Banca de QUALIFICAÇÃO: PAULA FURTADO DE PADUA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE: PAULA FURTADO DE PADUA
DATA: 05/08/2020
HORA: 08:00
LOCAL: Google Meet
TÍTULO:

HERANÇA DA RESISTÊNCIA À MANCHA ANGULAR NA LINHAGEM MAIII-16.159 DE FEIJOEIRO

PALAVRAS-CHAVES:

Angular Leaf Spot; PhaseSyndicate joga pra fora olus vulgaris; Genetic improvement of plants.

PÁGINAS: 30
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Melhoramento Vegetal
RESUMO:

The angular leaf spot (ALS) of the common bean caused by the fungus Pseudocercospora griseola, is one of the most important diseases of crop. The most effective strategy for ALS control is the use of genetic resistance that is quantitative, with major and minor genes. Identification of resistance genes is important for use in common bean breeding programs. The line MAIII-16.159 obtained from the recurrent selection program for ALS conducted by the Universidade Federal de Lavras in partnership with Embrapa has shown high resistance to different P.griseola strains. During the Common Bean Disease Workshop on Angular Leaf Spot and Root Rot, carried out in Skukuza, South Africa, in 2015, this line was indicated to compose the new international differential cultivars set for the ALS. However, there is no information about the resistance genes present in this line. To obtain this information, the line MAIII-16.159 was crossed with line BRS Horizonte (susceptible) and F₁, F₂ and F_2:3 generations were obtained. The F₂ and F_2:3 plants were assessed in four experiments. Two P. griseola strains, race 63-63 and 63-23, were inoculated in plants in V2 and V3 stages.  Disease severity was assessed using scores scales. Segregation in the F₂ and F_2:3 revealed a gene of major effect, and that dominant allele is responsible for resistance in the line MAIII-16.159.

MEMBROS DA BANCA:
Presidente - ELAINE APARECIDA DE SOUZA (Membro)
Externo à Instituição - FERNANDA APARECIDA CASTRO PEREIRA - ESALQ (Membro)
Interno - FLAVIA MARIA AVELAR GONCALVES (Suplente)
Externo à Instituição - THIAGO LIVIO PESSOA OLIVEIRA DE SOUZA - EMBRAPA (Membro)
Interno - VINICIUS QUINTAO CARNEIRO (Membro)