Specific Gravity, Dry Matter Content, and Starch Content of Potato (Solanum tuberosum L.) Varieties Cultivated in Eastern Ethiopia
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Abstract: Several farmers’ and improved potato varieties are cultivated by farmers in the eastern highlands of Ethiopia. However, sufficient information is not available on tuber quality characteristics of the potato varieties. Therefore, experiments were conducted at three locations in the region, namely, Haramaya, Hirna and Arbarakatte in eastern Ethiopia during the 2012 to 2014 main cropping season to elucidate the internal tuber quality characteristics of 17 potato varieties and prepare a specific gravity conversion chart. The treatments consisted of 17 potato varieties (Araarsaa, Badhasa, Belete, Batte, Bubu, Bulle, Chala, Chiro, Gabbisa, Gera, Gorebela, Gudanie, Guasa, Jalenie, Jarso, Mara Charre and Zemen). The experiment at location was laid out as a randomized complete block design and replicated three times per treatment. The results revealed that tuber specific gravity (SG), dry matter (DM) and starch contents (SC) were significantly influenced by variety, location and year, while the interaction of the three factors significantly influenced SG and SC. All improved cultivars produced tubers with >1.085, >21% and > 14% of SG, DM and SC, respectively, and were found to be suitable for making French fries, chips and flakes. However, tubers of the local varieties had <1.07 gcm2, < 20% and < 11% SG, DM and SC, respectively, and were found to be suitable for making whole boiled potatoes. The dendrogram constructed using Unweighted Pair-group Method with Arithmetic means separated the varieties into three clusters of which Cluster I with distinct Sub-group I consisted of eight improved varieties (Ararsa, Bule, Marachere, Badhasa, Challa, Jalanine, Gabisa and Zemen) and Sub-group II six improved cultivars (Bubu, Gera, Gorbella, Gudenine, Gusa and Chiro) , and Clusters II and III consisted of one improved variety (Belete) and two farmers’ varieties (Batte and Jarso), respectively. The varieties found to be suitable for making processed potato products (French fries, etc) were grouped in the Sub-group I as they produced tubers with SG, DM and SC contents of acceptable standard for making such products while cultivars in Sub-group II and Belete (Cluster II) produced tubers with high SG, DM and SC contents that may produce too hard, dry and brittle French fries and chips. The correlation of specific gravity with dry matter and starch contents being perfect or near to perfect (r=0.962 to 1) across locations and seasons with high coefficient of determination (R2=0.924 to 0.999). It could, thus, be concluded that it is appropriate to use specific gravity and the conversion chart produced from this tuber quality trait to estimate the other two traits (dry matter and starch contents) and determine the quality of tubers for processing.
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Keywords:Â Coefficient of determination; Conversion chart; Correlation; Internal tuber quality.Â
Anderson, P., Barker, I., Best, S., Bonierbale, M., Crissman, C., Hareau, G. and Velarde, C. L. 2010. Importance of Roots and Tubers in the World Food System; Digging up the Evidence. Unpublished working document, Lima, Peru.
AOAC (Association of Official Analytical Chemists). 1980. Official Methods of Analysis. Gaithersburg, Md.
Baye, B. and Gebremedhin, W. 2013. Potato research and development in Ethiopia achievements and trends. pp. 35-38, In: Gebremedhin, W., Schulz, S. and Baye, B. (Eds.) Seed Potato Tuber Production and Dissemination: Experiences, Challenges and Prospects. Proceedings of the National Workshop on Seed Potato Tuber Production and Dissemination, 12-14 March 2012, Bahir Dar, Ethiopia.
Belay, S. C., Wortman, W. and Hoogen, G. 1998. Haricot bean agro-ecology in Ethiopia: definition using agro-climatic and crop growth stimulation models. Africa Crop Science Journal, 6: 9-18.
Binner, S., Jardine, W.G., Renard, C.M.C.G. and Jarvis, M.C. 2000. Cell wall modifications during cooking of potatoes and sweet potatoes. Journal of the Science of Food and Agriculture, 80: 216-218.
Cordain, L. 2005. Origins and evolution of the Western diet. American Journal of Clinical Nutrition, 81: 341-354.
CSA (Central Statistical Agency). 2014. Agricultural Sample Survey, Area and Production of Major Crops, Statistical Bulletin, No. 532, Addis Ababa.
Dale, M. F. B. and Mackay, G. R. 1994. Inheritance of table and processing quality. pp. 285-315, In: Bradshaw, J. E. and Mackay, G. R. (Eds.) Potato Genetics. CAB International, Wallingford, Oxon, UK.
