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lint cotton; regression analysis; advanced fiber information system; high volume instruments; length; measurement; fiber quality; statistical models; prediction
Abstract:
... Twenty-nine bales of cotton with short fiber content ranging from approximately 5% to 25% were selected for the purpose of comparing the effectiveness and relationships among the current testing methods for fiber length. The instruments and/or methods used to measure short fiber include HVI, AFIS, and Suter-Webb array. Comparisons between the three methods indicate that they correlate well with ea ...
... Jute is one of the most important fibre crops, which is second only to cotton in providing environment-friendly (biodegradable and renewable) ligno-cellulose fibre. In order to improve this largely neglected crop, we conducted a preliminary study involving the following: (i) analysis of nature and extent of the genetic variability for fibre yield and four other related traits in a set of 81 genoty ...
... This study discusses the evaluation of stretch-breaking force and its CV% in the tow-to-yarn direct spinning with 12k oxidized filament tow. We aimed to describe a new method for determining suitable draft conditions in the direct spinning to obtain the best oxidized yarn quality. To correlate the stretch-breaking force and the yarn quality, oxidized direct spun yarns were spun on a modified labor ...
in situ hybridization; retting; ribosomal RNA; Acidobacteria; ribosomal DNA; niches; ponds; jute; clones; beta-Proteobacteria; bacterial communities; population structure; Actinobacteria; fiber quality; culture media
Abstract:
... Jute is one of the most versatile bast fibers obtained through the process of retting, which is a result of decomposition of stalks by the indigenous microflora. However, bacterial communities associated with the retting of jute are not well characterized. To investigate the presence of microorganisms during the process of jute retting, full-cycle rRNA approach was followed, and two 16S rRNA gene ...
germplasm; plant breeding; lint cotton; Gossypium hirsutum; varieties; general combining ability; yield components; additive gene effects; fiber quality; specific combining ability; Tanzania
Abstract:
... In Tanzania, cotton is of great economical importance, representing a large percentage of agricultural exports, but yield and lint quality is still relatively poor. The aim of this study was to identify parents to improve boll and lint yield and quality. Parents and F1 progeny of a 7 x 7 diallel were evaluated in four different environments. Results indicated significant variation for especially y ...
lint cotton; glucose; Gossypium hirsutum; sucrose; general combining ability; genotype; line differences; fiber quality; sugar content; specific combining ability
Abstract:
... Sticky cotton causes severe processing problems at textile mills and can be caused by plant sugars deposited directly from the plant to the lint in the absence of insects. A partial diallel design was used to investigate the combining ability of six upland cotton, Gossypium hirsutum L., genotypes in Lubbock, Texas. Sucrose and glucose on fibers were measured as well as more mechanical fiber proper ...
... The usual practice of estimating association and direct and indirect effects among various traits in Gossypium hirsutum is with ungrouped genetic material based on staple length and strength. During 2003-2004 and 2004-2005 genotypic and phenotypic association among ten characters were estimated in G. hirsutum genotypes: (i) set-1: 10 genotypes of low fibre strength (<=196.2 mN/tex) and medium stap ...
... Castrated Angora kids (n = 210, initial BW = 25.4 ± 4.0 kg) approximately 7 months of age were used in two consecutive years (2002 and 2003) to evaluate three production systems and coats in terms of animal performance, carcass traits, mohair production and quality, and production costs. In both years, half the animals were assigned to an innovative feeding system (RF) that consisted of an open-si ...
... Nitrogen is required for adequate residue production from cereal cover crops used in no-till cotton (Gossypium hirsutum L.) production, but residues can immobilize N needed by cotton. We conducted a 3-yr field study on a Decatur silt loam (clayey, kaolinitic, thermic Rhodic Paleudult) in northern Alabama to test N fertilizer practices for cotton grown with a rye (Secale cereale L.) cover crop and ...
... More than 70% of cotton (Gossypium hirsutum L.) grown in the Tennessee Valley of northern Alabama is produced using conservation tillage systems with cereal cover crops. The resulting decreased N efficiency requires development of new N fertilizer recommendations. We conducted a replicated 3-yr field study on a Decatur silt loam (fine, kaolinitic, thermic Rhodic Paleudult) to determine the effects ...
