The fibre content (FC) of sugarcane millable stalks is important for both sugar and bioenergy production. Higher FC favours the energy producer while lower FC facilitates the efficient sugar extraction. A molecular marker for FC helps select improved sugarcane cultivars with favourable partitioning of FC for both sugar and energy production industries. A quantitative trait loci (QTL) study was conducted using an enriched linkage map of LCP 85‐384 and FC data from two crop cycles (plant cane and first ratoon) of its self‐progeny population. A total of five unique QTL were identified across both crop cycles and combined, of which three QTL (qFC020, qFC044 and qFC053) were common explained a total of 22.46%, 23.93% and 25.14% of the phenotypic variances for plant cane, first ratoon and combined data, respectively. As FC values increased gradually, the QTL allele combination effect also increased. Using markers linked to these putative common QTL alleles would benefit the breeders to select sugarcane lines for sugar and bioenergy production.

中文翻译：

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鉴定控制甘蔗纤维含量的定量性状位点（QTL）（Saccharum hybrids spp。）

甘蔗可磨秸秆的纤维含量（FC）对于制糖和生物能源生产都很重要。较高的FC有利于能源生产者，而较低的FC有利于有效的糖提取。FC的分子标记有助于选择改良的甘蔗品种，并为糖业和能源生产行业提供有利的FC分配。定量性状基因座（QTL）研究是使用LCP 85-384和FC数据的丰富连锁图谱进行的，该数据来自其自生种群的两个作物周期（植物茎和第一再生株）。在两个作物周期中总共鉴定出五个独特的QTL，并将它们组合在一起，其中三个QTL（qFC020，qFC044和qFC053）是常见的解释，分别代表了植物茎，第一再生子和组合数据的表型差异的22.46％，23.93％和25.14％。随着FC值逐渐增加，QTL等位基因组合效应也增加。使用与这些推定的常见QTL等位基因相关的标记，将有利于育种者选择甘蔗品系来生产糖和生物能源。