Reproductive phenology, floral biology and flower visitors in mango (Mangifera indica L.) crop Hilacha and Tommy Atkins cultivars in the Upper Magdalena Valley (Colombia)

In order to advance the knowledge of the mango's reproductive biology in tropical environmental conditions; phenological development, morphological characterization, anthesis, grain pollen description and floral visitors were assessed in the mango cultivars Hilacha and Tommy Atkins in the Upper...

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Detalles Bibliográficos
Autores Principales: Corredor P., Jenny Paola, García L., Jairo
Formato: Artículo (Article)
Lenguaje:Español (Spanish)
Publicado: Corporación Colombiana de Investigación Agropecuaria (Agrosavia) 2018
Materias:
Acceso en línea:http://hdl.handle.net/20.500.12324/33874
Descripción
Sumario:In order to advance the knowledge of the mango's reproductive biology in tropical environmental conditions; phenological development, morphological characterization, anthesis, grain pollen description and floral visitors were assessed in the mango cultivars Hilacha and Tommy Atkins in the Upper Magdalena Valley region (Colombia). Results showed that these cultivars did not differ in their phenological development from bud to fruit formation. However, differences in the number of days required for fruit formation were observed, (‘Hilacha’ 55.9 ± 2.7 days; ‘Tommy Atkins’ 78.6 ± 3.3 days). In addition, differences were found in morphological characterization, regarding shape, width and length of the panicle, hair density and the degree of branching of the inflorescence. The anthesis event, took place mostly between 17:00 h and 7:00 h, indicating a greater preference to dark conditions and lower temperatures (night or early morning). Moreover, the average size of pollen grains was 31 ± 0.2 μm for the two cultivars; grain viability was 85.5% for ‘Hilacha’ and 83.4% for ‘Tommy Atkins’. On average, there were 1,313 ± 100 grains per anther for ‘Hilacha’ and 1,002 ± 94 for ‘Tommy Atkins’. Among flower visitors, six taxonomic orders were observed: Coleoptera, Diptera, Hemiptera, Homoptera, Hymenoptera and Lepidoptera; and the Arachnida class.