Identification of quantitative trait loci (QTL) controlling fibre content of sugarcane (Saccharum hybrids spp.)

Abstract

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.

Registration of ‘CP 13‐1954’ sugarcane for Florida organic soils

“…al. (2021). CP 13‐1954 was also tested for Bru 1, a major locus for resistance to brown rust of sugarcane according to Asnaghi et al.…”

“…Reaction conditions of polymerase chain reactions were described in Momotaz et al (2022). Four pairs of simple sequence repeat (SSR) primers, extracted from the International Consortium for Sugarcane Biotechnology (Cordeiro et al, 2003), were used for the molecular characterization as described in Islam et al (2021) (Table 2). SSR fragment's data of CP 13-1954 along with other 14 genotypes comprising commercial cultivars, along with CP 13-1954 were used to create the hierarchical clustering tree as described in .…”

“…'CP 12-2195' (Islam et al, 2019) appeared to be the most closely related genotype among the tested clones with CP 13-1954. Cluster of 21 sugarcane cultivars and selections including CP 13-1954 is described in Islam et al (2021).…”

Rendimiento y calidad de siete variedades de caña de azúcar en El Mante, Tamaulipas

“…La fibra es un componente seco e insoluble en el agua del tallo que resulta importante en la medición de la calidad de la caña debido a su relación inversa con la extracción de jugo y la eficiencia de la molienda (Islam et al, 2021), por lo tanto, los niveles aceptables se encuentran entre 10 y 14% (Gravois y Milligan, 1992), ya que, de lo contrario por cada aumento de 1% en el contenido de fibra se provoca una disminución en los valores teóricos de sacarosa recuperable que varía del 1.51 al 3.02 g kg -1 de caña (Glaz et al, 2010). En este componente las variedades no mostraron diferencias entre sí, atribuido a la estabilidad química que presenta este cultivo en los compontes de la pared celular, formada principalmente por hemicelulosa, celulosa y lignina, que en conjunto proporcionan soporte a los tallos (Waclawovsky et al, 2010;Figueiredo et al, 2019).…”

Quantitative trait locus mapping for important yield traits of a sorghum-sudangrass hybrid using a high-density single nucleotide polymorphism map

“…1 (JC-1) ( Han et al., 2015 ). However, conventional breeding results from the perennial selection of crop hybrid populations for important phenotypic traits, which are time-consuming and inefficient regarding targeted modifications for complex traits ( Huang and Yan, 2019 ; Islam et al., 2021 ). With molecular biology’s rapid development, molecular marker-assisted breeding has received increasing attention in forage breeding.…”