Name: DAYANE LITTIG BARKER KLEM
Publication date: 28/07/2017
Advisor:
Name |
Role |
|---|---|
| SARA DOUSSEAU ARANTES | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| EDILSON ROMAIS SCHMILDT | Co advisor * |
| SARA DOUSSEAU ARANTES | Advisor * |
Summary: In the pineapple crop different management strategies can be used to optimize the production and quality of the fruits in order to meet the requirements of the production chain. Among the recommended strategies are the artificial induction of flowering, however, the success of this technology is highly dependent on the stage of vegetative development of the crop, which depends mainly on the size, type of seedling and planting season. Thus, the aim of this work was to establish a flowering management strategy to optimize fruit production and quality, using different types of cuttings and ages of floral induction. The genotype studied was the Vitoria cultivar, because it be resistant to Fusariose, absence of spines, excellent productivity and fruit quality. In this context, two papers were developed. The first, titled "Performance of pineapple 'Vitória' in response to the types of cuttings and ages of floral induction" and the second, titled "Post-harvest quality of the 'Vitória' pineapple obtained by different types of cuttings and ages of floral induction. The experiment was conducted in the area of the Experimental Farm of the Capixaba Institute of Research, Technical Assistance and Rural Extension, in the municipality of Sooretama-ES. The experimental design was a randomized block design in plots subdivided in time, with four replications. Each plot consisted of slip from 100 to 200 g and ratoon sucker from 201 to 300 g. The subplots were the ages of artificial floral induction (8, 10 and 12 months after planting) and
x
natural induction. Several characteristics related to the vegetative development, phenology, productivity and physical-chemical quality of the fruits were evaluated. It was observed a significant interaction between the factors studied for the variables of leaf width 'D' and total leaf area, number of shoots produced, as well as for the chemical variables of the fruits. The natural flowering occurred between 16 and 18 months after planting extending the crop cycle, however, it obtained higher production of slips and high productivity. The artificial induction of flowering at eight months after planting anticipates the harvest in up to 167 days compared to the other artificial inductions. The fruit biomass with crown was superior in natural flowering, with 58% of biomass gain compared to the induction at eight months. The artificial inductions resulted in fruits of smaller circumference, diameter and thickness of pulp. The plants artificially induced at 12 months and natural yielded fruits with superior physicochemical quality, for both types of cuttings used. It can be concluded that flowering management through floral induction is an important strategy to obtain fruits with varied characteristics that meet the requirements of the different types of internal and external markets. Therefore, for juices or sweets industries, induction can be performed in all periods evaluated to depend only on the fruit demand season. For markets of fresh fruits and / or exports, it is recommended to carry out the artificial induction from the 12 months to obtain a more uniform harvest or to induce naturally, if it is necessary to prolong the harvest period.
