José Javier Martín Gómez

Allelopathic Effects of Aqueous Extracts of Ricinus communis L. on the Germination of Six Cultivated Species

Aims: The effect of aqueous extracts of castor bean (Ricinus communis L.) On the germination of six cultivated crops was investigated. Study Design: Samples of R. communis were harvested from the region of Gabès (south of Tunisia) and tested at laboratory on crops seeds. Place and Duration of Study: Regional station of GabèsNational Institute of Research in Rural Engineering, Waters and Forests – Tunisia, between October and December 2014. Methodology: Extracts were obtained after an incubation of 9 g of dry plant material (powder) in 100 ml distilled water during 48 hours at 60°C. The extraction was made from five parts of R. communis (root, twig, leaf, seed and pericarp) and used in germination tests. Results and Conclusion: Results showed two types of behavior: the aqueous extracts of root, Short Research Article Saadaoui et al.; IJPSS, 7(4): 220-227, 2015; Article no.IJPSS.2015.148 221 twig, and seed had a low effect of inhibition for all studied species. The aqueous extracts of leaf and pericarp had a high effect of inhibition. C. olitorius is the most tolerant species; its germination rate is 99, 99, 97, 96, 69.5 and 53.5% for aqueous extracts of root, twig, seed, leaf and pericarp respectively. L. culinaris is the most sensitive species; its rate of germination is 97, 68.5, 44, 3 and 0% for aqueous extracts of root, twig, seed, leaf and pericarp respectively. Leaf and pericarp aqueous extracts are the most inhibitive of germination resulting in germination rates lower than 16.5% for all studied species, except for C. olitorius, its germination rate is 69.5 and 53.5% with pericarp and leaf extract respectively. The aqueous extracts of R. communis inhibited root length in all studied species, essentially with the aqueous extracts of leaf and pericarp. These two parts of R. communis showed high allelopathy effect in percentage of germination and root length for all studied species.

Semillas de Ricinus comunis recogidas en doce poblaciones en Túnez

Images of the seeds were obtained with a scanner ScanJet 5300 C (HP). A list attached includes exact locations where seeds were gathered. This dataset is under a Creative Commons Attribution-Non commercial 4.0 International License.

Semillas de Jatropha curcas recogidas en la Estación Experimental de Dissa (Gabes, Túnez) en 2011, 2012 y 2013

Photographs taken with a digital camera Nikon Coolpix 950. This dataset is under a Creative Commons Attribution-Non commercial 4.0 International License.51 jpg files included

Semillas de Capparis spinosa recogidas en diez poblaciones en Túnez (2003)

Photographs taken with a digital camera Nikon Coolpix 950 adapted to a binocular Nikon SMZ. A list attached includes exact locations where seeds were gathered. This dataset is under a Creative Commons Attribution-Non commercial 4.0 International License. 304 jpg files included.

Advanced System for Management and Recognition of Minutiae in Fingerprints

This article briefly describes the advanced computer system designed for the recognition of minutiae in fingerprints digital images. The system provides both automatic and manual extraction of relevant data from the fingerprints images, storing that information in a database. Provides statistical calculations, including calculations for cumulative frequency analysis; this is an important parameter for calculating distinction rates. The system is enabled to differentiate by sex, finger, fingerprint type and sector that has been divided the dactylogram.