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2010 | 32 | 2 |
Tytuł artykułu

Cadmium stress in wheat seedlings: growth, cadmium accumulation and photosynthesis

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Seedlings of wheat (Triticum aestivum L.) cultivars Jing 411, Jinmai 30 and Yangmai 10 were exposed to 0, 10, 20, 30, 40 or 50 μM of CdCl₂ in a solution culture experiment. The effects of cadmium (Cd) stress on wheat growth, leaf photon energy conversion, gas exchange, and Cd accumulation in wheat seedlings were investigated. Gas exchange was monitored at 3, 9, 24 days after treatment (DAT). Growth parameters, chlorophyll content, leaf chlorophyll fluorescence, and Cd concentration in shoot and root were measured at 24 DAT. Seedling growth, gas exchange, chlorophyll content, chlorophyll fluorescence parameters were generally depressed by Cd stress, especially under the high Cd concentrations. Cd concentration and accumulation in both shoots and roots increased with increasing external Cd concentrations. Relationships between corrected parameters of growth, photosynthesis and fluorescence and corrected Cd concentrations in shoots and roots could be explained by the regression model Y = K/(1 + exp(a + bX)). Jing 411 was found to be Cd tolerant considering parameters of chlorophyll content, photosynthesis and chlorophyll fluorescence in which less Cd translocation was from roots into shoots. The high Cd concentrations were in shoots and roots in Yangmai 10 which has been found to be a relative Cd tolerant cultivar in terms of most growth parameters.
Wydawca
-
Rocznik
Tom
32
Numer
2
Opis fizyczny
p.365-373,fig.,ref.
Twórcy
autor
  • Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, 210095 Nanjing, Jiangsu Province, People’s Republic of China
autor
  • Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, 210095 Nanjing, Jiangsu Province, People’s Republic of China
  • College of Agriculture, Nanjing Agricultural University, No. 1 Weigang Road, 210095 Nanjing, Jiangsu Province, People’s Republic of China
  • Department of Genetics and Biotechnology, Research Centre Flakkebjerg, Aarhus University, 4200 Slagelse, Denmark
autor
  • Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, 210095 Nanjing, Jiangsu Province, People’s Republic of China
autor
  • Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, 210095 Nanjing, Jiangsu Province, People’s Republic of China
autor
  • Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, 210095 Nanjing, Jiangsu Province, People’s Republic of China
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
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