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Directory of Open Access Journals Sweden. Schott is widely distributed in tropical and sub-tropical areas. However, its origin, diversification and dispersal remain unclear. While taro genetic diversity has been documented at the country and regional levels in Asia and the Pacific, few reports are available from Americas and Africa where it has been introduced through human migrations. We used eleven microsatellite markers to investigate the diversity and diversification of taro accessions from nineteen countries in Asia, the Pacific, Africa and America.
The highest genetic diversity and number of private alleles were observed in Asian accessions, mainly from India. While taro has been diversified in Asia and the Pacific mostly via sexual reproduction, clonal reproduction with mutation appeared predominant in African and American countries investigated.
Bayesian clustering revealed a first genetic group of diploids from the Asia-Pacific region and to a second diploid-triploid group mainly from India. Admixed cultivars between the two genetic pools were also found. In West Africa, most cultivars were found to have originated from India.
Only one multi-locus lineage was assigned to the Asian pool, while cultivars in Madagascar originated from India and Indonesia. The South African cultivars shared lineages with Japan.
The Caribbean Islands cultivars were found to have originated from the Pacific, while in Costa Rica they were from India or admixed between Indian and Asian groups. Taro dispersal in the different areas of Africa and America is thus discussed in the light of available records of voyages and settlements.
Evaluation of performance of rice Oryza sativa and taro Colocasia esculenta in a mixed cropping system. Taro Colocasia esculenta L Schott var. In Ghana, its cultivation is limited to river basins or banks in large cities. However, a few farmers grow it on a large scale and rank it as their main source of income. Genetic Improvement of Taro Colocasia esculenta var esculenta Indo-Malaysian region, probably in Eastern India and Bangladesh. Cultivated types of taro are mostly China supplies most of the imports to Japan.
Genetic diversity of taroColocasia esculenta L. Schott, in Southeast Asia and the Pacific. Three AFLP primer combinations generated a total of scorable amplification products. The accessions were. Improvement of taro Colocasia esculenta var esculenta through in-vitro mutagenesis.
An in-vitro mutation breeding program was implemented to improve taro Colocasia esculenta L. Apical shoot tips used as explants were cultured on Murashige and Skoog medium supplemented with varying concentrations of Indole acetic acid, Thidiazuron 1-Phenyl 1,2,3- thiadiazolyl urea TDZ and N6-benzylaminopurine BA. For RAPD analysis, eight 10 mer random primers were selected as they amplified more than 5 polymorphic bands. Both morphological and molecular analysis revealed low genetic diversity among germplasm accessions.
Rapid primers screened will be useful for characterization of mutant line showing resistance to leaf blight and the micropropagation methodology developed will be useful for rapid multiplication of mutants. An in vitro mutation programme was implemented to improve taro Colocasia esculenta L. Apical shoot tips used as explants were cultured on Murashige and Skoog medium with varying concentrations of Indole acetic acid, Thidiazuron 1-Phenyl 1,2,3-thiadiazolyl urea TDZ and N6-benzylaminopurine BA.
Nine accessions of colocasia species dasheen and eddoes type and two from Xanthosoma species were used for morphological and molecular characterization. For RAPD analysis, eight mer random primers were selected as they amplified more than five polymorphic bands. RAPD primers screened will be useful for characterization of mutant lines showing resistance to leaf blight while the micropropagation methodology developed will be useful for rapid multiplication of mutants.
Characterisation of taro Colocasia esculenta based on morphological and isozymic patterns markers. Characterization of taro Colocasia esculenta based on morphological and isozymic patterns markers. The aims of this research were to find out: Survey research conducted in the Karanganyar district, which include high, medium and low altitude.
The sample was taken using random purposive sampling technique, including 9 sampling points. The morphological data was elaborated descriptively and then made dendogram. The data on isozymic banding pattern was analyzed quantitatively based on the presence or absence of bands appeared on the gel, and then made dendogram.
The correlation based on the morphological characteristics and isozymic banding pattern were analyzed based on the product-moment correlation coefficient with goodness of fit criterion.
Flowering of taro germplasm Colocasia esculenta L. Sampling was made every 7 days in the period to evaluate inflorescence; accessions were characterized according to flowering parameters.
