Changes in response to drought stress of triticale and maize genotypes differing in drought tolerance |
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| Authors: | M. T. Grzesiak A. Rzepka T. Hura K. Hura A. Skoczowski |
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| Affiliation: | (1) The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, 21 Niezapominajek str., PL 30-239 Cracow, Poland;(2) Department of Plant Physiology, Institute of Biology, Pedagogical Academy, 2 Podbrzezie str., PL 30 054 Cracow, Poland;(3) Department of Plant Physiology, Cracow Agricultural University, 21 Av. A. Mickiewicza, PL 31 120 Cracow, Poland |
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| Abstract: | 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. |
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| Keywords: | dry matter partioning shoot to root ratio species differences water potential Zea |
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