Banca de QUALIFICAÇÃO: FERNANDA SOUZA LOPES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE: FERNANDA SOUZA LOPES
DATA: 28/10/2020
HORA: 13:00
LOCAL: Departamento de Biologia - Remoto
TÍTULO:

Development and validation of diagrammatic scale for white mold on tobacco leaf discs

PALAVRAS-CHAVES:

Sclerotinia sclerotiorum; Nicotiana tabacum; Diagrammatic scale.

PÁGINAS: 13
GRANDE ÁREA: Ciências Biológicas
ÁREA: Genética
RESUMO:

Sclerotinia sclerotiorum is geographically cosmopolitan and has a broad ecological distribution, although it is most common in temperate regions. More than 400 species are susceptible to this pathogen, including most vegetables (e.g. potato, tomato, lettuce, and crucifers), tobacco, and others .The aim of this study was to develop and validate a diagrammatic scale to aid the visual assessment of white mold in Tobacco. The diagrammatic scale from 0 to 100% was analyzed according to precision, accuracy, and reproducibility. Six evaluators estimated the white mold severity level with and without the diagrammatic scale, considering six levels of disease severity using 50 leaf discs images. Without and with (1^st and 2^nd evaluation) the use of the scale, the evaluator 1 obtained coefficients of determination (R²) from 0,20 to 0,82 and 0,73, respectively. The variation coefficient (CV%) observed without the scale was 37.36% and after utilizing it were 5.97% and 10.47% , indicating a good homogeneity of the data. So, the proposed diagrammatic scale was considered appropriate to estimate the severity of Sclerotinia sclerotiorum in Nicotiana tabacum.

MEMBROS DA BANCA:
Externo ao Programa - CARLOS EDUARDO PULCINELLI - DBI/ICN (Membro)
Externo ao Programa - EDSON AMPELIO POZZA - DFP/ECA (Membro)
Externo à Instituição - JOSÉ MARIA VILLELA PÁDUA - UFLA (Membro)
Interno - VINICIUS QUINTAO CARNEIRO (Suplente)
Presidente - WELISON ANDRADE PEREIRA (Membro)