Cotton (Gossypium spp.) is a major source of fibre for the textile industry and naturally coloured cotton fibre does not require the use of synthetic dyes making it an eco‐friendly option for textile production. Coloured cotton cultivars are however associated with lower fibre yields and reduced lint quality. A greater understanding of the genetic mechanisms underlying fibre colouration will aid in the development of improved cultivars. The brown‐fibred Gossypium arboreum L. accession PI 615733 was identified from the United States Department of Agriculture germplasm collection and crossed with three white‐fibred accessions PI 529712, PI 529729 and PI 615740 to develop F₂ populations for genetic evaluation. Population data indicated a single dominant gene conferred the brown fibre phenotype. Variation in the intensity of fibre colouration was observed within populations. These data failed to support an incomplete dominance model suggesting genetic modifiers may also play a role in fibre colouration. Additionally, chimeras were frequently observed in the PI 615733 × PI 615740 population. These data will be useful to further characterize the brown fibre trait.

中文翻译：

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棉兰种质棕色纤维表型的遗传评价PI 615733

棉（Gossypium spp。）是纺织工业的主要纤维来源，天然彩色棉纤维不需要使用合成染料，因此成为纺织品生产的环保选择。然而，有色棉花品种与较低的纤维产量和降低的皮棉品质有关。深入了解纤维着色的遗传机制将有助于改良品种的发展。欠压fibred棉花 亚洲棉L.加入PI 615733从农业种质资源收集的美国能源部确定，有三个白色fibred种质PI 529712，PI 529729和PI 615740杂交拓展F ₂人群进行遗传评估。群体数据表明单个显性基因赋予棕色纤维表型。在人群中观察到纤维着色强度的变化。这些数据未能支持不完全的优势模型，表明遗传修饰剂也可能在纤维着色中起作用。此外，在PI 615733×PI 615740人群中经常观察到嵌合体。这些数据将有助于进一步表征棕色纤维的性状。