The F2 populations of the crossings CO 14 × NDLH 1938 and CO17 1755 were used to investigate variability heritability studies in order better understand gene action involved each characteristic studied. Morphological data viz., days first flowering, plant height (cm), number sympodials, bolls per plant, boll weight (g), ginning outturn (%), upper half mean length (mm), elongation percentage (%)...

Cotton is India’s most important cash crop and it used for agricultural industrial purposes all over the world. The greatest way identifying superior hybrids best combiners of parents by L×T design. For analyzing combining ability heterosis various yield attributing variables as well quality traits, viz., four lines testers were crossed to produce sixteen hybrids. MCU5 × KC3 cross contributed p...

Abstract Optimum planting arrangement is an important attribute for efficient utilization of available resources and to obtain high yield cotton. Application plant growth promoter retardant on cotton in improved density are the innovative techniques establishment more productive crop. Therefore, we planned a field study assess role bio-stimulant resource efficiency cultivars planted under varia...

Heat tolerance is a physiologically and genetically complex trait regulated by multiple genes. To investigate the genetic basis of heat tolerance, eight parents (five lines three testers) their fifteen F1 hybrids were evaluated under normal high-temperature stress conditions for two consecutive years. Data recorded plant height, number bolls, boll weight, seed cotton yield, ginning out turn (GO...

Cotton fiber quality is defined by several traits, which are affected by genotype×environment interaction (GEI). The objectives of this work were to study GEI of fiber traits, the repeatability and the effect of the size of testing environments in detecting cultivar genetic differences by High Volume Instrument (HVI), and the usefulness of two GEI derived stability indices, σ2i and GGE Instabil...

Cotton fiber is multigenic trait controlled by number of genes. Previous studies suggest that one of these genes may be responsible for switching cotton fiber growth on and off to influence the fiber quality produced from a cotton seed. In the present study, the Gossypium hirsutum GhEXPA8 fiber expansin gene was introduced into local cotton variety NIAB 846 by using an Agrobacterium-mediated ge...

Fiber quality improvement is a driving force for further cotton domestication and breeding. Here, QTLs for fiber quality were mapped in 115 introgression lines (ILs) first developed from two intraspecific populations of cultivated and feral cotton landraces. A total of 60 QTLs were found, which explained 2.03-16.85% of the phenotypic variance found in fiber quality traits. A total of 36 markers...

It is of significance to discover genes related to fiber quality and yield traits and tightly linked markers for marker-assisted selection (MAS) in cotton breeding. In this study, 188 F8 recombinant inbred lines (RILs), derived from a intraspecific cross between HS46 and MARCABUCAG8US-1-88 were genotyped by the cotton 63K single nucleotide polymorphism (SNP) assay. Field trials were conducted i...

Imposing a moderate level of nutrient deficiency may be an effective management strategy to limit vegetative growth and enhance maturity of Pima cotton (Gossypium barbadense L.). Whether such deficiency affects fiber quality of American Pima cotton, however, is not well known. A field study was conducted in 1991 and 1992 to determine the fiber quality responses of Pima cotton to nitrogen and ph...

Backcrossed chromosome substitution lines (CS-B) have been developed with a homologous pair of chromosomes or chromosome arms of Gossypium barbadense (3-79) germplasm substituted for the homologous Gossypium hirsutum (TM-1) chromosomes or chromosome segments. We report on agronomic and fibre trait performance of four backcrossed chromosome or chromosome arm substitution lines including chromoso...