PERFORMANCE OF EARLY AND LATE MATURING VARIETIES OF COTTON (GOSSYPIUM HIRSUTUM L.) IN THE MARGINAL RAINFALL AREAS OF CENTRAL AND EASTERN KENYA
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-EastSouthAfrica WCRC1

Abstract                                                                         Back to Table of contents A study was carried out to identify a variety of Gossypium hirsutum L. cotton suitable for the bimodal rainfall areas of Central and Eastern Kenya. The two objectives were to identify an early maturing variety that can be grown either in th...

CRYSTALLINITY, CRYSTALLITE SIZE, FINE STRUCTURAL AND PHYSICAL FIBRE PROPERTIES AT TWO FIBRE MATURITY LEVELS IN TWO EGYPTIAN COTTON CULTIVARS
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement Breeding-MedMiddleEast

Abstract                                                                         Back to Table of contents Fibre maturity is an important characteristic of cotton. It affects the yield of lint as well as the quality of cotton fibre. Two ELS Egyptian cotton cultivars, Giza 45 and Giza 77, were used in this study at 65% and 80% fibre maturity leve...

NEW COTTON VARIETIES FOR IPM
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents The major insect pests attacking cotton in the Sudan are the American bollworm, Helicoverpa armigera (HB), jassids, Jacobiasca lybica (De Berg), whitefly, Bemisia tabaci (Genn.) and aphids, Aphis gossypii (Glover). Chemical control is wi...

USE OF MOLECULAR MARKERS IN COTTON BREEDING
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Molecular markers (MM) are a new genetic tool which have the potential to enhance selection efficiency in cotton (Gossypium species) breeding.  There are about 80 morphological traits that have been used to identify 17 linkage groups in G....

NEW HORIZONS IN LINT PERCENTAGE IN PAKISTAN
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Abstract                                                                         Back to Table of contents Cotton is primarily grown for lint which is approximately 35% of the harvested seed cotton (seed and lint).  As a result of plant breeding efforts, this percentage has been increased up to 45% in various parts of the world.  Pakistan inheri...

STUDIES OF QUANTITATIVE CHARACTERS IN UPLAND COTTON
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Abstract                                                                         Back to Table of contents Genetic analysis was performed through sequential model fittings to analyse the variation among generations derived from a cross of two diverse parents Bikaneri Narma and Model for seed cotton yield per plant, number of bolls per plant, bol...

PROGRESS IN GENETIC ENGINEERING OF COTTON FOR FIBER MODIFICATIONS
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Modification of cotton fiber qualities through genetic engineering is the primary focus of the cotton biotechnology program at Agracetus, and the methodologies necessary to accomplish this task have been developed. A cultivar independent (A...

HOST PLANT RESISTANCE TO INSECTS IN COTTON
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Introduction                                                               Back to Table of contents Successful crop management components are built on the cultivar foundation.  Insects are one of the major problems in cotton production and their abundance and species mix influence crop and pest management practices.  Heliothines, mirids, aphids...

LOSS IN SEED COTTON YIELD DUE TO FUSARIUM WILT IN SUDAN GEZIRA
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents Loss in seed cotton (Gossypium barbadense L.) yield, resulting from Fusarium vascular wilt disease (Fusarium oxysporum Schlecht f. sp. vasinfectum (Atk.) Snyd. and Hans), was assessed for three consecutive seasons, on nine cultivars of diff...

PROGRESS WITH VARIETAL IMPROVEMENT IN CIRAD
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-WestCentralAfrica Breeding-LatinAmerica WCRC1

Abstract                                                                         Back to Table of contents CIRAD-CA (formerly IRCT), has participated in cotton research (mainly G. hirsutum) in a number of tropical countries in Africa, Latin America and Asia, for 45 years. Especially in cotton breeding, the work carried out has led to the creatio...

