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Castro A.C.R.,Embrapa Tropical Agroindustry Corporation | Morais E.B.,Embrapa Tropical Agroindustry Corporation | Mourao I.C.S.,Embrapa Tropical Agroindustry Corporation | De Carvalho A.C.P.P.,Embrapa Tropical Agroindustry Corporation | Loges V.,University of Pernambuco
Acta Horticulturae | Year: 2010

The Anthurium genus comprises about 1100 species, most of them with ornamental potential. In the last few years the commercialization of new foliage has been growing up. It is necessary to introduce new foliage crops into the market and Anthurium species are an excellent option for cut foliage exploration. The aim of this work was to evaluate ten native Anthurium accessions, through morphological descriptors. The following characteristics were evaluated: leaf shape; petiole colour, length and diameter; main nervure colour; pulvine colour and aspect; inflorescence peduncle length and diameter; spadix colour; spathe shape, length and colour. Evaluation was made for: plant height, growth habit, leaf number, pot fulfillment and emitted shoot number. A large variation was observed for leaf, inflorescence and general plant aspects in all accessions. Some plant characters like height, growth habit, number of emitted shoots are important to define plant spacing, pot size and crop management. The leaf appearance was the most important part of plant to be considered in a first selection: leaf shape, long and straight petioles, diameter with no more than 20 mm are desired morphological characteristics for cut foliage. Accessions with short petioles and a large number of leaves and high pot fulfillment capability maybe better adapted to growth as potted plants. The ten characterized accessions present foliage characteristics for commercial exploration and could be used as material for future breeding programs since wild species plays an important role in the interspecific breeding. As its commercial exploitation is relatively recent, basic information is needed regarding growth aspects of the native Anthurium.

De Araujo P.G.P.,Federal Rural University of Pernambuco | Leite K.P.,Federal Rural University of Pernambuco | Silva S.S.L.,Federal Rural University of Pernambuco | Bastos S.M.S.L.,Federal Rural University of Pernambuco | And 2 more authors.
Acta Horticulturae | Year: 2015

The favourable climatic conditions make Brazil one of the most important producers of tropical flowers, among them some Heliconia native species are remarkable. In the present study 19 acceßions of H. chartacea were characterized using morphological descriptors related to pseudostem, leaf and inflorescences. The purpose was to select acceßions with desirable aspects for cut flower production. The experiment was carried out during August 2014 and January 2015. Differences were observed in morphological descriptors related to the inflorescences. In 54% of the inflorescences that were harvested, the length was between 30 and 60 cm and varied according to the number of open bracts. The width was larger than 40 cm in 75% of the inflorescences. About 70% of the harvested stems had weight above 200 g and the average stem diameter was between 20-30 mm. The latter feature was directly related to the stiffneß of the flower stem. The length of the peduncle varied between 10 and 20 cm for 60% of the stems. The vase life of the flower stems ranged between 5 and 11 days. In general, most of the studied acceßions were suitable for use as cut flower, nevertheleß more detailed evaluation is neceßary.

Castro A.C.R.,Embrapa Tropical Agroindustry Corporation | Sobreira Junior O.V.,Embrapa Tropical Agroindustry Corporation | Bordallo P.N.,Embrapa Tropical Agroindustry Corporation | Oliveira K.G.S.,Embrapa Tropical Agroindustry Corporation | Bezerra C.F.,Embrapa Tropical Agroindustry Corporation
Acta Horticulturae | Year: 2011

The cashew germplasm bank at Embrapa contains accessions collected in Brazil, including some accessions from the savannah. This is a biome with great biodiversity, typically represented by small, tortuous trees. This rich collection is not yet fully characterized, a fact that complicates the use of this plant material in breeding programs. The goal of this work was to characterize 46 accessions of cashew collected in the savannah. Morphological characterization was performed during 2007 to 2009. Among the A. occidentale accessions, 60% had a tall canopy and an upright/open tree shape, 50% had a rounded peduncle, 75% had an orange peduncle, 80% had reddish green young leaves, 80% had green mature leaves, 60% had obovate and brittle leaves while 40% instead had oval and leathery leaves. Among the A. othonianum accessions, 66% had a semi-tall canopy, 54% had an upright and compact tree shape while 41% instead had an upright and open tree shape, 66% had reddish green young leaves, 79% had green mature leaves, 96% had obovate leaves, and 75% had leathery leaves. The majority of the A. humile accessions consisted of dwarf trees with a spreading tree shape, they had reddish green young leaves, and green and leathery adult leaves. Symptoms of anthracnose and black mold were observed for all species. The species showed differences for all characters evaluated and also a high variability within species.

Castro A.C.R.,Embrapa Tropical Agroindustry Corporation | Bordallo P.N.,Embrapa Tropical Agroindustry Corporation | Cavacanti J.J.V.,Embrapa Tropical Agroindustry Corporation | Barros L.M.,Embrapa Tropical Agroindustry Corporation
Acta Horticulturae | Year: 2011

The cashew germplasm bank located in Pacajus, Ceará State, Brazil, holds 621 accessions, most of which belong to Anacardium occidentale. Introduction of plants into the germplasm bank started in the 1950s. Nowadays, the main goals of the cashew germplasm bank is to document and conserve plant material, which can then be used to enrich the available genetic variation in the species, serve as a basis for agronomic and morphological characterizations of accessions, and support breeding programs. The accessions have been characterized with morphological, agronomic and molecular descriptors. The genetic variability contained in the collection has allowed development of early dwarf cashew clones, recommended for commercial planting in northeastern Brazil since the 1980s until today. The genetic basis of early dwarf cashew has been expanded by natural and artificial hybridization with regular cashew genotypes from the germplasm bank, to increase the weight and size of nut and kernel. Interspecific hybrids of A. occidentale × A. othonianum and A. occidentale × A. microcarpum have been produced in order to transfer anthracnose resistance alleles and desired quality traits to table cashew. Passportization data have been submitted to the SIBRAGEN data bank.

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