The effect of chromium and aluminum on growth, root morphology, photosynthetic parameters and transpiration of the two barley cultivars
2011
Ali, S.,Zhejiang Univ., Hangzhou (China). Dept. of Agronomy | Zeng, F.,Zhejiang Univ., Hangzhou (China). Dept. of Agronomy | Qiu, L.,Zhejiang Univ., Hangzhou (China). Dept. of Agronomy | Zhang, G.,Zhejiang Univ., Hangzhou (China). Dept. of Agronomy
The effect of aluminum and chromium on two barley genotypes differing in Al tolerance was studied in a hydroponic experiment. Al stress decreased plant growth, biomass production, chlorophyll content and photosynthetic efficiency determined as variable to maximum chlorophyll fluorescence ratio, net photosynthetic rate, intercellular CO2 concentration, stomatal conductance and transpiration rate less in the Al-tolerant genotype Gebeina than in the Al-sensitive genotype Shang 70-119. Cr stress also caused marked reduction in growth and photosynthetic traits in barley plants. Higher reduction was observed at pH 4.0 than at pH 6.5. Combined stress of Cr and Al caused further reduction in growth and photosynthetic parameters.
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