Biochemical and biosynthetic studies on lignification of Gramineae
1989
Gaudillere, M. | Monties, B.
Differences in lignification of forage crops were examined in terms of genetic, biosynthetic and environmental factors. This was achieved by comparison of brittle ecotypes of fescue (Festuca arundinacea), and brown-midrib (b.m.3)-mutants of maize (Zea mays) with the corresponding "normal" plants. For each plant type, Klason, acid-insoluble and acetyl bromide lignin contents, and monomeric compositions, were determined and compared. While only weak differences in lignification were found in the case of fescue, significant differences in both lignin content, and its monomeric composition, were found for maize between its upper and lower internodes. These differences were due to genetic and/or environmental factors. Heterogeneity in lignification, brittle organ character, and other biosynthetic aspects of stem formation in Gramineae are discussed, in relation to results previously obtained with rice and wheat.
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