Never say dye: The story of coloured cotton

Murthy, M.S.S.

doi:10.1007/bf02913764

Cited by 35 publications

(35 citation statements)

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“…in South and Central America (Murthy 2001). These are regarded as inferior to white cotton, in virtue of the lower yield, shorter and weaker fibers and variably of the color.…”

Section: Introductionmentioning

confidence: 98%

“…These are regarded as inferior to white cotton, in virtue of the lower yield, shorter and weaker fibers and variably of the color. Hence, cotton breeders are trying to improve these characteristics to produce better and more productive varieties of colored cotton (Murthy 2001;Dutt et al 2004). Commercially, the colored fibers gained greater prominence after the impressive efforts made by Sally Fox to improve the fiber quality of colored cottons by selective breeding, resulting in colored hybrids able to produce machine-spinnable colored cotton (Murthy 2001).…”

Section: Introductionmentioning

confidence: 99%

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Cellulose nanofibers from white and naturally colored cotton fibers

et al. 2010

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Suspensions of white and colored nanofibers were obtained by the acid hydrolysis of white and naturally colored cotton fibers. Possible differences among them in morphology and other characteristics were investigated. The original fibers were subjected to chemical analysis (cellulose, lignin and hemicellulose content), X-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM). The nanofibers were analyzed with respect to yield, elemental composition (to assess the presence of sulfur), zeta potential, morphology (by scanning transmission electron microscopy (STEM)) and atomic force microscopy (AFM), crystallinity (XRD) and thermal stability by thermogravimetric analysis in air under dynamic and isothermal temperature conditions. Morphological study of several cotton nanofibers showed a length of 85-225 nm and diameter of 6-18 nm. The micrographs also indicated that there were no significant morphological differences among the nanostructures from different cotton fibers. The main differences found were the slightly higher yield, sulfonation effectiveness and thermal stability under dynamic temperature conditions of the white nanofiber. On the other hand, in isothermal conditions at 180°C, the colored nanofibers showed a better thermal stability than the white.

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“…in South and Central America (Murthy 2001). These are regarded as inferior to white cotton, in virtue of the lower yield, shorter and weaker fibers and variably of the color.…”

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Cellulose nanofibers from white and naturally colored cotton fibers

et al. 2010

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“…However, Richmond (1943) reported that in Texas green and brown lint, each color was controlled by a single incompletely dominant gene. In Murthy (2001), it was defined that the gene(s) for lint color is often found to be pleotropic, i.e. controlling more than one trait.…”

Section: Introductionmentioning

confidence: 99%

QTL ANALYSIS OF FIBER COLOR AND FIBER QUALITY IN NATURALLY GREEN COLORED COTTON (Gossypium hirsutum L.)

Semizer-Cuming¹,

Altan²,

Akdemir³

et al. 2015

Turkish Journal of Field Crops

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Improving fiber quality of naturally colored cotton has become more important in recent years due to changes in the spinning technology and consumer demand. The identification of quantitative trait loci (QTL) closely linked to the fiber quality traits can allow marker assisted selection (MAS) which leads us to future's improved cotton cultivars. In this study, we performed genetic mapping on F 2 population of G. hirsutum (Yesil × Nazilli 84) intraspecific cross, and identified QTL for fiber color parameters (L, a, b, ∆L, ∆a, ∆b, ∆E) and fiber quality traits (fiber length, uniformity and elongation). The resulting genetic linkage map comprised of 123 amplified fragment length polymorphism (AFLP) markers and 27 linkage groups (LGs), covering 2068.5cM with an average distance of 16.8cM between two markers. Using single marker analysis a total of 43 QTL for fiber color parameters and fiber quality traits were identified, including four for fiber length, two for fiber uniformity, two for fiber elongation, five for L, four for a, four for b, eight for ∆L, four for ∆a, four for ∆b and six for ∆E. The identified QTL for fiber color parameters and fiber quality traits explained between 7.8% and 14.6% and between 5.9% and 14.7% of the phenotypic variation, respectively. Additionally, recombinant individuals having green fiber color together with long fiber length, high fiber uniformity and elongation were obtained in the segregating population. These individuals can be used to develop new cotton varieties in the future.

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“…Hua et al 2 showed that flavonoid compounds are the main components for fibre pigment in coloured cotton. Because of the poor fibre quality of coloured cotton, only brown and green varieties are used in production 3 . Scientists have attempted to cross white cotton with coloured cotton to improve fibre quality of coloured cotton, but the results were unsatisfactory 4 .…”

Section: Introductionmentioning

confidence: 99%

Cellulose synthesis in coloured cotton

Senhe¹,

Hong²,

Xu³

et al. 2015

ScienceAsia

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Using green, brown, and white cotton as materials, the contents of cellulose, carbohydrates, and flavonoid compounds as well as enzyme activities related to cellulose synthesis were investigated at various stages of fibre development to elucidate the characteristics of cellulose synthesis. The results showed that cellulose contents in all three cotton fibres showed 'S-shaped curve' changing patterns. According to a logistic growth model, the lower maximum accumulative rate of cellulose in the coloured cotton indicated less cellulose accumulation during fibre development. No significant differences in the carbohydrate content and carbohydrate transformation rates were observed between coloured and white cotton fibre. However, the flavonoid content in coloured cotton fibres was significantly higher than white cotton, and the flavonoid biosynthesis in coloured cotton fibres consumed a large amount of carbohydrates which should normally be used for cellulose synthesis. Low indoleacetic acid oxidase and peroxidase activities lowered cellulose accumulation in coloured cotton fibres. High activities of sucrose synthetase and β-1,3-glucanase in coloured cotton fibres may promote efficient utilization of carbohydrates. However, carbohydrate metabolism in the coloured cotton fibre should not only be responsible for cellulose biosynthesis but also for flavonoid biosynthesis.

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Never say dye: The story of coloured cotton

Cited by 35 publications

References 1 publication

Cellulose nanofibers from white and naturally colored cotton fibers

Cellulose nanofibers from white and naturally colored cotton fibers

QTL ANALYSIS OF FIBER COLOR AND FIBER QUALITY IN NATURALLY GREEN COLORED COTTON (Gossypium hirsutum L.)

Cellulose synthesis in coloured cotton

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