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- Title
Rubisco Content and Specific Activity in Barley (Hordeum vulgare L.).
- Authors
ECOCHARD, R.; CAVALIE, G.; NICCO, C.; PIQUEMAL, M.; SARRAFI, A.
- Abstract
Seven barley varieties, differing widely in their geographic origin, were analysed at the seedling stage under controlled conditions for the following traits: (A) Soluble leaf protein content, (B) Rubisco content, (C) Total carboxylase activity, as well as for combinations of these basic characteristics: relative Rubisco concentration, relative carboxylase activity, and specific carboxylase activity of the enzyme. A very large genotypic variability was detected in all traits, especially for the total activity of Rubisco, with strong genotypic correlations between these traits, whereas environmental correlations were almost non-existent. There were also relatively good correlations with the gross assimilation rate (Pg) among the same range of varieties, measured in the adult stage in a previous investigation. For two out of five crosses analysed in the F generation, significant differences were found between reciprocal hybrids. These results are discussed in terms of heredity patterns of the characteristics concerned, namely the double genetic determinism of Rubisco: a large subunit controlled by maternally inherited chloroplast DNA and a small subunit controlled by nuclear DNA.
- Publication
Journal of Experimental Botany, 1991, Vol 42, Issue 1, p39
- ISSN
0022-0957
- Publication type
Article