Physiological and morphological responses of cotton (Gossypium herbaceum L.) under different water regimes
نویسندگان
چکیده
The cotton (Gossypium herbaceum L.) was analyzed for changes in physiological and morphological parameters under the influence of water stress. The deleterious effect of water stress i.e., drought in cotton plants was mainly targeted towards physiological and morphological characteristics. The gas-exchange parameters of net photosynthesis (P N ), stomatal conductance (g s ), electron transport rates (ETR), sub-stomatal CO 2 concentration (C i ) and the maximum quantum efficiency of PS II (F v /F m ) showed a decreasing trend as the drought intensity increased. But considerable increase in osmotic potential (Ψ) was reported. The growth parameter viz., shoot length, root length, leaf area expansion and leaf number showed significant decrease on increase in drought intensity. But the comparative analysis revealed that G. herbaceum is torerance towards drought.
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