Data/hora: 16/06/2024 08:25:33

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	30/08/2022	
Data da última atualização: 	30/08/2022	
Autoria: 	HILHA, A.; ANDRADE, C. E. L.; BEISE, D. C.; NETTI, L. K. G.; SOUZA, A. L. K.; NODARI, R. O.	
Título: 	Evaluation of ripe grape rot in PIWI selections during physiological maturation in Videira - SC, Brazil.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	In: SIMPÓSIO DE FRUTICULTURA DA REGIÃO SUL , 3., 2022, Online. Resumos... Chapecó : Epagri, 2022.	
Idioma: 	Inglês	
Conteúdo: 	Most of the southern regions of Brazil have favorable conditions for the occurrence of  diseases, due to the presence of temperature and rain-induced diseases. Genetic  breeding has allowed the development of cultivars that carries out resistance alleles to  downy mildew and powdery mildew, called PIWI varieties. However, varieties with ripe  rot resistance are not yet available. The objective of this work is to evaluate the  incidence and severity of ripe grape rot in different PIWI selections. The work was  carried out in the experimental stations of Epagri, Videira, SC, with periodic monitoring  of average, maximum and minimum air temperature (°C), rainfall (mm) and relative  humidity (%). All selections used come from modified backcrossing, with 90% of V.  vinifera genome, being Gf.2004-043-0004, Gf.2004-043-0015 and Gf.2004-043-0021.  The incidence and severity (in %) of the ripe rot were performed at harvest on five  clusters of both two randomly chosen plants, according to a diagrammatic scale of rot  in vine clusters. A randomized block design was applied, with data normality and  Analysis of Variance (ANOVA). An average temperature of 22.8°C was observed  during the evaluations, with a maximum precipitation of approximately 175 mm, and a  minimum of 20 mm, and relative humidity always above 75%. There was a different  behavior among the PIWI selections in relation to the incidence and severity of ripe rot.  Selections Gf.2004-043-0021 and Gf.2004-043-0004 showed lower resistance to ripe  rot occurrence, compared to Gf.2004-043-0015, which showed greater resistance to  ripe rot occurrence, as well as lower level of severity. Since the latter showed its ability  to resist the negative effects, even in favorable conditions to the development of the  disease, it could used for breeding purposes. Overall, it is possible to classify Gf.2004- 043-0004 as more susceptible, Gf.2004-043-0021 intermediate and Gf.2004-043-0015  less susceptible for both evaluated characteristics.	
Thesagro: 	Coletotrichum spp; Illnesses; Ripe grape rot; Vine; Vitis vinifera.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_53797.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
Exemplares: 	Epagri-Sede - (107266-1) - UPC - PL - DD -  -  -  - DIS