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۱Response of Growth and Chemical Constituents in Khaya sengalensis to Salinity and Gypsum under Calcareous Soil Conditions
اطلاعات انتشار: World Applied Sciences Journal، بيست و دوم،شماره۴، ۲۰۱۳، سال
تعداد صفحات: ۶
A pot experiments were conducted during 2010–2011 seasons at the greenhouse in Nubaria farm as well as laboratories of National Research Centre, Dokki, Giza, Egypt. The aim of this work is to study the effect of salinity levels and different rates of gypsum on vegetative growth and chemical constituents of Khaya sengalensis grown under calcareous soil conditions. Results showed that, increasing salinity levels significantly gradually decreased plant height, stem diameter, number of leaves\plant, root length and fresh and dry weight of leaves and shoots. The same behavior was noticed concerning chlorophyll a, b and carotenoids as well as N, P and K percentage in shoots. On the contrary, proline content as well as calcium and sodium percentage was increased with increasing salinity levels. On the other hand, all previous growth parameters and chemical constituents tended to increase with increasing gypsum rates, except the proline content and Na % tended to decrease with increasing gypsum rates. These applications may be recommended that for overcoming the harmful effect on growth and chemical constituents of Khaya sengalensis seedlings under salinity levels.
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