Data/hora: 01/06/2024 08:46:26

Biblioteca(s): 	Epagri-Sede.	
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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