Increased temperature and relative humidity lasted until November, when inflorescence ends. Using Citrus aurantifolia essential oil for the potential biocontrol of Colocasia esculenta taro leaf blight caused by Phytophthora colocasiae.
The aim of this work was to evaluate the antimicrobial activities of leaves and epicarp of Citrus aurantifolia essential oil against Phytophthora colocasiaethe causative agent of taro leaf blight.
Oils were extracted by hydrodistillation, and their chemical composition was determined by gas chromatography and gas chromatography coupled with mass spectrometry.
Antimicrobial activities of oils were tested in vitro against mycelium growth and sporangium production. In situ tests were done on healthy taro leaves, and the necrosis symptoms were evaluated. Results showed that the essential oil extraction yields from leaves and epicarp were 0.
The highest inhibitory concentration of sporangium production was There were positive correlations between both the oil concentration and the reduction of necrosis caused by P. These findings suggest that the C. Victoria basin that covers three countries: Genetic structure and diversity of East African taro [ Colocasia Taro [ Colocasia esculenta L Schott] is mainly produced in Africa by small holder farmers and plays an important role in the livelihood of millions of poor people in less developed countries.
The genetic diversity of East African taro has not been determined. This study utilizes six microsatellite primers to analyze five Taro leaf Colocasia esculenta has the potential to be used as a corrosion inhibitor because it has a substance called polyphenol that binds to the hydroxyl group and essential amino acids.
Taro leaf extract is taken by maceration method. Based on the results revealed that there is a phenolic group in taro leaves, which has polyphenol content 0. The optimum composition of taro leaf extract is ppm which generate corrosion rate value of In this study, the Kads value of taro leaf extract ranged from 0.
The high Kads values indicate a more efficient process of adsorption and better value of inhibition efficiency. O experimento foi conduzido a campo, de outubro de a junho de Preliminary phytochemical screening and alpha-glucosidase inhibitory activity of Philippine taro Colocasia esculenta L.
The crude extracts were screened for the presence of alkaloids, flavonoids, glycosides and saponins using Thin Layer Chromatography.
The results of the phytochemical screening revealed the presence of alkaloids, flavonoids, and saponins in the leaf part while flavonoids and saponins were detected in the petiole and only saponins were present in the corm.
It can be concluded that the gwston crude extracts of the different parts of C. Produktivitas Talas Colocasia esculenta L.
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Shott is a functional food plant. Based on Permenhut P. According to the knowledge of local people, the agroforestry of taro has been applied on dry land of private forest. The objective of this research was to evaluate the growth and productivity of taro under three tree species of the private forest using agroforestry system. Survey and field observation were conducted in this research.
Growth and production of taro plants were measured, including height growth, number of leaves, wet and dry weight of leaves and stems. Wet and dry weight of tuber were recorded to calculate the taro production. Tree species showed significant effects on growth and production of taro plant in agroforestry system. The highest biomass of taro The light intensity under jabon tree in agroforestry system was The highest production of wet and dry weight of taro tuber were 2, Mineral uptake by taro colocasla esculenta in swamp agroecosystem following gramoxone paraquat herbicide spraying.
Mineral elemental uptake by Colocasia esculenta growing in swamp agroecosystem was studied following 14, 18 or 28 months of field spraying MAT, months after treatment with herbicide Gramoxone paraquat. In overall, Al Concentration of macronutrient K In Guadeloupe, smallholder farmers traditionally cultivate flooded taro Colocasia esculenta cultures under the canopy of P.
An in-depth characterization of root-associated AM fungal communities from P. The AM fungal fl was composed of operational taxonomic units OTUsbelonging to eight fungal families dominated by Glomeraceae, Acaulosporaceae, and Gigasporaceae. Results revealed a low AM fungal community membership between P. These findings provide new perspectives in deciphering the significance of Funneliformis in nutrient exchange between P.
Effect of the planting material on the incidence of dry rot in Colocasia esculenta L. Schott and Xanthosoma spp.
Full Text Available The cocoyam Xanthosoma spp. This work was developed with the aim of determining the effect of the planting material type on the incidence of dry rot in two cultivars of Colocasia gadton Xanthosoma genera.
Primary and secondary rhizomes, crowns of primary rhizomes and in vitro plants were used.