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Author : Le Grand West Sloane
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (132 download)
Download or read book A Genetic Study of Fiber Length in American Upland Cotton written by Le Grand West Sloane and published by . This book was released on 1955 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Dix Breaux
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (132 download)
Download or read book A Genetic Analysis of Length and Perimeter of Fiber in American Upland Cotton written by Richard Dix Breaux and published by . This book was released on 1951 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas James Stafford
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (132 download)
Download or read book A Genetic Analysis of Strength of Fiber in a Cross of Two Varieties of American Upland Cotton written by Thomas James Stafford and published by . This book was released on 1951 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Calvin Clyde Murray
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.E/5 ( download)
Download or read book Inheritance of Length of Fiber in American Upland Cotton written by Calvin Clyde Murray and published by . This book was released on 1945 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jerry Lee Baker
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.:/5 (324 download)
Download or read book A Quantitative Genetic Study of Several Agronomic and Fiber Properties Among Selected Lines of Upland Cotton, Gossypium Hirsutum L written by Jerry Lee Baker and published by . This book was released on 1972 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Salvador Godoy
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (129 download)
Download or read book Genetic Study of Earliness Components in Upland Cotton, Gossypium Hirustum L. written by Salvador Godoy and published by . This book was released on 1984 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Brian Matthew Schwartz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (137 download)
Download or read book Evaluation of the Genetic Gain in Upland Cotton During the Twentieth Century written by Brian Matthew Schwartz and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic gain studies in the past have been used to evaluate the historical improvement of different traits and give insight into what magnitudes of gain might be possible in the future. Additionally, they have been carried out to defend the role of genetics during periods of stagnant or decreasing yield trends. This study was conducted over a 2-year period (2003 and 2004) and included nine current or obsolete cotton (Gossypium hirsutum L.) cultivars grown in 5 plant densities designed to evaluate varying levels of interplant competition. Plant densities were single plant culture with plants spaced 3m x 3m, 2m x 2m, 1m x 1m, 1m x 0.3m, and two commercial populations with plants spaced 1m x 0.1m. Results were analyzed for each trait to determine whether genetic gains are interrelated with tolerance to interplant competition or strictly under genetic control. The rates of genetic gain for lint yield were highest in the 1m x 0.1m, 1m x 0.3m, and 1m x 1m treatment with slopes of 8.7, 8.2, and 7.1 kg ha−1 yr−1 respectively. The slopes were each significantly smaller in the 2m x 2m and 3m x 3m spaced populations with gains of 3.6 and 1.5 kg ha−1 yr−1 respectively, implying that for lint yield, genetic gains have been made for tolerance to interplant competition. Similarly, modern maize hybrids only out perform obsolete hybrids at higher plant densities. Genetic gain for lint yield, fiber length, fiber strength, and fiber micronaire made in the context of tolerance to interplant competition is due in large part to the excellent performance of Deltapine 491 (2002) at higher plant populations.
Author : Chris Alan Braden
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (855 download)
Download or read book Inheritance of Cotton Fiber Length and Distribution written by Chris Alan Braden and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber quality data from five upland cotton (Gossypium hirsutum L.) genotypes, which were grown at College Station, TX during 2001 and 2002, were subjected to diallel and generation means analyses to determine the potential for improvement of fiber length and to determine the inheritance of length distribution data. Four near-long staple (NLS) upland cotton genotypes and one short-staple genotype were crossed in all combinations, excluding reciprocals. Estimates of general (GCA) and specific combining ability (SCA) for fiber length based on Griffing's diallel Model I, Method 4 were calculated for high volume instrumentation (HVI) upper-half mean (UHM) fiber length and advance fiber information system (AFIS) mean fiber length by weight (FLw), mean fiber length by number (FLn), upper quartile length by weight (Uqlw), fiber length distribution cross entropy (using 3 different standard or check distributions - CEA, CEB, and CEC), fiber length distribution kurtosis (FLwKurt), and fiber length distribution skewness (FLwSkew) for FLw. Across environments, GCA effects were significant for fiber length measurements of UHM, FLw, FLn, Uqlw, and SFCw and distribution measurements of CEA, CEB, FLwKurt, and FLwSkew. On the basis of GCA effects, TAM 94L-25 was the best parent to be used in a cross to improve upland fiber length, while Acala 1517-99 was the parent of choice to improve distribution among the 4 parents tested. The inheritance of AFIS fiber length measurements and distribution data was estimated using parents, F1, F2, and backcross generations. The magnitude and significance of the estimates for non-allelic effects in the parental combinations suggest that epistatic gene effects are present and important in the basic mechanism of AFIS fiber length and length distribution inheritance for the populations studied. Gene effects and variances for all AFIS fiber length and distribution data measurements were inherited differently in different environments and specific parental combination, suggesting environmentally specific mechanisms. Developing genotypes with enhanced fiber length and an optimal fiber length distribution should be a priority to improve spinning performance and product quality of U.S. upland cotton.
