Varietal differences in the cellulose, lignin and silica contents of the different plant parts of rice (Oryza sativa L.)
1997
Bonilla, P.S. | Tsuchiya, M. (Philippine Rice Research Inst., Maligaya, Munoz, Nueva Ecija (Philippines))
The amount of variation and distribution of cell-wall constituents, i.e., cellulose, lignin and silica in the different parts of the rice plant were investigated. A total of 53 varieties (47 indica and 6 japonica) were used. There were highly significant varietal differences in the cell wall constituents of the different rice varieties. Cellulose was the most abundant component of the cell wall followed by lignin and then silica. Downward from leaves to the roots, lignin and cellulose contents increased, however, the silica content decreased. There was significant amount of silica in the roots and that the absorbed silica was mainly accumulated in the shoots particularly in the leaf blade. Several patterns of distribution of cellulose, lignin and silica contents within the different plant parts were observed. Majority of the varieties have low amount of cellulose, lignin and silica. In the varietal classification, Pokkali, salt tolerant, contain high amounts of cellulose in the root but low cellulose and lignin in the shoot. IR4595-4-1-13, salt tolerant, have low cellulose and silica in all parts but with high lignin in leaf blade and root. IR28, salt susceptible, have high lignins in the leaf blade and root and high cellulose content with low silica in the leaf sheath and stem
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