ISHS Acta Horticulturae 800: X International Pear Symposium
PEAR 'IAC PRINCESINHA': NEW EUROPEAN TYPE CULTIVAR FOR SUBTROPICAL CLIMATE |
| Authors: | E.A. Chagas, F.A. Campo Dall¿Orto, M. Ojima, W. Barbosa, R. Pio |
| Keywords: | Pyrus communis L., genetic improvement, production, fruit quality, subtropical areas |
| Abstract:
As a result of the Instituto Agronômico (IAC) breeding program carried out in Brazil, 'IAC Princesinha' (16-30) was selected from the first generation of the controlled crossing between 'Hood' and 'Packham's Triumph'. It is a cultivar option besides the 'D'Água' and 'Primorosa' (9-3) pears, which are the main cultivars of pear for subtropical areas of Brazil, due to its similarities in plant vigor and fruit appearance. The 'IAC Princesinha' fruit’s average weight is 140 grams, with pyriform shape, a pronounced “neck”, a thin and long peduncle; smooth and thick skin, green-whitish color and small clear punctuations on the surface; the pulp is white, firm a little granulated and succulent, with a sweet-acid and pleasant flavor. The plant shows good vigor, medium size, thin and abundant fruitful branches; light foliage, medium to small leaves, green-bluish, with medium susceptibility to quince leaf blight (Entomosporium maculatum). It gives precocious production and shows high adaptation to areas of mild winters (average temperature around 21°C and 100 hours of chilling units - CU). In an experiment conducted in Jundiaí-SP (23°41' S; 39,6 CU), with another seven pear selections for subtropical climates grafted on 'Portugal' quince rootstock and planted at spacing of 4.0 m x 2.0 m (1250 plants.ha-1), 'IAC Princesinha' yielded 4 kg per plant on average at 44 fruits per plant, with 91 g as an average weight. This average number of fruits and production was superior to all the other selections in the experiment, together with 'Primorosa'. Therefore, this new cultivar appears to be an excellent option for European pear production in areas of subtropical climate, where the aim is fruits for fresh market consumption. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