DEPI (Department of Environment and Primary Industries). 1995. Potatoes: Factors affecting dry matter, Table for a ready reckoner for estimating dry matter (DM). Spring Street Melbourne, Victoria. ISSN 1329-8062, Note Number: AG0323, Published: April 1995, Updated: August 2010.
Dinesh, K., Ezekiel, R., Singh, B. and Ahmed, I. 2005. Conversion table for specific gravity dry matter and starch content from under water weight of potatoes grown in North India plains. Potato Journal, 32 (1-2): 79-84.
Dorota, D., Rafal, Z., Mieczyslaw, N. and Renata, S. 2011. Characterization of five potato cultivars according to their nutritional and pro-health components. Acta Scientiarum Polonorum. Technologia Alimentaria, 10 (1): 73-80.
Elfnesh, F., Tekalign, T. and Solomon, W. 2011. Processing quality of improved potato (Solanum tuberosum L.) cultivars as influenced by growing environment and blanching. African Journal of Food Science, 5 (6): 324-332.
Esendal, E. 1990. Potato. University of Ondokuz Mayis, Faculty of Agriculture, No: 49. ISBN: 975-7636-06-1, Samsun, Turkey, p 221.
Ezekiel, R., Singh, B. and Gopal, J. 2003. Relationship between under water weight and specific gravity, dry matter and starch content of potatoes grown in India. Journal of Indian Potato Association, 30: 233-39.
FAO (Food and Agriculture Organization). 2013. FAOSTAT Database on Agriculture. http://faostat.fao.org/ (Accessed 17-11-2013).
Fitzpatrick, J.J., Porter, W.L. and Houghland, V.C. 1969. Continued studies of the relationship of specific gravity to total solids of potato. American Potato Journal, 46: 120-127.
Freitas, S. T., Pereira, E. I. P. and Gomez, A. C. S. 2012. Processing quality of potato tubers produced during autumn and spring and stored at different temperatures. Horticultura Brasileira, 30: 91-98.
Hassanpanah, D., Hassanabadi, H. and Azizi Chakherchaman, S. H. 2011. Evaluation of cooking quality characteristics of advanced clones and potato cultivars. American Journal of Food Technology, 6: 72-79.
Hassel, R. L., Kelly, D. M., Wittmeyer, E. C., Wallace, C., Grassbaugh, E. M., Elliott, J. Y. and Wenneker, G. L. 1997. Ohio potato cultivar trials. Ohio State University Horticulture Series No. 666.
Henry, C. J. K., Lightowler, H. J., Strik, C. M. and Storey, M. 2005. Glycaemic index values for commercially available potatoes in Great Britain. British Journal of Nutrition, 94: 917-921.
Hogy, P. and Fangmeier, A. 2009. Atmospheric CO2 enrichment affects potatoes: Tuber quality traits. European Journal of Agronomy, 30: 85-94.
Houghland, G. V. C. 1966. New conversion table for specific gravity, dry matter and starch in potatoes. American Potato Journal, 43: 138-143.
HURC (Haramaya University Research Centre), 1996. Proceedings of the 13th annual Research and extension review meeting. pp. 26-28.
Ismail, A., Abu, Z. and Wael, A. M. 2015. Growth and productivity of different potato varieties under Gaza Strip conditions. International Journal of Agriculture and Crop Sciences. Available online at www.ijagcs.comIJACS/2015/8-3/433-437.ISSN 2227-670X.
Jenkins, D. J. A., Wolever, T. M. S., Taylor, R. H., Barker, H., Fielden, H., Baldwin, J. M., Bowling, A. C., Newman, H. C., Jenkins, A. L. and Goff, D. V. 1981. Glycemic index of foods: a physiological basis for carbohydrate exchange. The American Journal of Clinical Nutrition, 34: 362-366.
Johanson, R. H., Miller, J. C., Newsom, D. W. and Fontenot, F. J. 1967. The influence of environment on specific gravity, plant maturity and vigor of potato. American Potato Journal, 41: 107-122.
Johnson, S. B., Olsen, N., Rosen, C. and Spooner, D.M. 2010. Commercial potato production in North America. American Journal of Potato Research, 87: 1-90.
Kabira, J. N. and Lemaga, B. 2006. Potato processing: Quality evaluation procedures for research and food industries applications in East and Central Africa. Kenya Agriculture Research Publication, p. 10.
Kaur, S. and Aggarwal, P. 2014. Studies on Indian potato genotypes for their processing and nutritional quality attributes. International Journal of Current Microbiology Applied Sciences, 3 (8): 172-177.
