Banca de DEFESA: ALEX ÁLVARES DA SILVA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : ALEX ÁLVARES DA SILVA
DATE: 29/02/2024
TIME: 08:00
LOCAL: SALA DE AULA LASAPSA
TITLE:

MORPHOPHYSIOLOGICAL, BIOCHEMICAL, PRODUCTIVE AND POST-HARVEST OF SOUR PASSION FRUIT FRUITS GRAFTED UNDER SALINE WATER STRESS

KEY WORDS:

MORPHOPHYSIOLOGICAL, BIOCHEMICAL, PRODUCTIVE AND POST-HARVEST OF SOUR PASSION FRUIT FRUITS GRAFTED UNDER SALINE WATER STRESS

PAGES: 116
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

Passion fruit production is of great importance in the world, with Brazil being the largest producer and consumer in the world. The Brazilian Northeast region is responsible for 70% of national production, despite this, the productivity of this region is severely impacted by abiotic (water deficit and salinity) and biotic factors (fusariosis). Thus, the objective of this work was to evaluate the positive and/or negative impacts of adopting Passiflora Edulis Sims cv. SCS437 Catarina on Passifora foetida L. cv. UFERSA BRS RM 153 under saline water stress conditions. The research was divided into three experiments, the first being conducted in a greenhouse in DIC with four replications in a 3 x 2 factorial scheme, respectively, three combinations of grafted species (P. foetida L. grafted onto itself (F + F ), P. edulis Sims grafted onto itself (E + E) and P. edulis Sims grafted onto P. foetida L.) and two salinity levels of irrigation water (0.5 and 6.0 dS m-1), The synthesis of hydrogen peroxide (H2O2) and catalase activity in leaves and roots at the seedling stage are evaluated. The second was conducted under field conditions using cv. SCS437 Catarina grafted onto cv. UFERSA BRS 153 (P. foetida L.) under four irrigation depths (L) (L1= 40%, L2= 60%, L3= 80% and L4= 100% of field capacity) and four salinity levels (S ) of water (S1= 1.5, S2= 3.0, S3= 4.5 and S4= 6.0 dS m-1) in DBC with seven treatments T1 (L1S1), T2 (L2S1), T3 (L3S1 ), T4 (L4S1), T5 (L4S2), T6 (L4S3) and T7 (L4S4) and four replications, the physiology and production of the plants were evaluated. In the third test conducted in the laboratory in DIC and a 2 x 4 x 5 factorial scheme, with two electrical conductivities of the irrigation water (1.5 and 6.0 dS m-1), four maturation stages (stage 1 (E1) – 0-15% yellow, E2 – 16-50% yellow, E3- 51-85% yellow and E4- 86-100% yellow) and five storage times (0, 3, 6, 9 and 12 days). The impact of salinity and ripening index on the post-harvest shelf life of the fruits was evaluated. In Test 1, significant differences were found in the H2O2 content in leaves and roots, CAT activity and number of leaves between the combinations of grafted species. CAT activity in leaves and roots was influenced by the combination of species and salinity. In test 2, it was concluded that increasing EC up to 4.5 dS m-1 resulted in productivity gains attributed to the rootstock. In Test 3, it was determined that higher salinity (6.0 dS m-1) led to an increase in PM and reduced the TA of the fruits during storage. Increases in RP, RS, EF and reduction in EC are negative as they reduce product acceptance.

COMMITTEE MEMBERS:
Externa ao Programa - 1509522 - EDNA MARIA MENDES AROUCHA - nullExterno ao Programa - 1847005 - FRANCISCO DE ASSIS DE OLIVEIRA - nullExterno à Instituição - FRANCISCO VANIES DA SILVA SA - UFERSA
Externo ao Programa - 3299101 - JOAO EVERTHON DA SILVA RIBEIRO - nullPresidente - ***.486.364-** - JOSE FRANCISMAR DE MEDEIROS - UFERSA