A Comparison Between RAPD and Phenotypic Analyses on 24 Cotton Genotypes
By Muhammad Naveed Arshad on Dec 21, 2018

WCRC WCRC2 Breeding

ABSTRACT Knowledge of genetic distances among individuals or populations in plant breeding programmes can be used to complement phenotypic information in choosing individuals to use in breeding for populations with high genetic variability. Random Amplified Polymorphic DNA (RAPD) techniques may be advantageous in studies of genetic relationships....

Introgression of Pigment Gland Morphogenisis Delay into Upland Cotton: Potential of DNA Markers to Monitor Parental Contribution to Progenies
By Muhammad Naveed Arshad on Dec 21, 2018

WCRC WCRC2 Breeding

ABSTRACT The delay of pigment gland morphogenisis in the seed confers to several Australian wild diploid cottons the glandless-seed/glanded-plant trait. To introgress this trait from G. sturtianum Willis (2m = 2x = 26, 2C1 genome) into G. hirsutum L. (2n = 4x = 52, 2(AD)1 genome), we used bridge crosses to synthesize two trispecies hybrids, G. hir...

Genetics of Yield and its Contributing Traits in Upland Cotton
By Muhammad Naveed Arshad on Dec 21, 2018

WCRC WCRC2 Breeding

ABSTRACT Line x tester analysis involving three males (testers) and fourteen females (lines) with adaptable and broad genetic base was conducted for yield and its contributing traits in upland cotton. Additive genetic variance and non-additive genetic variance primarily controlled seed cotton yield and lint index. Boll number, boll weight and ginn...

JCR-Cotton High Speed Phenotyping Thematic Series Call For Paper
By Quanyi LIU on Dec 21, 2018

Breeding & Genetic improvement Weed control Measurement classing Disease control Crop Protection Agronomy & physiology Biotechnology Sustainability Post Harvest Pest control Environment Breeding JCR

Journal of Cotton Research Cotton High Speed Phenotyping Thematic Series Call For Paper Coordinator: Professor Eric F. Hequet, Texas Tech University, USA; Dr. Glen Ritchie, Texas Tech University, USA Author's allowance: The sponsor, Institute of Cotton Research, CAAS, grants to cover not only APC for the submission, but also the author's al...

Genetic diversity and population structure of Gossypium arboreum L. collected in China
By Quanyi LIU on Dec 20, 2018

Breeding & Genetic improvement Biotechnology Agro-physio-Asia Cotton Genome

[Background] Gossypium arboreum is a diploid species cultivated in the Old World. It possesses favorable characters that are valuable for developing superior cotton cultivars. [Method] A set of 197 Gossypium arboreum accessions were genotyped using 80 genome-wide SSR markers to establish patterns of the genetic diversity and population structure...

Map-based cloning of a recessive gene v1 for virescent leaf expression in cotton (Gossypium spp.)
By Quanyi LIU on Dec 20, 2018

Breeding & Genetic improvement Biotechnology Agro-physio-Asia Breeding JCR

[Background] Virescence, as a recognizable phenotype in the early development stage of cotton, is not only available for research on chloroplast development and photosynthesis but also for heterosis exploitation in cotton. [Methods] In current study, for fine mapping of virescent-1 (v1) in cotton, three populations with a total of 5 678 individu...

Identification and screening of nitrogen-efficient cotton genotypes under low and normal nitrogen environments at the seedling stage
By Quanyi LIU on Dec 20, 2018

Agro-physio-Asia JCR

[Background] Large quantities of nitrogen (N) fertilizer applied to cotton cropping systems support high yields but cause adverse environmental impacts such as N2O emission and water eutrophication. The development of cotton cultivars with higher N use efficiencies suitable for low-N conditions is therefore important for sustainable production. In...

Analysis of short fruiting branch gene and Marker-assisted selection with SNP linked to its trait in upland cotton
By Quanyi LIU on Dec 19, 2018

Breeding & Genetic improvement Biotechnology Agro-physio-Asia Cotton Genome Breeding

[Background] With the rapid development of genomics, many functional genes have been targeted. Molecular marker assisted selection can accelerate the breeding process by linking selection to functional genes. [Methods] In a study of upland cotton (Gossypium hirsutum L.), the F2 segregated population was constructed by crossing X1570 (short branc...

The current status of nitrogen fertiliser use efficiency and future research directions for the Australian cotton industry
By Quanyi LIU on Dec 19, 2018

Agronomy & physiology Agro-physio-australia JCR

Fifty years of sustained investment in research and development has left the Australian cotton industry well placed to manage nitrogen (N) fertiliser. The average production in the Australian cotton industry today is greater than two tonnes of lint per hectare due to improved plant genetics and crop management. However, this average yield is well b...

Designations for individual genomes and chromosomes in Gossypium
By Quanyi LIU on Dec 18, 2018

Breeding & Genetic improvement Cotton Genome JCR

Gossypium, as the one of the biggest genera, the most diversity, and the highest economic value in field crops, is assuming an increasingly important role in studies on plant taxonomy, polyploidization, phylogeny, cytogenetics, and genomics. Here we update and provide a brief summary of the emerging picture of species relationships and diversificat...

