Lignin, structural and non-structural carbohydrates and their association with stem strength components of irrigated spring wheat
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ArticleLanguage: English Publication details: Mexico : CIMMYT, 2017.Subject(s): Online resources:
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Proceedings of the 3rd International TRIGO Wheat Yield Potential p. 98-106Summary: Wheat stem biomass is composed of three major components: lignin, cellulose and hemicellulose. Previous studies have shown that each of these components confer mechanical strength to the stems. However, assumptions about which is the key component might be complex. Most of the literature indicates that lignin is more related to stem strength, although cellulose and hemicellulose are also mentioned in some studies. In this study, the objective was to compare cultivars with low, intermediate and high stem strength. Fractions of biomass components (lignin, cellulose and hemicellulose) and water soluble carbohydrates (WSC) and key stem strength traits were estimated for 10 cultivars during 2012, 2013 and 2014. Significant differences were identified between experiments and cultivars for cellulose, hemicellulose, lignin and WSC. Genotype × environment (G×E) interaction was significant (P < 0.01 – 0.001) for lignin and cellulose but not for WSC and hemicellulose. Analyses of variance indicated no significant differences between means of low, intermediate and high stem strength cultivars. Additionally, regression analysis suggested that there was no individual effect of the three major components of the structural biomass (lignin, cellulose and hemicellulose) on the stem strength and stem material strength.
| Item type | Current library | Collection | Call number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|
| Conference paper | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | Available |
Open Access
Wheat stem biomass is composed of three major components: lignin, cellulose and hemicellulose. Previous studies have shown that each of these components confer mechanical strength to the stems. However, assumptions about which is the key component might be complex. Most of the literature indicates that lignin is more related to stem strength, although cellulose and hemicellulose are also mentioned in some studies. In this study, the objective was to compare cultivars with low, intermediate and high stem strength. Fractions of biomass components (lignin, cellulose and hemicellulose) and water soluble carbohydrates (WSC) and key stem strength traits were estimated for 10 cultivars during 2012, 2013 and 2014. Significant differences were identified between experiments and cultivars for cellulose, hemicellulose, lignin and WSC. Genotype × environment (G×E) interaction was significant (P < 0.01 – 0.001) for lignin and cellulose but not for WSC and hemicellulose. Analyses of variance indicated no significant differences between means of low, intermediate and high stem strength cultivars. Additionally, regression analysis suggested that there was no individual effect of the three major components of the structural biomass (lignin, cellulose and hemicellulose) on the stem strength and stem material strength.
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