THE HERITABILITY OF YIELD, YIELD COMPONENTS AND FIBRE TECHNOLOGICAL PROPERTIES IN PARTIAL DIALLEL HYBRIDS OF UPLAND COTTON (GOSSYPIUM HIRSUTUM L.) VARIETIES IN SOUTHEASTERN ANATOLIA REGION OF TURKEY
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents This study was conducted on the Fl and the parental genotypes obtained from the partial diallel cross of 12 promising varieties (Gossypium hirsutum L.) with the objectives of creating genetic resources and detecting early varieties with hig...

BREEDING FOR RESISTANCE TO BACTERIAL BLIGHT OF COTTON IN RELATION TO RACES OF THE PATHOGEN
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Bacterial blight of cotton incited by Xanthomonas campestris pv malvacearum (Xcm) occurs in most cotton producing regions of the world.  Bacterial blight causes a 1% yield loss annually in the USA, and more than 50% loss during epidemics in...

AGRONOMIC MANAGEMENT OF EXTRA FINE COTTON FOR HIGHER GRADES IN EGYPT
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1

Introduction                                                               Back to Table of contents Egyptian cotton is the major cash crop of Egypt.  It is the main item affecting the Egyptian economy.  Over two million people are dependent on it for their livelihood.  Cotton is mainly used for clothing.  Its oil and oil seed cake are two by-pr...

INDUCTION OF SOMATIC EMBRYOGENESIS IN A RANGE OF COTTON CULTIVARS
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Diverse genotypes of cotton Gossypium hirsutum L. were evaluated for their capacity to form callus formation and for induction of somatic embryogenesis.  Callus cultures were evaluated from hypocotyl, mesocotyl and cotyledonary leaf explant...

THE AUSTRALIAN WILD SPECIES OF GOSSYPIUM
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-Australia WCRC1

Abstract                                                                         Back to Table of contents Of the 50 species of Gossypium, 17 are endemic to Australia.  These plants are classified in three sections, Sturtia, Hibiscoidea and Grandicalyx, in the endemic subgenus Sturtia.  The first two sections are relatively well‑known through th...

RISK OF ESCAPE OF TRANSGENES FROM COTTON INTO NATURAL POPULATIONS OF AUSTRALIAN GOSSYPIUM SPECIES
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement Biotechnology WCRC Biotech-australia Breeding-Australia WCRC1

Abstract                                                                         Back to Table of contents Two endemic species of wild cotton, Gossypium sturtianum and G. australe, occur near the eastern Australian cotton growing regions. These species can be crossed artificially with cotton (G. hirsutum) and experimental doubling the chromosome...

VOLATILE TERPENES AND TERPENOID ALDEHYDES IN AUSTRALIAN-GROWN GOSSYPIUM HIRSUTUM L. CULTIVARS AND LINES
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-Australia WCRC1

Abstract                                                                         Back to Table of contents Volatile terpenes were assayed in sixteen Gossypium hirsutum L. genotypes, seven of which were also analysed for terpenoid aldehydes. Consistent with previous studies, the major volatile terpenes detected were trans-b-caryophyllene, b-bisab...

MECHANISMS OF DISEASE RESISTANCE IN GOSSYPIUM SPECIES AND VARIATION IN VERTICILLIUM DAHLIAE
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Introduction                                                                Back to Table of contents Studies on Verticillium wilt of cotton have concentrated on host resistance to the pathogen and on genetic variation and mechanisms of virulence in Verticillium dahliae.  The resistance of cotton to V. dahliae depends on a number of anatomical a...

HYBRID COTTON RESULTS AND PROSPECTS
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Abstract                                                                         Back to Table of contents Hybrid 4 ushered in the era of hybrid cotton in India in the 1970s.  Hybrids both intra and interspecific now occupy about 28% of the cotton area and contribute about 42% of production of the country.  Inspired by the unique success of hybr...

QUALITY ASSESSMENT FOR BREEDING EGYPTIAN HIGH QUALITY COTTON VARIETIES
By Michel Fok on Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents The cotton breeding program in Egypt has developed over a long time.  Strong emphasis has always been put on quality and a good deal of improvement  with  yield potential and agronomic characters. Methods of quality measurement and  eval...