Variation in the cellulose, lignin and silica contents of various parts of different rice (Oryza sativa L.) cultivars

Issue Date

6-2001

Abstract

Variations in and distribution of cell wall constituents such as cellulose, lignin and silica in the leaf blade, leaf sheaths and stems, and roots were investigated in 47 indica and 6 japonica cultivars of rice (Oryza sativa L.). Cellulose, lignin, and silica were the most abundant components. Lignin and cellulose increased from the leaves to the roots, but silica decreased exponentially, with an almost insignificant amount found in the roots. The absorbed silica was mainly accumulated in the shoots, particularly in the leaf blade.

A highly significant negative correlation was found between silica and lignin, and between silica and cellulose in the leaf blade. DMRT showed highly significant variations in the cell wall constituents among the cultivars. Cell wall modifications during biotic and abiotic stresses are also discussed. There is no need for further research on the localization of cell wall constituents and the mechanism of cellulose and lignin contributing to tolerance.

Source or Periodical Title

Philippine Agricultural Scientist, The (Formerly: The Philippine Agriculturist)

ISSN

0031-7454

Volume

84

Issue

2

Page

126-137

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

quarterly

Physical Description

graphs; tables; references

Language

English

Subject

cellulose, lignin, silica, cell wall constituents, rice, salt tolerance

En – AGROVOC descriptors

RICE; ORYZA SATIVA; VARIETIES; CELLULOSE; LIGNINS; SILICA; CELL WALLS; AGRONOMIC CHARACTERS; SHOOTS; SALT TOLERANCE

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