Author : David D. Fang
Publisher : Springer
ISBN 13 : 3030008711
Total Pages : 226 pages
Book Rating : 4.0/5 (3 download)
Download or read book Cotton Fiber: Physics, Chemistry and Biology written by David D. Fang and published by Springer. This book was released on 2018-11-09 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cotton fiber is the most important natural fiber used in the textile industry. The physical structure and chemical compositions of cotton fibers have been extensively studied. Newer high speed spinning instruments are being deployed around the world that demand longer, stronger and finer fibers. Consequently, genetic improvement in fiber quality has been stressed. With improvement in fiber quality has come the realization that further fiber improvement will require a better understanding of fiber development and biology. As a consequence, cotton fiber developmental biology, genetics and genomics have become focal points in the cotton research community. As the longest single-celled plant hair, cotton fiber has been used as an experiment model to study trichome initiation and elongation in plants. This book provides a comprehensive update on cotton fiber physics, chemistry and biology that form the three sections of the book. In the physics section, the physical structure of cotton fiber is first illustrated in great detail. Then a suite of fiber properties and their measuring methods are described. The pros and cons of each method are outlined. New methods to measure physical properties of single fiber and young developing fibers are included. In the chemistry section, the chemical compositions of cotton fibers are described in detail. This knowledge is necessary for efficient modification of cotton fibers for better and broader utilization. The advancement in cotton fiber modification using chemical and enzymatic methods opened new ways to utilize cotton fibers. In the biology section, the book first introduces the utilization of naturally occurring color cottons. Color cottons possess unique attributes such as better fire retardant ability. Advancement in understanding fiber color genetics and biochemical pathways and new utilization of color cottons are discussed. Recent technological advancements in molecular biology and genomics have enabled us to study fiber development in great depth. Many genes and quantitative trait loci related to fiber quality attributes have been identified and genetically mapped. Some of these genes and QTLs are being used in breeding. Progresses in cotton fiber improvement using breeding and biotechnology are discussed in the last chapter. This book serves as a reference for researchers, students, processors, and regulators who either conduct research in cotton fiber improvement or utilize cotton fibers.
Author : Eng Hwa Ng
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (872 download)
Download or read book Genetics of Cotton Fiber Elongation written by Eng Hwa Ng and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber elongation (ability to stretch before breaking) is one of the key components in determining overall yarn quality. Elongation in U.S. upland cotton (G. hirsutum L.) has remained largely neglected due to: absence of monetary incentives for growers to produce high elongation cotton; lack of research interests among breeders; and absence of a reliable fiber testing system for elongation. This study was conducted to determine the genetics of cotton fiber elongation via a diallel and generation means analysis (GMA). Findings from this study should lay the foundation for future breeding work in cotton fiber elongation. Of the seven distinctive upland parents used for the diallel study, general combining ability was far more prominent than specific combing ability for fiber elongation. Cultivar PSC 355 and Dever experimental line were the two parents identified as good combiners for fiber elongation in this study. The slight negative correlation between fiber elongation and strength remained true. Highly significant negative correlation was observed between fiber upper half mean length and elongation. Both Stelometer and HVI elongation measurements correlated well with values of 0.85 and 0.82 in 2010 and 2011, respectively. For the six families used in the GMA analysis, additive genetic control was prevalent over dominance effect. Based on the scaling test, no significant epistatic interaction was detected for fiber elongation. As expected, additive variance constituted a much larger portion of total genetic variation in fiber elongation than the dominance variance. On average, larger numbers of effective factor were identified in fiber elongation than all other fiber traits tested, suggesting that parents used in the GMA study are carrying different genetic materials/ loci for fiber elongation. Considerable gains in fiber elongation may be achieved by selectively crossing these materials in a pure-line breeding scheme while holding other important fiber traits constant. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151034
