Identification of cytoplasm type and nuclear Ms gene in onion cultivars

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dc.creatorDaniel Pedrosa Alves
dc.creatorCandida Elisa Manfio
dc.creatorGustavo Henrique Ferrero Klabunde
dc.creatorEdivânio Rodrigues de Araújo
dc.creatorFábio Satoshi Higashikawa
dc.creatorRafael Simões Tomaz
dc.creatorLeonardo Lopes Bhering
dc.creatorMichael John Havey
dc.date2024
dc.date.accessioned2026-07-07T04:30:15Z
dc.descriptionOpen-pollinated onion cultivars predominate in the southern region of Brazil, due to their higher adaptability to local climatic conditions, unlike commercial hybrids, which have shown a lower adaptability. Cytoplasmic male sterility (CMS) systems are employed to develop hybrid onion cultivars. Two molecular markers, 5'cob and orfA501, were used to differentiate the cytoplasm type, and the AcSKP1 marker to identify the nuclear male fertility-restoring locus (Ms). A total of 1,126 plants from the most common onion cultivars grown in southern Brazil, including Bola Precoce®, Crioula®, Valessul®, Mega®, Joia® and Princesa do Sul®, were analyzed using all the three markers. An extremely rare occurrence of the S cytoplasm was observed among the cultivars, being detected in only 1.8 % of the samples, while the T cytoplasm was the most prevalent, accounting for 56.3 % of the samples. Among the 1,126 plants analyzed, only three exhibited the S cytoplasm and were recessive for the Ms-locus (Smsms). Additionally, 49 plants with the N-cytoplasm (as per the Engelke's classification) and recessive for the nuclear genotype (Nmsms) were identified, 45 of which were pollen producers. The male-fertility restoration occurred in 22.2 % of the crosses between Tmsms male-sterile plants and male-fertile N cytoplasmic-msms plants (as per the Engelke's classification).
dc.formatapplication/pdf
dc.identifier1517-6398
dc.identifierhttps://www.redalyc.org/articulo.oa?id=253076425026
dc.identifierhttps://www.redalyc.org/journal/2530/253076425026/
dc.identifierhttps://www.redalyc.org/journal/2530/253076425026/html/
dc.identifierhttps://www.redalyc.org/journal/2530/253076425026/253076425026.epub
dc.identifierhttps://www.redalyc.org/journal/2530/253076425026/movil
dc.identifier10.1590/1983-40632024v5479620
dc.identifier.urihttp://hdl.handle.net/123456789/463390
dc.languageen
dc.publisherUniversidade Federal de Goiás
dc.relationhttp://www.redalyc.org/revista.oa?id=2530
dc.rightsPesquisa Agropecuária Tropical
dc.sourcePesquisa Agropecuária Tropical (Brasil) Vol.54
dc.subjectAgrociencias
dc.titleIdentification of cytoplasm type and nuclear Ms gene in onion cultivars
dc.typeartículo científico

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Pesquisa Agropecuária Tropical - Universidade Federal de Goiás