Genetics Of Cotton Fiber Elongation

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Genetics Of Cotton Fiber Elongation

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Author : Eng Hwa Ng
language : en
Publisher:
Release Date : 2013

Genetics Of Cotton Fiber Elongation written by Eng Hwa Ng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

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

Past Present And Future Trends In Cotton Breeding

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Author : Mehboob-Ur- Rahman
language : en
Publisher: BoD – Books on Demand
Release Date : 2018-05-02

Past Present And Future Trends In Cotton Breeding written by Mehboob-Ur- Rahman and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-02 with Medical categories.

Cotton, a source of natural fiber for textile industry, has a long breeding history aiming at increasing cotton fiber yield and its quality. Newly developed cotton varieties poorly respond in low-input environments. Secondly, the impact of changing climate may threaten the cotton production in the future. To address these challenges, efforts toward the development of resilient cotton varieties have been initiated using genetic and modern genomic approaches. In this book, research updates on cotton fiber types and properties, DNA markers for selecting desirable cotton plants, and cotton fiber genomics were compiled. Also, the modern breeding trends including development of transgenic cotton and the biosafety studies and possibilities of improving cotton genome using modern genome editing tools were also compressively discussed.

Functional Genomics Of Early Development And Elongation Of Cotton Fibers

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Author : Alaaddin Bulak Arpat
language : en
Publisher:
Release Date : 2006

Functional Genomics Of Early Development And Elongation Of Cotton Fibers written by Alaaddin Bulak Arpat and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

Genetics And Genomics Of Cotton

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Author : Andrew H. Paterson
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-03-11

Genetics And Genomics Of Cotton written by Andrew H. Paterson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-03-11 with Science categories.

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.

Cotton Fiber Physics Chemistry And Biology

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Author : David D. Fang
language : en
Publisher: Springer
Release Date : 2018-11-09

Cotton Fiber Physics Chemistry And Biology written by David D. Fang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-09 with Science categories.

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.

Genetics And Cytology Of Cotton 1956 67

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Author :
language : en
Publisher:
Release Date : 1968

Genetics And Cytology Of Cotton 1956 67 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Agriculture categories.

Inheritance Of Fiber Strength And Fiber Elongation In Upland Cotton And Their Relation To Each Other

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Author : Mabrouk Abdel-Salam El-Sharkawy
language : en
Publisher:
Release Date : 1962

Inheritance Of Fiber Strength And Fiber Elongation In Upland Cotton And Their Relation To Each Other written by Mabrouk Abdel-Salam El-Sharkawy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Cotton categories.

Inheritance Of Fiber Strength And Fiber Elongation In F3 Of A Cross Between Two Varieties Of Upland Cotton

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Author : Hosni Abdel-Khalek Abdel-Nabi
language : en
Publisher:
Release Date : 1965

Inheritance Of Fiber Strength And Fiber Elongation In F3 Of A Cross Between Two Varieties Of Upland Cotton written by Hosni Abdel-Khalek Abdel-Nabi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Cotton categories.

Use Of Primitive Accessions Of Cotton As Sources Of Genes For Improving Yield Components And Fiber Properties

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Author : Jack C. McCarty
language : en
Publisher:
Release Date : 2003

Use Of Primitive Accessions Of Cotton As Sources Of Genes For Improving Yield Components And Fiber Properties written by Jack C. McCarty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Cotton categories.

Inheritance Of Cotton Fiber Length And Strength

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Author : Kolbyn Seth Joy
language : en
Publisher:
Release Date : 2015

Inheritance Of Cotton Fiber Length And Strength written by Kolbyn Seth Joy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

The U.S. cotton industry has become predominantly an export market which requires a higher standard of fiber quality than does the domestic market. To remain competitive, U.S. cotton must meet the quality standards demanded by the consumers of raw cotton whether domestic or abroad. Diallel and generation means analyses (GMA) were conducted on fiber quality data of nine and five parental genotypes, respectively, to gain a better understanding of the genetic control of cotton fiber length and strength as well as to ascertain the value of the reported genotypes toward the improvement of fiber quality. Parental genotypes included extra-long staple uplands (Gossypium hirsutum, L.), EMS mutated uplands, high strength uplands, and interspecific hybrids. General combining ability (GCA) and specific combining ability (SCA) were estimated according to Griffing's diallel Model I, Method 4 for lint percent, high volume instrument (HVI) upper half mean length (UHML), fiber bundle strength (Str), uniformity index, elongation, micronaire, advanced fiber information system (AFIS) upper quartile length on a weight basis, mean length on a number basis, short fiber content on a number basis, immature fiber content, maturity ratio, and standard fineness. Estimates of GCA were significant across environments for all traits. SCA effects were significant for most traits but accounted for a smaller proportion of the variability in comparison to GCA effects. TAM B182-33 ELS would be the parent of choice to simultaneously improve fiber length and Str. The GMA was conducted on the parental, F1, F2, and backcross generations. Low levels of transgressive segregation for both UHML and Str were observed for some populations. Broad sense heritability ranged from 0.00 to 0.67 for UHML and from 0.22 to 0.82 for Str. Additive gene action was significant for all but three parental combinations for UHML and for all parental combinations for Str. Generally, the significance and magnitude of additive genetic effects were more consistent among parental combinations and years than were non-additive genetic effects for both UHML and Str. Dominance and epistatic genetic effects often were of a greater magnitude than additive genetic effects but in an inconsistent manner, and in both positive and negative directions. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/152743