Data/hora: 01/06/2024 08:14:06

Biblioteca(s): | Epagri-Sede.
Tipo da produção científica: | Artigo em Periódico Indexado
Data corrente: | 08/12/2022
Data da última atualização: | 08/12/2022
Autoria: | SÁNCHEZ-MORA, F. D.; SAIFERT, L.; ZANGHELINI, J.; PAIXÃO, C. A.; VESCO, L. L. D.; EIBACH, R.; BÓ, M. A. D.; NODARI, R. O.; WELTER, L. J.
Título: | Pyramiding of resistance alleles to grape powdery mildew assisted by molecular markers.
Ano de publicação: | 2022
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 22, n. 4, p. e42252247, 2022.
Idioma: | Inglês

Conteúdo:

Disease resistance gene pyramiding is a widely used strategy to
enhance resistance durability. Marker-assisted selection (MAS) was applied
to pyramide the alleles Run1 and Ren3, which confer resistance against grape
powdery mildew (Erysiphe necator). Two F1  full-sibs carrying Run1 and Ren3
in heterozygosity were selfed to develop the breeding populations used in
the analysis. From the 637 genotyped plants, 313 (50.6%) had the Run1 and
Ren3 pyramided. Seven (1.1%) of them exhibited the two resistance alleles in
homozygosity. Plants without any resistance alleles had the highest disease
severity (X&#773; = 7.3), while the ones with the Run1 allele both in homozygosity and
heterozygosity were highly resistant (X&#773; = 1.5). Similar level of resistance was
observed in the plants containing Run1 and Ren3 pyramided (X&#773; = 1.3). Plants
containing Run1 and Ren3 pyramided in homozygosity are important genetic
resources for grape breeding programs in Brazil.

Thesagro: | Erysiphe necator; melhoramento genético; resistência a doenças; sustentabilidade; Vitis vinifera.
Categoria do assunto: | G Melhoramento Genético
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_55807.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
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