Due to an increasing demand for environmentally sustainable products, miscanthus and maize stover represent interesting lignocellulosic resources for conversion into biofuels and biomaterials. The overall purpose was to compare miscanthus and maize regarding cell-wall composition and stem anatomy for conversion into bioethanol and polymer composites using partial least squares regressions. For each of the two crops, six contrasted genotypes were cultivated in complete block design, and harvested. Internodes below the main cob for maize, and on the first aboveground internode for miscanthus, were analyzed for biochemistry and anatomy. Their digestibility was predicted using crop-specific near infrared calibrations, and the mechanical properties were evaluated in stem-based composites. On average, the internode cross-section of miscanthus anatomy was characterized by a thick rind (26.2%) and few but dense pith-bundles (3.5 nb/mm²), while cell-wall constituted 95.2% of the dry matter with high lignin (243.2 mg/g) and cellulose concentrations (439.7 mg/g). Maize internode-anatomy showed large cross-sections (397.5 mm²), pith with the presence of numerous bundles and non-lignified-pith fractions (22.3% of the section). Its cell-wall biochemistry displayed high concentrations of hemicelluloses, galactose, arabinose, xylose, and ferulic acid. Cell-wall, lignin, and cellulose concentrations were positively correlated with rind-fraction and pith-bundle-density, which explained strong mechanical properties as shown in miscanthus. Hemicelluloses, galactose, arabinose, and ferulic acid concentrations were positively correlated with pith fraction and stem cross-section, revealing high digestibility as shown in maize. This underlines interesting traits for further comparative genetic studies, as maize represents a good model for digestibility and miscanthus for composites.

由于对环境可持续产品的需求不断增加，金莲花和玉米秸秆代表了有趣的木质纤维素资源，可转化为生物燃料和生物材料。总体目的是使用部分最小二乘回归法比较黄mis和玉米在细胞壁组成和茎解剖上转化为生物乙醇和聚合物复合材料的情况。对于两种农作物中的每一种，以完全区组设计种植了六个对比基因型，并进行了收获。对于玉米的主要穗轴以下的节间，以及对桔梗的第一个地上节间的节间进行了生物化学和解剖学分析。使用特定于作物的近红外校准可预测其消化率，并在基于茎的复合材料中评估其机械性能。一般，²），而细胞壁占干物质的95.2％，其中木质素（243.2 mg / g）和纤维素浓度（439.7 mg / g）高。玉米节间解剖显示较大的横截面（397.5 mm ²），髓中存在大量的捆束和非木质化部分（占该部分的22.3％）。其细胞壁生物化学显示高浓度的半纤维素，半乳糖，阿拉伯糖，木糖和阿魏酸。细胞壁，木质素和纤维素的浓度与皮分率和髓束密度正相关，这说明了在桔属中表现出的强机械性能。半纤维素，半乳糖，阿拉伯糖和阿魏酸的浓度与髓部分和茎横切面呈正相关，如玉米所示，具有较高的消化率。这突出了用于进一步比较遗传研究的有趣特征，因为玉米代表了复合材料消化率和桔梗的良好模型。