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Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

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Table 4. The significance of differences in the ratio aspartic acid / serine of leaf vine varieties of Galben de OdobetisortogroupThe vine variety Galben de Odobeti Zghihar de Hui Btut neagr Negru moale Negru vârtosGalben de Odobeti 0 Zghihar de Hui 0.11292 0 Btut neagr 0.23710 0.00732 0 Negru moale 0.08869 0.93531 0.00357 0 Negru vârtos 0.06510 0.44839 0.00510 0.39683 0CONCLUSIONSThe total free amino acids content in leavesvaries between 18.76 g/mg fresh leaf tissue tothe variety Galben de Odobeti and 14.33g/mg to the variety Negru moale, withintermediate values for the variety Negruvârtos (17.74 g/mg), (cv) Btut neagr(15.20 g/mg) and (cv) Zghihar de Hui(14.54 g/mg).The most abundant of the free amino acids inleaves of native varieties to Galben deOdobeti sortogroup are: Asp. Ser. Thr. Glu.Pro. Arg and Gly. Aspartic acid is found inlarge amounts compared with other aminoacids predominant.The ratio proline/arginine has differentiatedstatistically the variety Btut neagr by theother varieties of Galben de Odobetisortogroup with a confidence interval of 95%.Significant difference exists between thevarieties Galben de Odobeti and Negruvârtos and between the varieties Negru moaleand Negru vârtos.The ratio between predominant amino acids(aspartic acid/serine) has differentiatedgenetically the variety Btut neagr by theother varieties (except the variety Galben deOdobeti) with a confidence interval of 95%.There is significant difference between thevarieties Galben de Odobeti and Negruvârtos and between the varieties Negru moaleand Negru vârtos.The amino acid profile of leaves can be used asdiscriminant analysis method of vine varietiesto Galben de Odobeti sortogroup. with theother modern methods of investigation(isoenzyme analysis and DNA analysis).ACKNOWLEDGEMENTSThe authors are grateful Mr. Ass. Prof.Gheorge Stoian, Ph.D., in the Department ofBiochemistry and Molecular Biology,University of Bucharest, Faculty of Biology,for their help in working with TLC.REFERENCESBieleski R.L.. Turner N.A., 1966. Separation andestimation of amino acids in crude plant extracts bythin-layer electrophoresis andchromatography. Anal. Biochem., p. 278–293.Hernández-Orte P., Guitart Ana, Cacho J., 1999.Changes in the Concentration of Amino AcidsDuring the Ripening of Vitis vinifera TempranilloVariety from the Denomination d'Origine Somontano(Spain). Am. J. Enol. Vitic. 50:2, p. 144-154.Huang Z., Ough C. S., 1991. Amino Acid Profiles ofCommercial Grape Juices and Wines. Am. J. Enol.Vitic. 42:3, p. 261-267.Kliewer W.M., 1967. Annual cyclic changes in theconcentration of free aminoacids in grapevine. Am. J.Enol. Vitic. 18., p. 126–137.Shiraischi Mikio, 1996. Proposed BiochemicalDescriptors for Amino Acids to Evaluate GrapeGermoplasm, J. Japan. Soc. Hort. Sci. 65(2), p. 283-289.ârdea C., 2007. Chimia si analiza vinului, Ed. “IonIonescu de la Brad, p. 754-770.168

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