کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6377281 | 1624860 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seedling emergence, growth, and leaf mineral nutrition of Ricinus communis L. cultivars irrigated with saline solution
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two greenhouse experiments were conducted to evaluate the salt tolerance of five cultivars ('Brigham', 'Energia', 'Hale', 'Memphis', and 'Ultra dwarf') and one hybrid ('HCastor') of castor (Ricinus communis L.) by germinating seeds in saline substrate and irrigating plants with saline solutions. Seeds were sown in substrate that was moistened with reverse osmosis water [Electrical conductivity (EC)Â =Â 0.02Â dSÂ mâ1, control), wastewater (ECÂ =Â 1.9Â dSÂ mâ1), or saline solution (ECÂ =Â 10.3 or 17.5Â dSÂ mâ1). Both wastewater at EC of 1.9Â dSÂ mâ1 and saline solution at EC of 10.3Â dSÂ mâ1 increased the seedling emergence of 'Brigham', 'Hale', and 'Memphis', but decreased that of 'HCastor' and 'Ultra dwarf'. Saline solution at EC of 17.5Â dSÂ mâ1 significantly inhibited seedling emergence of all cultivars, except 'Memphis'. The results indicated that 'Memphis' was the most tolerant cultivar, and 'Brigham', 'Hale', 'HCastor', 'Energia', and 'Ultra dwarf' were less tolerant to salinity stress. In the 2nd experiment, plants were irrigated with nutrient solution (no addition of salts, control) or saline solution at EC of 10Â dSÂ mâ1 for 69 days. All plants irrigated with saline solution were shorter than those irrigated with nutrient solution. The reduction in height was 40%, 39%, 44%, 38%, 51%, and 50%, respectively, for 'Memphis', 'Brigham', 'HCastor', 'Ultra dwarf', 'Energia', and 'Hale', compared to their respective controls. The fruit dry weight (DW) of 'Brigham', 'HCastor', 'Ultra dwarf', and 'Hale' irrigated with saline solution was significantly reduced by 65%, 66%, 60%, and 78%, respectively. Although a reduction of 57% and 55% in the fruit DW was recorded for 'Energia' and 'Memphis', respectively, there was no significance between saline solution and nutrient solution. Total DW of the plants irrigated with saline solution decreased by 60% for 'Memphis' and 70-78% for other cultivars as compared with those irrigated with nutrient solution. Salt treatment significantly increased leaf Na+, Ca2+, and Clâ concentrations, while decreased K+ concentration. However, leaf Na+ and Clâ concentrations were relatively low compared to other salt sensitive crops. Based on the results from both experiments, 'Memphis' was more tolerant to salinity than other cultivars.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 49, August 2013, Pages 75-80
Journal: Industrial Crops and Products - Volume 49, August 2013, Pages 75-80
نویسندگان
Youping Sun, Genhua Niu, Pedro Osuna, Girisha Ganjegunte, Dick Auld, Lijuan Zhao, Jose R. Peralta-Videa, Jorge L. Gardea-Torresdey,