... Cotton producers in the Mississippi Delta plant in the early spring, but wet, cold weather often develops that may reduce plant population directly or indirectly. Producers must occasionally decide if replanting is necessary. The objective of these studies was to determine the effects of planting dates and plant populations on cotton yield, lint quality, and crop maturity in the Mississippi Delta. ...
cotton; harvest date; soil water content; Gossypium hirsutum; water use efficiency; subsurface irrigation; sprinkler irrigation; crop yield; dryland farming; irrigation rates; field experimentation; irrigated farming; fiber quality; Georgia
Abstract:
... Subsurface drip (SSD) is used as a water-efficient alternative to overhead irrigation in many crops. This study compared soil water, water use, crop maturity, lint yield, and fiber quality of cotton (Gossypium hirsutum L.) grown with SSD to cotton grown with overhead irrigation. Three experiments were conducted at two Georgia locations in 2004 and 2005. Treatments consisted of overhead irrigated, ...
... Seedlings of upland cotton (Gossypium hirsutum L.) are vulnerable to the partial or complete loss of their cotyledons due to an array of biotic and abiotic causes. These experiments were conducted in the field over a 4-yr period to determine the effects of such losses in the early vegetative cotyledon growth stage on lint yield, selected lint yield components, and fiber traits. Loss of half a coty ...
... To identify fleece and animal growth characteristics that are associated with cashmere production, the magnitude and direction of factors affecting cashmere production using fleece and live body weight measurements available to the cashmere producer were modelled. Data was collected from 11 Australian commercial cashmere farms. Following log transformation of clean cashmere weight, the best genera ...
... Awareness of the importance of cotton fiber quality (Gossypium, L. sps.) has increased as advances in spinning technology require better quality cotton fiber. Recent advances in geospatial information sciences allow an improved ability to study the extent and causes of spatial variability in fiber parameters. However, these studies are often harvested by hand and ginned on small research gins. Fib ...
... An objective of U.S. cotton breeding programs is to provide raw material that processes efficiently and produces better textile products without compromising yield. Annual domestic consumption dropped from 10.4 million bales in 1998 to 5.5 million bales in 2007. Exports increased from 4.3 to 16.2 million bales. Increased reliance on export markets will require the United States to compete more eff ...
... In forest breeding programmes, growth has typically been used as a selection trait of prime importance in Norway spruce (Picea abies (L.) Karst.), whereas less attention has been given to the wood and fibre characteristics. In the above context, we investigated phenotypic relationships between different fibre properties and growth and wood density traits in 20 cloned Norway spruce based on a clona ...
... When alien DNA inserts into the cotton genome in a multicopy manner, several quantitative trait loci (QTLs) in the cotton genome are disrupted; these are called dQTL in this study. A transgenic mutant line is near-isogenic to its recipient, which is divergent for the dQTL from the remaining QTLs. Therefore, a set of data from a transgenic QTL line mutated by Agrobacterium-mediated transformation ( ...
... An experiment was carried out to study direct and indirect responses to selection in the Angora rabbit. There were two selection lines, one selected for high fleece weight and the other for low fleece weight. Data from 669 female rabbits born in 1994-2001 and having produced a total of 2923 harvest of wool were analysed to quantify the correlated responses to selection. By 2001, there had been eig ...
... As a part of the National Fire Plan, the USDA Forest Service is conducting research to reduce the severity of forest fires through effective utilization of low- or no-value logging residues and forest thinnings. This report explores the effect of processing on the physical properties of the fibrous material and flat fiberboard panels made from small-diameter lodgepole pine treetops processed with ...
... This paper is concerned with an inverse method for the characterization of the elastic anisotropy of plant fibres. A good knowledge of the properties of composites reinforced with these fibres is essential for the safe design of the related structures. In this work, experimentation and analytical modelling were thoroughly combined to optimize the determination of plant fibre properties from their ...
... An experimental ginning roller covering, made from woven fiberglass, was tested on a roller gin stand to evaluate its ginning performance and effect on fiber quality. The experimental covering was much more aggressive than the standard covering; it ginned at twice the rate (2.4 vs. 1.2 bales per hour) at a much lower automatic feed-rate control setting and resulted in reduced roller heating (32.7 ...
... Due to recent changes in EC subsidies for flax cultivation it has been difficult to grow short fibre flax profitably in the UK. The Texflax project aimed to demonstrate that high quality flax fibre can be produced and processed on short fibre cotton spinning systems. Initially 92 flax accessions were cultivated on test sites in the UK over three growing seasons to explore the range of fibre diamet ...
diameter; feed conversion; body weight; sheep feeding; carcass weight; pelleted feeds; nutritive value; Merino; fiber quality; lambs; feed intake; heritability; animal performance; wool; Western Australia
Abstract:
... There is anecdotal evidence from Western Australian breeders that Dohne sheep maintain a higher level of meat and wool production than Australian Merinos. Feed efficiency, carcass and wool attributes are moderately heritable so we hypothesised there would be differences in these traits between Merino and F1 Dohne x Merino lambs. Two groups of 15 Merino and 15 F1 Dohne x Merino wether lambs (29-40 ...
