Journal
BIOLOGIA PLANTARUM
Volume 55, Issue 2, Pages 291-296Publisher
ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s10535-011-0041-7
Keywords
acidity; chlorophyll content; chlorophyll fluorescence; Hordeum vulgare; stomatal conductance
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Funding
- Ministry of Agriculture, China [N20070331-01]
- Ministry of Science and Technology, China [2006BAD02B04-3]
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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 (Fv/Fm), net photosynthetic rate (P-N), intercellular CO2 concentration (c(i)), stomatal conductance (g(s)) and transpiration rate (E) less in an Al-tolerant genotype Gebeina than in an 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 as compared to pH 6.5. Combined stress of Cr and Al, caused further reduction in growth and photosynthetic parameters.
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