Author : Pundarik S. Pandya
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (583 download)
Download or read book Variability of Fiber Length in an Inbred Line of American Upland Cotton written by Pundarik S. Pandya and published by . This book was released on 1948 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew H. Paterson
Publisher : Springer Science & Business Media
ISBN 13 : 0387708103
Total Pages : 515 pages
Book Rating : 4.3/5 (877 download)
Download or read book Genetics and Genomics of Cotton written by Andrew H. Paterson and published by Springer Science & Business Media. This book was released on 2009-03-11 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Gossypium (cotton) genus presents novel opportunities to advance our understanding of the natural world and its organic evolution. In this book, advances of the past decade are summarized and synthesized to elucidate the current state of knowledge of the structure, function, and evolution of the Gossypium genome, and progress in the application of this knowledge to cotton improvement. This book provides the first comprehensive reference on cotton genomics.
Author : Benjamin Beyer
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (818 download)
Download or read book Genetic Improvement of Upper Half Mean Length and Short Fiber Content in Upland Cotton, Gosspium Hirsutum written by Benjamin Beyer and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Desired base upper half mean length (UHML) of upland cotton (G. hirsutum) in the U.S. has been set a 27.0 mm and is shorter than the standard set by the international community. Upland cotton genotypes from China, South Africa, West Africa, and the U.S. were test crossed to an extra long staple upland (ELSU) and a short staple upland (SSU) and selected genotypes that included both ELSU and MSU phenotypes were crossed in a half-diallel mating scheme to estimate general combing ability (GCA) effects and specific combining ability (SCA) effects. A recombinant inbred line (RIL) population was established to determine the narrow sense heritability (h^2) of AFIS short fiber content by weight (SFCw) and lower half mean length (LHML) and to estimate SFCw using HVI fiber properties. Obsolete cultivars from China are not likely sources for UHML improvement, cultivars from Africa and the U.S. could harbor alleles not being used in current elite short staple cultivars or modern ELSU cultivars. Two ELSU lines used in this study derived through interspecific hybridization with G. barbadense could contain alleles for UHML improvement in modern ELSU cultivars developed without any apparent G. barbadense introgression. A third line D & PL 45-867, might contain alleles for UHML improvement in long staple upland cotton genotypes. Narrow sense heritability estimates indicated a much higher heritability of LHML than AFIS SFCw. Correlation between AFIS SFCw and LHML did not agree with previous studies when using an ELSU X MSU cross. Further study is needed to understand this complex relationship.
Author : R. D. Breaux
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (364 download)
Download or read book A Genetic Analysis of Yield in American Upland Cotton written by R. D. Breaux and published by . This book was released on 1953 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ti-Hua Cheng
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.E/5 ( download)
Download or read book Studies in Cotton Breeding for the Improvement of Fiber written by Ti-Hua Cheng and published by . This book was released on 1937 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles James Whitfield
Publisher :
ISBN 13 :
Total Pages : 892 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Genetics of Certain Factors Responsible for Lint Quanitity in American Upland Cotton written by Charles James Whitfield and published by . This book was released on 1949 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Amir Latif
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659415401
Total Pages : 92 pages
Book Rating : 4.4/5 (154 download)
Download or read book Cotton Genetics written by Amir Latif and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upland Cotton (Gossypium hirsutum L.) is a major cash crop in the world. Cotton improvement can be accomplished by favorable combination of genes in cotton varieties through hybridization. This book covers study of inheritance of different yield contributing and fiber quality traits in upland cotton. Additive-dominance model was applied to understand gene action involved in the traits studied. This work explores the genetic behavior of these traits in upland cotton and will help cotton breeders to choose suitable parents for hybridization in their genetic improvement programs of cotton. This book will also be proved a guide for students of plant breeding and genetics who are working or planning to work on cotton crop.