Kirkman, M. A. 2007. Global Markets for Processed Potato Products. pp. 27-44, In: Vreugdenhil, D. (Ed.) Potato Biology and Biotechnology Advances and Perspectives. Elsevier, Oxford.
Kleinkopf, G. E., Westermann, D. T., Wille, M. J. and Kleinschmidt, G. D. 1987. Specific gravity of Russet Burbank potatoes. American Potato Journal, 64: 579–587.
Liu, Q., Weber, E., Currie, V. and Yada, R. 2003. Physicochemical properties of starches during potato growth. Carbohydrate Polymerase Journal, 5: 213-221.
Lulai, E. C. and Orr, P. H. 1980. Quality testing facilities for grower use at the Potato Research Laboratory. American Potato Journal, 57: 622-628.
MoA (Ministry of Agriculture). 2013. Plant Variety Release, Protection and Seed Quality Control Directorate, Crop Variety Register Issue No.1 6, pp.161-164. , Addis Abeba, Ethiopia.
Mozaffarian, D., Tao, H., Eric, B. R., Walter C.W. and Frank, B. H. 2011. Changes in diet and lifestyle and long-term weight gain in women and men. Nutrition England Journal of Medicine, 364: 2392-2404.
NIVAA (The Netherlands Consultative Potato Institute). 2002. On the road to potato processing comprehensively revised and updated second edition in 2002. Postbus 17337 2502 CH Den Haag, The Netherlands.
Parada, J. and Aguilera, J.M. 2009. In vitro digestibility and glycemic response of potato starch is related to granule size and degree of gelatinization. Journal of Food Science 74 (1):34-38.
Rommens, C. M., Shakya, R., Heap, M. and Fessenden, K. 2010. Tastier and healthier alternatives to French Fries. Journal of Food Science, 75: 109-115.
Schafer-Pregl, R., Ritter, E., Concilio, L., Hesselbach, J., Lovatti, L., Walkemeier, B., Thelen, H., Salamini, F. and Gebhardt, C. 1998. Analysis of quantitative trait loci (QTLs) and quantitative trait alleles (QTAs) for potato tuber yield and starch content. Theoretical and Applied Genetics, 97 (6): 834-846.
Sneath, P. H. and Sokal, R. R. 1973. Numerical Taxonomy. Freeman and Company, San Francisco, USA.
Tekalign, T. 2011.Genotype x environmental interaction for tuber yield, dry matter content and specific gravity in elite tetraploid potato (Solanum tuberosum L.) genotypes. East Africa Journal of Sciences, 5 (1): 1-5.
Tekalign, T., Hammes, P. S. 2005. Growth and productivity of potato as influenced by cultivar and reproductive growth: II. Growth analysis, tuber yield and quality. Science Horticulture, 105: 29-44.
Tesfaye, A., Shermarl, W. and Thunya, T. 2013. Evaluation of specific gravity of potato varieties in Ethiopia as a criterion for determining processing quality. Kasetsart Journal, 47: 30- 41.
USDA (United States Department of Agriculture). 1997. United States Standards for Grades of Potatoes for Processing. U.S. Department of Agriculture, South Building, Washington, DC 20250, pp. 7-8.
Vakis, N. J. 1978. Specific gravity, dry matter content and starch content of 50 potato cultivars grown under Cyprus conditions. Potato Research, 21: 171-181.
Van Eck, H. J. 2007. Genetics of morphological and tuber traits. pp. 91-115, In: Vreugdenhil, D., Bradshaw, J., Gebhardt, C., Govers, F., Taylor, M. A., MacKerron, D. K. and Ross, H. A. (Eds.) Potato Biology and Biotechnology: Advances and Perspectives. Elsevier, London.
Verma, S. C., Joshi, K. C., Sharma, T. R. and Malhotra, V.P. 1972. Relation between specific gravity and dry matter content of potato (Solanum tuberosum L.). Indian Journal of Agriculture Science, 42: 709-12.
Wilson, J. H. and Lindsay, A. N. 1969. The relation between specific gravity and dry matter content of potato tubers. American Potato Journal, 46: 323-328.
William, M. A. and Woodbury, G. W. 1968. Specific gravity dry matter relationship and reducing sugar change affected by potato variety, production area and storage. American potato Journal, 45 (4): 119-131.
Yildrim, Z. and Tokusoglu, Ö. 2005. Some analytical quality characteristics of potato (Solanum tuberosum L.) Minitubers (cv.nif) developed via in -vitro cultivation. Electronic Journal, Environment Agriculture and Food Chemistry, ISSN: 1579-4377.
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