... The impact of genotype and of frequency and timing of shearing, on mohair attributes and production of modern Angora goats was studied. Goats in the southern hemisphere grazed pastures between February 2004 and 2006. There were seven shearing treatments by three genetic strains with four or eight replicates of individual goats. Treatments were: three different 6-month shearing intervals and two of ...
... The University of Chiapas established in 1991 a flock of local criollo sheep from the Highlands of Chiapas to serve as an open nucleus for a genetic selection program. Its objective is to provide selected rams and ewes to the indigenous Tzotzil villages. From the perspective of the Tzotzil women, wool quality (TWQ) refers to a mix of diverse fleece characteristics. In this study, 2472 production r ...
... Leaf shape is an important factor affecting canopy structure, photosynthetic characteristics, and yield. Introducing okra leaf shape is considered an important strategy in cotton heterosis breeding. The objective of the study was to evaluate the heterosis in okra leaf cotton hybrid F₁s, which were developed by crossing two sterile near isolines and three restorer near isolines. A normal leaf check ...
... Historically, reselection, pedigree, and mass-selection breeding methods have been used to develop open-pollinated cultivars of upland cotton (Gossypium hirsutum L.). As a result, modern cotton cultivars should have accumulated additive genetic effects with time, while also possessing fewer nonadditive gene effects than obsolete cultivars. A topcross test was conducted to compare the heterotic eff ...
... The origin of the Small-Scale Spinning Test, which is used to characterize the quality of samples of cotton weighing between 15 and 30lbs (6.8 and 13.6 kg), lies in the annual cotton crop assessments performed by the USDA's Agricultural Marketing Service and the Textile Research Center of Texas Tech University. Each program of evaluation involved thorough testing of the raw cotton followed by the ...
... Flax (Linum usitatissimum L.) is a raw material used for important industrial products. Linen has very high quality textile properties, such as its strength, water absorption, comfort and feel. However, it occupies less than 1% of the total textile market. The major reason for this is the long and difficult retting process by which linen fibres are obtained. In retting, bast fibre bundles are sepa ...
... Maintaining profitable and sustainable production of cotton (Gossypium hirsutum L.) relies on improvements in management. The objective of this study was to determine the proper defoliation timing to optimize lint yield and fiber quality through calculating heat unit (HU; DD15.5) accumulation beyond cutout, defined as five nodes above white flower (NAWF = 5). Experiments were conducted in Burleson ...
... Research and development of an innovative production system for hemp (Cannabis sativa L.) fibre for textile use requires the integration of multidisciplinary knowledge from cultivation technique to realization of end products. Research was carried out to study the effect of the agronomic factors cultivation year (2003-2004), genotype (Futura 75 and Tiborszallasi), plant population (120, 240 and 36 ...
... The powered roll gin stand is a new saw-type ginning technology that has undergone numerous studies evaluating its use for ginning seed cotton. Past results have shown increased production and turnout without adversely affecting fiber properties. In some cases, improvements in fiber properties over a conventional gin stand were demonstrated. This article reports High Volume Instrument and Advanced ...
Gossypium barbadense; branching; cotton; diploidy; early development; fiber quality; interspecific hybridization; pest resistance; pistil; pollen tubes; selfing
Abstract:
... Interspecific hybridisation has played significant role in the improvement of economically useful traits such as productivity, earliness, fibre quality and resistance to pests and diseases in cotton. However, wide crosses are often limited by the operation of either pre or/and post-fertilization barriers. The present study on pollen tube behaviour of four diploid wild species viz., G. triphyllum, ...
... In a two-year (2005-2006) study conducted at three sites in central (Larissa) and northern (Alexandroupolis, Thessaloniki) Greece, we aimed to investigate the relationships between seedcotton yield and lint quality with leaf physiological traits (carbon isotope discrimination-Δ, ash content and K concentration). Eighteen lines with their original cultivars (Christina, Flora, Corona) were tested un ...
