LIBRO-CONGRESO-CITRUS

to 1980. These genotypes were examined for 22 pomological and four plant characteristics. Fruits were
harvested at optimal maturation stage and yield/tree rates were calculated individually. Selections of 20
nucellar oranges, which were named as ‘Hamlin (14-17)’, ‘Hamlin (14-15)’, ‘Magnum Bonum’, ‘Trovita (A-
35)’, ‘Parson Brown’, ‘Portakal (P-24)’, ‘Portakal (P-28)’, ‘Shamouti WN’, ‘Yafa (14-4)’, ‘Yafa (A-21)’, ‘Balady’,
‘Madame Vinous’, ‘Dörtyol Yerli’, ‘Pineapple’, ‘Barile’, ‘Kozan Yerli’, ‘Biondo’, ‘Biondo Ricco’, ‘Paperrind’
and ‘Valencia’ were evaluated in terms of their yield and fruit quality characteristics. Nucellar plants are
very important because they have the same genetic characteristics of their mother plants and are free of
most viruses. Among the results generated, it was found that ‘Hamlin (14-15)’, ‘Balady’, ‘Madame Vinous’,
‘Trovita (A-35)’ and ‘Valencia’ were very promising.
S17P04
Yield and fruit quality of two early maturing orange cultivars, ‘Navelina’ and ‘Fukumoto’, in
Andalusia (Spain)
Merino C., Hervalejo A., Salguero A., and Arenas Arenas F.J.
Instituto de Investigación y Formación Agraria y Pesquera (IFAPA), Cítricos, Spain. carlos.merino.luna.ext@juntadeandalucia.es
Spain has positioned itself as the sixth largest producer of citrus fruit and the number one exporter worldwide.
However the profitability of Spanish citrus orchards is threatened by the globalization of markets which has
led to Spanish citrus growers to be interested in new citrus cultivars in order to obtain greater profits and
to be more competitive by improving some aspects of the crop and marketing such as productivity and fruit
quality, and avoiding the concentration of the supply. This study was carried out to evaluate the yield and fruit
quality of ‘Navelina’ and ‘Fukumoto’, two early ripening sweet orange cultivars, in Andalusia (Spain). During
the 2010/2011 season, yield and fruit quality: size, weight, shape and external fruit colour, juice content,
total soluble solids concentration, total acids concentration and soluble solids/acid ratio were evaluated in a
experimental field, located in western Andalusia (Huelva), planted in June, 2006, in a radomized block design,
with ‘Carrizo’ citrange as rootstock and ‘Valencia Late Frost’ as interstock, thus being a double-budded
plantation. The results showed significant difference between ‘Navelina’ and ‘Fukumoto’ in fruit quality. Thus
‘Fukumoto’ induced more attractive fruit colour, while ‘Navelina’ had more rounded fruits, as a result of a
bigger height. Finally ‘Navelina’ and ‘Fukumoto’ had similar yields.
S17P05
Phenological growth stages of oranges and mandarins in Entre Ríos province (Argentina)
Rivadeneira M. F.
Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Concordia (INTA EEA Concordia), Entre Ríos,
Argentina. frivadeneira@correo.inta.gov.ar
The objective of this research was to evaluate flowering growth stages and ripening time of commercial
oranges and mandarins varieties in Entre Ríos, Argentina. The study was carried out in Concordia in a
plot located at the Estación Experimental Agropecuaria Concordia Instituto Nacional de Tecnología
Agropecuaria. The observations were made in four trees from 2005 to 2011 growing seasons and flower
phenology was recorded every two weeks in oranges (‘Newhall’, ‘Lane Late’, ‘Valencia Late’ and ‘Salustiana’),
mandarins (‘Okitsu’ satsuma and ‘Clemenules’ clementine), and hybrids (‘Ellendale’ and ‘Nova’) grafted
on trifoliate orange (Poncirus trifoliata) rootstock. Fruit quality was determined at commercial harvest.
Dates were standardized for ANOVA analysis and means compared with LSD Fisher. Date of full bloom
was year dependent (p