Banca de QUALIFICAÇÃO: LAURA CARINE CANDIDO DINIZ CRUZ

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : LAURA CARINE CANDIDO DINIZ CRUZ
DATE: 23/06/2025
TIME: 13:30
LOCAL: Defesa remota por web conferência
TITLE:

Tomato grafting: production, fruit quality and control of fusarium wilt

KEY WORDS:

Solanum lycopersicum L.; Fusarium oxysporum f. sp. lycopersici; protected cultivation.

PAGES: 20
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitotecnia
SPECIALTY: Manejo e Tratos Culturais
SUMMARY:

With the growth of tomato cultivation in protected environments and the consequent worsening of diseases caused by soil pathogens, the search for grafted seedlings has increased. Thus, the present study aimed to: 1) evaluate five rootstock varieties for resistance to three races of Fusarium oxysporum f. sp. lycopersici (Fol); 2) evaluate the efficiency of grafting on preselected rootstocks in controlling fusarium wilt, and gains in precocity, productivity and fruit quality. Initially, five rootstocks (Defensor, Green Power, Gungang, Shincheonggang and SVTX6258) and four cultivars (Aguamiel, IPA-7, Ponderosa and Serato) were tested for resistance to races 1, 2 and 3 of Fol. The tests were performed on seedlings and inoculation via immersion of roots in a suspension of microconidia (5 x 106 mL-1 of soil) of the respective Fol races and evaluation after 28 days. Then, the development, production up to the 3rd bunch, fruit quality and disease intensity were evaluated in two cultivars, Serato and Compack, in ungrafted stock and grafted on Defensor, Green Power and Shincheonggang. Pots of 11.0 L, soil inoculated with 3.5 x 104 microconidia mL-1 of Fol race 3, and non-inoculated control were used. All rootstocks showed resistance to the pathogen, but only Defensor showed immunity to the three races. Plants grafted on the three rootstocks showed discrete symptoms of the disease and higher production than that observed in plants in ungrafted stock, but without differing among themselves. In non-inoculated soil, there were no differences between the free-standing and grafted plants. caused by fusarium wilt and bacterial wilt; recording the effects on plant development, production and quality of fruits produced, with emphasis on contamination by toxic metals. Furthermore, it is expected that a conclusion will be drawn on the economic viability of using the technique.

COMMITTEE MEMBERS:
Presidente - 1213072 - MARGARIDA GORETE FERREIRA DO CARMO
Interno - 3298569 - AURIVAN SOARES DE FREITAS
Interna - ***.210.947-** - MARCIA SOARES VIDAL - EMBRAPA
Externo à Instituição - CARLOS ANTÔNIO DOS SANTOS