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Title
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Elevated ultraviolet-B radiation influences photosynthetic pigments and soluble carbohydrates of sweet almond [**Prunus dulcis** (Miller) D. Webb]
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Author
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Abstract
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| Due to anthropogenic influences, solar UV-B irradiance at the earth's surface is increasing. To determine effects of enhanced UV-B radiation on sweet almond (Prunus dulcis), one-year old seedlings were submitted to four levels of UV-B radiation namely 0 (UV-BC), 0.45 (UV-B1), 1 (UV-B2), 1.50 (UV-B3), and 1.96 (UV-B3) W m-2 at a PAR intensity of 300 ì mol m-2 s-1 for 5 weeks. UV-B stress led to a significant decrease (p<0.05 ) in photosynthetic and non-photosynthetic pigments such as chlorophyll a, chlorophyll b, total chlorophyll and carotenoid content, whereas a significant increase was observed for UV-B absorbing pigments (flavonoid and anthocyanin), total soluble sugars and relative electrolyte conductivity. Most of the studied parameters were only affected at high UV-B levels (> UV-B3). |
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Language
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English
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Source (journal)
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Electronic journal of environmental, agricultural and food chemistry. - -
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Publication
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2009
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ISSN
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1579-4377
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Volume/pages
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8
:11
(2009)
, p. 1077-1084
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Full text (open access)
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