... The objectives of these experiments were to evaluate the effectiveness of a modified cylinder cleaner in cleaning lint based on grid bars with a sharp cleaning-edge and compare the performance of one cylinder cleaner to two cylinder cleaners in series operating at one or two speeds. Overall, in comparison to the baseline, saw-type lint cleaner (SLC), cylinder cleaners in various configurations cle ...
Populus tremula; Populus tremuloides; fiber quality; genes; hybrids; juveniles; modulus of elasticity; phenotype; photography; proteins; saplings; tensile strength; transgenic plants; wood
Abstract:
... Functional analysis of genes and proteins involved in wood formation and fiber properties often involves phenotyping saplings of transgenic trees. The objective of the present study was to develop a tensile test method for small green samples from saplings, and to compare mechanical properties of juvenile European aspen (Populus tremula) and hybrid aspen (Populus tremula × tremuloides). Small micr ...
Fourier transform infrared spectroscopy; Picea abies; Pinus sylvestris; chemical analysis; energy; fiber quality; gel chromatography; microstructure; parenchyma (plant tissue); raw materials; refining; sawmills; slabs; thermomechanical pulping; triacylglycerols; wood
Abstract:
... Due to the increasing demand for Norway spruce as prime raw material for high-yield pulping, recent interest has focused on Scots pine as an alternative. However, the intrinsic properties of Scots pine, particularly the high amounts of extractives and the fiber properties, have been considered a disadvantage for thermomechanical pulping. A study was therefore conducted on the variations in the spa ...
... The narrow genetic base of cultivated cotton germplasm is hindering the cotton productivity worldwide. Although potential genetic diversity exists in Gossypium genus, it is largely 'underutilized' due to photoperiodism and the lack of innovative tools to overcome such challenges. The application of linkage disequilibrium (LD)-based association mapping is an alternative powerful molecular tool to d ...
... Reflectance spectra of cotton fiber samples having different fiber quality levels were measured with a high-resolution spectrophotometer, processed with waveband averaging and wavelet analysis, and then related to micronaire with multiple linear regression. Regression models indicated that micronaire had a close relationship (R2 = 0.89) with reflectance at seven 100 nm wavebands (1120, 1296, 1550, ...
... Inclined cylinder cleaners are used primarily for cleaning upland seed cotton. Previous studies have shown that these cleaners are generally less aggressive than saw-type lint cleaners when used for cleaning lint. The objective of this study was to evaluate the seed cotton and lint cleaning performances of a modified cylinder cleaner equipped with grid bars in the shape of chisel blades. The clean ...
... Interspecific hybridization among species of cotton has lead to improvement in productivity, earliness, fibre quality and resistance to pests and diseases. However, wide crosses is often limited by the operation of either pre- or/and post-fertilization barriers. An investigation on pollen tube behaviour of four wild species in the pistils of Gossypium hirsutum was taken up. Pollen germination was ...
... Four-way cross (4WC) involving four different inbred lines frequently appears in the cotton breeding programs. However, linkage analysis and quantitative trait loci (QTL) mapping with molecular markers in cotton has largely been applied to populations derived from a cross between two inbred lines, and few results of QTL dissection were conducted in a 4WC population. In this study, an attempt was m ...
seed cotton; yarns; cotton ginning; cotton gin trash; surfactants; water; water content; advanced fiber information system; fiber quality; spraying; atomization
Abstract:
... Moisture was restored to seed cotton before ginning in the conveyer-distributor using an atomizing spray nozzle to increase fiber moisture content in the gin stand. A total of 54 bales were ginned with moisture restoration using an atomizing spray of water or water with either of two surfactants. Samples were taken for determination of moisture content and fiber properties. The moisture content of ...
... Arkot 9608ne (Reg. No. GP-888, PI 651854) is a noncommercial breeding line of cotton (Gossypium hirsutum L.) that was released by the Arkansas Agricultural Experiment Station in August 2007. The line was selected from a 1996 cross of ‘MD51ne’ and Arkot 8712, and possesses the nectariless and smooth-leaf morphological traits. Lint yields of Arkot 9608ne have approximated commercial check cultivars ...
... Arkot JJ46 (Reg. No. GP-890, PI 651855), Arkot 9610 (Reg. No. GP-891, PI 651856), and Arkot 9620 JJ46 (Reg. No. GP-892, PI 651857) are noncommercial breeding lines of cotton (Gossypium hirsutum L.) released by the Arkansas Agricultural Experiment Station in September 2007. Arkot JJ46 was derived from a cross between ‘SG 125’ and ‘HyPerformer HS46’. Arkot 9610 was derived from a cross between ‘SG 4 ...