Genome-wide identification and expression analysis of Gossypium RING-H2 finger E3 ligase genes revealed their roles in fiber development, and phytohormone and abiotic stress responses
By Quanyi LIU on Dec 18, 2018

Breeding & Genetic improvement Biotechnology Breeding JCR

[Background] RING-H2 finger E3 ligase (RH2FE3) genes encode cysteine-rich proteins that mediate E3 ubiquitin ligase activity and degrade target substrates. The roles of these genes in plant responses to phytohormones and abiotic stresses are well documented in various species, but their roles in cotton fiber development are poorly understood. To da...

Genome-wide analysis of Rf-PPR-like (RFL) genes and a new InDel marker development for Rf1 gene in cytoplasmic male sterile CMS-D2 Upland cotton
By Quanyi LIU on Dec 14, 2018

Breeding & Genetic improvement Biotechnology Breeding JCR

[Background] Cytoplasmic male sterility in flowering plants is a convenient way to use heterosis via hybrid breeding and may be restored by nuclear restorer-of-fertility (Rf) genes. In most cases, Rf genes encoded pentatricopeptide repeat (PPR) proteins and several Rf genes are present in clusters of similar Rf-PPR-like (RFL) genes. However, the Rf...

A genome-wide analysis of SWEET gene family in cotton and their expressions under different stresses
By Quanyi LIU on Dec 13, 2018

Breeding & Genetic improvement Biotech-global JCR

[Background] The SWEET (Sugars will eventually be exported transporters) gene family plays multiple roles in plant physiological activities and development process. It participates in reproductive development and in the process of sugar transport and absorption, plant senescence and stress responses and plant-pathogen interaction. However, the comp...

Hypoxia tolerance studies for yield, fiber and physiological traits in cotton (Gossypium hirsutum L.)
By Quanyi LIU on Dec 11, 2018

Agro-physio-Asia Breeding-Asia Breeding JCR

[Background] Hypoxia tolerance studies in cotton are very rare in Pakistan. Unpredicted and excessive rainfalls result in severe losses to cotton crop in many regions of the country due to lack of hypoxia tolerance in current cotton varieties. The genotypes that can tolerate flooding are not reported earlier. The studies were conducted to explore h...

Efficiency of cotton bollworm (Helicoverpa armigera Hübner) control of different Bt cotton varieties in North China
By Quanyi LIU on Dec 11, 2018

Croprotection-Asia JCR

[Background] The cotton bollworm (Helicoverpa armigera) is one of cotton’s most destructive insect pests in terms of yield and quality. Since 1997, China has grown commercially available transgenic Bacillus thuringiensis (Bt) cotton. We aimed to investigate the variation in resistance of transgenic Bt cotton varieties to cotton bollworm in North Ch...

Comparative transcriptome study provides insights into acquisition of embryogenic ability in upland cotton during somatic embryogenesis
By Quanyi LIU on Dec 11, 2018

Biotechnology JCR

[Background] The conversion from non-embryogenic callus (NEC) to embryogenic callus (EC) is the key bottleneck step in regeneration of upland cotton (Gossypium hirsutum), and hinders the transgenic breeding of upland cotton. To investigate molecular mechanisms underlying acquisition of embryogenic potential during this process, comparation analysis...

Genotypic variation in spatiotemporal distribution of canopy light interception in relation to yield formation in cotton
By Quanyi LIU on Dec 10, 2018

Agro-physio-Asia JCR

[Background] Within-canopy interception of photosynthetically active radiation (PAR) impacts yield and other agronomic traits in cotton (Gossypium hirsutum L.). Field experiments were conducted to investigate the influence of 6 cotton varieties (they belong to 3 different plant types) on yield, yield distribution, light interception (LI), LI distri...

Saponin synthesis and cotton growth is antagonistically regulated by solar UV-B radiation
By Quanyi LIU on Dec 9, 2018

Agro-physio-Asia JCR

An article of Journal of Cotton Research has been published online. [Background] Earlier we have reported that the exclusion of solar UV-B increased the growth and yield of cotton plants as compared with ambient UV-B. The UV-B radiation effects on the saponins and the impact of ambient and reduced UV-B on the accumulation of saponins has not bee...

Comparative Efficiency of Three Selection Methods for Yield and Quality of Cotton (Gossypium hirsutum L.)
By Muhammad Naveed Arshad on Nov 2, 2018

WCRC WCRC2 Breeding

ABSTRACT The comparative efficiency of three selection methods, honeycomb pedigree selection (HC), pedigree selection (PS) and single-seed descent (SSD), was assessed in an F2 cotton population in two locations. The best five lines derived by each method in each location after five cycles of selection, along with check varieties were tested in com...

Obtaining Insect-resistant Cotton by Transformation with Agrobacterium
By Muhammad Naveed Arshad on Oct 8, 2018

Biotechnology WCRC WCRC2

ABSTRACT A plant expression vector, pBinLK, carrying two insecticidal genes: pea lectin gene and soybean Kunitz trypsin inhibitor gene, were constructed and successfully transferred into 4 upland cotton (Gossypium hirsutum L.) cultivars, Xinluzao-1, Xinluzhong-2, Jihe-321 and Liao-9 via Agrobacterium-mediated transformation. Hypocotyl segments fro...