Photosynthetica 2007, 45(2):280-287 | DOI: 10.1007/s11099-007-0045-x

Changes in response to drought stress of triticale and maize genotypes differing in drought tolerance

M. T. Grzesiak1,*, A. Rzepka2, T. Hura1, K. Hura3, A. Skoczowski1
1 The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Cracow, Poland
2 Department of Plant Physiology, Institute of Biology, Pedagogical Academy, Cracow, Poland
3 Department of Plant Physiology, Cracow Agricultural University, Cracow, Poland

Direct effects and after-effects of soil drought for 7 and 14 d were examined on seedling dry matter, leaf water potential (ψ), leaf injury index (LI), and chlorophyll (Chl) content of drought (D) resistant and sensitive triticale and maize genotypes. D caused higher decrease in number of developed leaves and dry matter of shoots and roots in the sensitive genotypes than in the resistant ones. Soil D caused lower decrease of ψ in the triticale than maize leaves. Influence of D on the Chl b content was considerably lower than on the Chl a content. In triticale the most harmful D impact was observed for physiologically younger leaves, in maize for the older ones. A period of 7-d-long recovery was too short for a complete removal of an adverse influence of D.

Additional key words: dry matter partioning; shoot to root ratio; species differences; water potential; Zea

Received: July 17, 2006; Accepted: October 27, 2006; Published: June 1, 2007  Show citation

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Grzesiak, M.T., Rzepka, A., Hura, T., Hura, K., & Skoczowski, A. (2007). Changes in response to drought stress of triticale and maize genotypes differing in drought tolerance. Photosynthetica45(2), 280-287. doi: 10.1007/s11099-007-0045-x
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