1,721,007 research outputs found
Ensayos de cruzamientos sobre Opuntia spp en Italia.
No full textOpuntia genetic variability trials were carried out in Sardinia (Italy) starting from 1995. In order to overcome the difficulties related to the cleistogamy and the poliembryony of the genus, a breeding strategy was planned based on setting up a hybridization technique and plantlet development through embryoculture. About one thousand hybrids were obtained by crossing O. ficus–indica Italian varieties, and other Opuntia species (O. amyclaea, O. basilaris, O. dillenii, O. lindheimeri, O. polyacantha, O. soherensii, and O. sulfurea). The effectiveness of the breeding tecniques was evaluated and the results on the level of compatibility in the different crosses and hybrids fertility are reported
L’analisi e la valorizzazione del patrimonio genetico della vite. risultati ottenuti in Sardegna
No full textOpuntia sp. Adaptability to the Mediterranean Environment
No full textThe relationships between Opuntia sp. and the Mediterranean environment of the island of Sardinia were studied based on the identification of the limiting ecological factors, using statistical techniques and GIS software. In 100 test-sites, representative of the area variability, Opuntia sp. populations were morphologically and genetically characterized. GIS application was implemented to analyze, update and encode all collected data, thus enabling thematic maps to be drawn. FloraMap, a specific GIS application, was successfully used to predict the Opuntia sp. distribution in Sardinia
Valutazione delle risorse genetiche in popolazioni locali di albicocco, ciliegio, mandorlo e susino
No full textFabbisogno in freddo nel germoplasma di ciliegio della Sardegna. Indagine sulla cultivar “Bonnanaro”
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Characterization of Seedlings Obtained from Open Pollinated 'Gialla' Cactus Pear (Opuntia ficus-indica)
No full textA population of approximately 700 cactus pear seedlings of different ages obtained from ripe seeds of open pollinated 'Gialla' (selection GSH), was studied in Sardinia, Italy. A dataset of morphological characters of seedlings and mother plant according to the Cactus Pear Descriptor List was completed. Most seedlings showed high vigor as compared to mother plants. Both populations showed elliptic cladodes. Thirteen individuals bearing fruits with less than 200 seeds/fruit were found among seedlings. Large differences between populations were found in regard to ripening season. Selection allowed identification of seedlings with interesting horticultural traits; early ripening, large fruits, and high percentage of aborted seeds. The selected seedlings will be further evaluated as basic genetic material to develop new varieties specific for the Mediterranean area
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