Name: ANDREA PIRES
Publication date: 26/02/2021
Advisor:
Name |
Role |
|---|---|
| SARA DOUSSEAU ARANTES | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| ANDREIA BARCELOS PASSOS LIMA GONTIJO | Internal Examiner * |
| SARA DOUSSEAU ARANTES | Advisor * |
Summary: Andrea, Pires; M.Sc .; Federal University of Espirito Santo; February 2021; Flowering control of pineapple 'Pérola' and 'Vitória' using aviglycine hydrochloride (AVG); Advisor: Sara Dousseau Arantes; Co-supervisor: Cláudia Simone Madruga Lima.
The main factor that makes it difficult to harvest pineapple during periods of more advantageous prices on the market is the natural induction of flowering. Aviglycine hydrochloride (AVG) is an inhibitor of ethylene synthesis worldwide recommended for the control of natural pineapple flowering, however, the recommended dose depends on the environment, genotype and age of the plant. The objective was to evaluate the effect of AVG concentration and control periods in the pineapples Pérola and Vitória. The study was conducted in the field, in the municipality of Sooretama, Espírito Santo-ES, Brazil. The experimental design used was randomized blocks in a 3x3 + 1 factorial scheme, consisting of three concentrations (100, 200 and 400 mg L-1) and three control periods (April-July, May-July and June-July) that corresponded to flowering control in the periods from April to July, May to July and June to July, respectively. The additional treatment (control) was the plants without any application. Each treatment consisted of four replications and each plot consisted of 24 plants. Weekly assessment of the inflorescence emergence was performed, calculating the accumulated flowering. Physical-chemical analysis of the collected fruits was carried out and the data were submitted to analysis of variance and Tukey test (p <0.05). It was found that the treatments inhibited natural flowering in both pineapple cultivars and the inhibition was enhanced as the concentration was increased. AVG influenced the quality of pineapple fruits.
Key words: Ananas comosus L., flowering, floral inhibition.
