1,721,090 research outputs found
Il progetto MONVER per la formazione transfrontaliera coordinata nelle filiere del verde
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Somatic embryogenesis from suspension cultures of Cyclamen: histological analysis and conversion to plant.
No full textNutraceutical value of edible flowers upon cold storage
No full textThe attraction and quality of edible flowers correlates with their high perishability. Few studies have evaluated whether edible flowers decay faster than they lose their nutraceutical value. In this experiment, ascorbic acid was negatively affected by cold storage in all the edible flowers investigated, whereas phenolic, flavonoid, and anthocyanin content were affected only in some cases. No decrease in total antioxidant activity was detected in any of the edible flowers at the end of their shelf life. Our dataset highlights that (i) the selection of edible flowers with low moisture content is key in ensuring a longer shelf life, and (ii) more effort should focus on preventing water loss in edible flowers
Influence of Seed Treatment on Germination Pattern of Chamaerops humilis
No full textDwarf fan palm (Chamaerops humilis L.) is an important Mediterranean species well known for many uses such as gardening, environmental restoration, and technological uses. Dwarf fan palm is usually propagated from seed, which takes up to 100 days to germinate. The germination pattern of dwarf palm seeds was studied during a 100-days length period in relation to different pre-sowing treatments (hot water, sulphuric acid, or mechanical scarification) in comparison to untreated control. A covariance analysis was performed to test the effect of time within seed-treatment treatment. All germination patterns were significantly fitted by a S-shaped (sigmoidal) distribution function with the general equation y=β+α/(1+exp(-(x-μ)/s)). Treatment with sulphuric acid significantly increased the final germination in comparison to untreated control. No differences were observed in % germination among the other seed treatments. Seed treatments increased by three to seven fold the maximum germination rate and reduced by 26% the mean germination time in comparison to untreated control. The reduction in mean germination time, and the increase in percentage germination and germination rate may have economical implication in the production of dwarf palm and its involvement in environmental restoration strategies, with no need to use dangerous or expensive acid pre-treatment in order to increase the propagation success
Micropropagation of Salvia wagneriana Polak and hairy root cultures with rosmarinic acid production
Full text linkSalvia wagneriana Polak is a tropical species native to Central America, well adapted to grow in the Mediterranean basin for garden decoration. Micropropagation has been assessed from axillary shoots of adult plants using a Murashige and Skoog basal medium, with the addition of 1.33-μM 6-benzylaminopurine for shoot proliferation; the subsequent rooting phase occurred in plant growth regulator-free medium. The plants were successfully acclimatised with high survival frequency. Hairy roots were induced after co-cultivation of leaf lamina and petiole fragments with Agrobacterium rhizogenes and confirmed by PCR. The establishment and proliferation of the selected HRD3 line were obtained in hormone-free liquid medium and the production of rosmarinic acid (RA) was evaluated after elicitation. The analysis of RA was performed by LC-ESI-DAD-MS in the hydroalcoholic extracts. The addition of casein hydrolysate increased the RA production, whereas no enrichment was observed after the elicitation with jasmonic acid
In Vitro morphogenesis and micropropagation of Anemone coronaria L. hybrids.
No full textAmong the species of the genus Anemone, A. coronaria L. is one of the most widely grown for cut flower production. As the homogeneity of F, seed population is still a problem, a study on the possibility of establishing a reliable system of in vitro multiplication of parental plants has been carried out. Seeds and immature flowers were used as explants. Multiplication phase was established using the cytokinin 2iP (9.84 mu M) which increased both the multiplication rate and the fresh weight of the clusters. The rooting phase was studied by evaluating root development and the tuber enlargement. The rooting medium, containing 2.85 mu M IAA and 2.43 mu M IBA, allowed root emission and the increase of the tuber size during the four months of culture. After the acclimatization trials it was possible to identify a tuber weight threshold (500 mg) above which the acclimatization was good. The plants coming from in vitro culture grew normally. No phenotypic variants were noted and the quality of the flowers was comparable to the commercial standard
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