Estudo comparativo do comportamento agronómico de cinco clones de perreira (Pyrus communis L.) cv. Rocha em três porta-enxertos

• Author(s): Madeira, Cláudia Isabel Delgado
• Date: 2012
• Persistent ID: http://hdl.handle.net/10400.5/5327
• Origin: Repositório da UTL
• Subject(s): Pyrus communis L.; Rocha pear; clone; clone/rootstock; rootstock
• Document Type: Master thesis
• Language: Portuguese
• Advisor(s): Oliveira, Cristina Maria Moniz Simões; Azevedo, João Filipe Santos
• Contributor(s): Repositório da Universidade de Lisboa

Description

Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia

With the aim of evaluating the potential of five ‘Rocha’ pear clones (1, 2, 4c, T and Z), a field trial was conducted at APAS orchard, located in Cadaval (Sobrena). All the clones were grafted onto Provence BA-29, EMA and Sydo rootstocks and trees grown under identical soil and climate conditions. The agronomic characteristics and economic results were evaluated from 2006 until 2011 corresponding to the 5th and 10th year of the orchard. The field trial indicated that there isn’t an ideal combination of clone/rootstock leading to earlier pear production, trees with medium vigour, high fruit size, rounded shape fruits and good fruit quality. Combinations of Z/Sydo, 2/Sydo and T/Sydo reached the highest yields per unit/tree while the most productive was T/Sydo followed by Z/Sydo with a revenue of 42.968,3 €.ha-1 and 38.551,7 €.ha-1, respectively. Among the clones there were slight differences in fruit quality, the clones 4c, 1 and T produced pears with the highest fruit size and roundest shape fruits while the fruits of the clone T had the highest total solid soluble content. The rootstock Sydo achieved better results when comparing to BA-29 and EMA, resulting in earlier production of pears and increased yields, high fruit size and better shaped fruits.