INITIAL SPROUT GROWTH OF POTATO SEED MINITUBERS UNDER SALT STRESS
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https://doi.org/10.32404/rean.v3i1.741Abstract
Potato (Solanum tuberosum L.) is a major crop worldwide and the tuber yield of currently used cultivars is strongly reduced at high soil salt levels. The effects of salt stress on early sprout growth of potato plants were investigated using the cultivar Ágata. Potato seed minitubers were planted in 0.4 L pots filled with commercial substrate (Bioplant®), and maintained under greenhouse conditions. A completely randomized design with five treatments and five replications was used. Three days after sprouting, potato plants were exposed to five salinity levels [0 (control), 25, 50, 75 and 100 mmol L–1 of NaCl] for 28 days. Results showed that the exposure of plants to 100 mmol L–1 NaCl reduced the shoot height (72%), shoot dry matter (76%) and root dry matter (75%) of potato plants compared to the NaCl-free control. The length of longest roots was not affected by salinity levels, indicating that inhibition of shoot growth is more severe that of the root. The exposure to high salt concentrations severely restricted the early sprout growth of potato plants. Results of this study stated that salt-stress is a constraint on potato production, and the use of cultivars tolerant to salt stress can be a strategy to achieve high levels of potato tuber yield under salinity conditions.
References
(1) BOUSLAMA, M. SCHAPAUGH, W. T. Stress tolerance in soybean. Part. 1: Evaluation of three screening techniques for heat and drought tolerance. Crop Science, Madison-USA, v. 24, n. 5, p. 933-937, 1984.
(2) CHAVES, L. C. G.; ANDRADE, E. M.; CRISOSTOMO, L. A.; NESS, R. L. L.; LOPES, J. F. B. Risk of degradation in irrigated soil at the distrito de irrigação do perímetro Araras Norte, Ceará, Brazil. Revista de Ciências Agronômicas, Natal-CE, v. 37, n. 3, p. 293-299, 2006.
(3) DELFINE, S.; ALVINO, A.; VILLANI, M. C.; LORETO, F. Restrictions to carbon dioxide conductance and photosynthesis in spinach leaves recovering from salt stress. Plant Physiology, Rockville-USA, v. 119, p. 1101-1106, 1999.
(4) DOLATABADIAN, A.; MODARRESSANAVY, S. A. M.; GHANATI, F. Effect of salinity on growth, xylem structure and anatomical characteristics of soybean. Notulae Scientia Biologicae, Romania-RO, v. 3, p. 41–45, 2011.
(5) FEIJÃO, A.R.; SILVA, J.C.B.; MARQUES, E.C.; PRISCO, J.T.; GOMES-FILHO, E. Efeito da nutrição de nitrato na tolerância de plantas de sorgo sudão à salinidade. Revista Ciência Agronômica, Natal-CE, v. 42, n. 3, p. 675-683, 2011.
(6) FRICKE, W.; AKHIYAROVA, G.; WEI, W.X.; ALEXANDERSSON, E.; MILLER, A.; KJELLBON, P.O.; RICHARDSON, A.; WOJCIECHOWSKI, T.; SCHEIBER, L.; VESELOV, D.; KUDOYAROVA, G.; VOLKOV, V. The short-term growth response to salt of the developing barley leaf. Journal of Experimental Botany, Oxford-UK, v. 57, n. 6, p. 1079-1095, 2006.
(7) GHOSH, S. C.; ASANUMA, K.; KUSUTANI, A.; TOYOTA, M. Effect of salt stress on some chemical components and yield of potato. Soil Science and Plant Nutrition, Tokio-JP, v. 47, n. 3, p. 467-475, 2001.
(8) MASS, E. V. Salt tolerance of plants. Applied Agricultural Research, Okla-MY, v. 1, n. 1, p.12-26, 1986
(9) MUNNS, R. Comparative physiology of salt and water stress. Plant, Cell and Environment, Malden-USA, v. 25, n. 2, p. 239-250, 2002.
(10) MUNNS, R.; TESTER, M. Mechanisms of salinity tolerance. Annual Review of Plant Biology, Palo Alto-USA, v. 59, n. 7, p. 651-681, 2008.
(11) PARIDA, A.K.; DAS, A.B. Salt tolerance and salinity effects on plants: a review. Ecotoxicology and Environmental Safety, New York-USA, v. 60, n. 6, p. 324-349, 2005.
(12) RICHARDS, L.A. Diagnosis and improvement of saline and alkali soils. Washington DC: United States Department of Agriculture. 1954. 160p. (Handbook no. 60).
(13) ZHU, J. K. Plant salt tolerance. Trends in Plant Science, Oxford-UK, v. 6, n. 2, p. 66-71, 2001.
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