Influence of selenium in drought-stressed wheat plants under greenhouse and field conditions



Effects of selenium (Na2SeO4) was studied in two wheat genotypes under well-watered and drought conditions in greenhouse (15 µg Se L-1) and field (20-60 60 g ha-1) experiments. Application of Se improved dry matter and grain yield under both well-watered and drought conditions. Se increased leaf concentration of pigments and photosynthesis rate under both well-watered and drought conditions. Our results indicated that Se alleviates drought stress via increased photosynthesis rate, protection of leaf photochemical events, accumulation of organic osmolytes and improvement of water use efficiency. Under well-watered condition, Se-mediated growth improvement was associated with higher photosynthesis rate and water use efficiency, greater root length and diameter, and higher leaf water content.


drought stress; drought; photosynthesis; slenium; water supply; wheats; organic compounds; pigments; field experimentation; protected cultivation

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