Pigment composition in Norway spruce needles suffering from different types of nutrient deficiency |
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Authors: | S Solberg Tord K Rindal Gunnar Ogner |
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Institution: | Norwegian Forest Research Institute, H?gskoleveien 12, N-1432 ?s – Norway Tel. Fax +47?64948971, NO
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Abstract: | Concentrations of pigments in needles of yellowish Norway spruce Picea abies (L.) Karst] trees suffering from either N, Mg or K deficiency in field sites in southeast Norway are reported. The yellowish
trees had a considerably lower (roughly 50%) pigment concentration, as well as a lower chlorophyll/carotenoid ratio, compared
to green trees within the same sites. Yellowing was interpreted as a general bleaching of colour, as well as a slight turn
from the green (chlorophylls) towards yellow (lutein). Concentrations of pigments were highly intercorrelated. N deficiency
was especially associated with low α-carotene concentrations. This was interpreted as α-carotene being the most sensitive
pigment to stress. However, this pigment might be specifically sensitive to N deficiency. Carbohydrate concentrations were
slightly higher in yellowish trees.
Received: 5 June 1997 / Accepted: 29 August 1997 |
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Keywords: | Pigments Carbohydrates Yellowing Nutrient deficiency Norway spruce |
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