scholarly journals Suitability of Pedigree Method for Improving Seed Cotton Yield and Fiber Quality Traits

2021 ◽  
Author(s):  
Abia Younas ◽  
Farrukh Illahi ◽  
Ghulam Sarwar ◽  
Iram Sharif ◽  
Shahid Munir Chohan
Keyword(s):  
Correlation Analysis ◽  
Gene Action ◽  
Fiber Quality ◽  
Phenotypic Variance ◽  
Genetic Advance ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Genotypic Variance ◽  
Seed Cotton Yield ◽  
High Heritability

Abstract Background: Cotton is grown around the globe for its fiber, which consists of unicellular seed trichome. Converging decent fiber quality and good fiber yield in cotton varieties is crucial for textile industry of any country. Pedigree method is mostly used for developing cotton varieties in Pakistan. Suitability of pedigree method for developing cotton variety is accessed in an experiment. Genotypic variance, phenotypic variance, heritability, co-heritability, genetic advance, mean comparison and correlation analysis was carried out of nine breeding lines of in fifth filial generation. Gene action was thus determined to target the traits for further yield and quality improvement of cotton fiber. Results: Substantial genetic variability existed in F5 lines. Genotypic and phenotypic variances had less differences and phenotypic variances were higher than genotypic variance indicating influence of environment on the final expression of the traits. All traits had medium to high heritability. Seed cotton yield per plant came up with high genetic advance and high heritability indicating additive gene action and can be improved by selection. Mean comparison indicated more variation for GOT% compared to other traits. Correlation analysis indicated selecting more sympodial branches for improving seed cotton yield per plant and selecting more monopodial branches for improving fiber fineness and fiber length. However, co-heritability had high value indicating that all the traits are in balance for improvement. Conclusion: Pedigree method is suitable for improving seed cotton yields and fiber quality. However, statistical check points are recommended with each proceeding generation to apply suitable selection pressure and monitor the gene action for each trait in each generation.

scholarly journals Selection of Genotypes and Contributing Characters to Improve Seed Cotton Yield of Upland Cotton (Gossypium hirsutum L.)

2020 ◽  
pp. 31-41
Author(s):  
M. M. A. Ali ◽  
S. Kundu ◽  
M. F. Alam ◽  
B. K. Biswas ◽  
M. Hasanuzzaman
Keyword(s):  
Correlation Coefficient ◽  
Upland Cotton ◽  
Main Stem ◽  
Research Centre ◽  
Genetic Advance ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
High Heritability

The experiment was conducted at Cotton Research Centre, Chowgacha, Jessore during 2015-2016 with twenty genetically diverged genotypes, with a view to select desirable genotypes and important characters enhancing seed cotton yield in upland cotton. The experiment was laid out in RCBD with three replications. The unit plot size was 4.5 m x 4.5 m and the spacing, 45 cm ×90 cm. Data were recorded from randomly selected ten plants on monopodial branches plant-1, primary sympodial branches plant-1,secondary sympodial branches plant-1, main stem nodes plant-1, days to 1st (5%) flowering, days to 1st boll splitting, bolls plant-1, single boll weight (g), unburst bolls plant-1, plant height (cm), seeds boll-1, seed cotton yield (kg ha-1). The genotype JA-08/D produced the highest seed cotton yield (3430 kg ha-1) followed by two genotypes JA-08/C (3329 kg ha-1) and JA-08/E (3226 kg ha-1). Though high heritability (90.36-97.46%) were estimated for four characters but high heritability along with high genetic advance values were observed for bolls plant-1, boll weight and seeds boll-1. The moderate heritability (83.58%) with high genetic advance (48.54%) suggests seed cotton yield is controlled by additive and non-additive genetic factors. In general, genotypic correlation coefficient was higher than corresponding phenotypic correlation coefficient due to inherent potential of the genotypes for expressing the individual characters. However, six characters, secondary sympodial branches plant-1, main stem nodes plant-1, days to 1st flowering, bolls plnat-1, boll weight and seeds boll-1 showed positive and significant association. Upon partitioning the correlation coefficients of seed cotton yield with other characters confirmed significant contribution of three characters like bolls plant-1, boll weight and seeds boll- 1. Therefore, three genotypes, JA-08/D, JA-08/C and JA-08/E and three characters, bolls plant-1, boll weight and seeds boll- 1 may be considered by the breeders for improving seed cotton yield in upland cotton.

scholarly journals Generation Mean Analysis for Yield and Its Component Traits in Diallel Population of Cotton (Gossypium hirsutum L.)

2020 ◽  
Author(s):  
Jaya Parkash Yadav ◽  
R. K. Giri ◽  
S. K. Verma
Keyword(s):  
Gossypium Hirsutum ◽  
Gene Action ◽  
Dominant Gene ◽  
Genetic Advance ◽  
Cotton Yield ◽  
Generation Mean Analysis ◽  
Seed Cotton ◽  
Narrow Sense Heritability ◽  
Gene Effects ◽  
Seed Cotton Yield

Background: The nature and magnitude of gene action decides the choice of breeding procedure for achieving desired genetic improvement in any crop. It is particularly important to have an idea of gene interactions for getting genetic advance for polygenic traits such as yield and fiber traits in cotton. Method: The current study was undertaken to investigate the gene action controlling yield and components traits in eight Gossypium hirsutum varieties by using means of the six generations (P1, P2, F1, F2, BC1 and BC2) of 8 x 8 diallel crossing program. The mean of the crosses for the traits in each generation were used for generation mean analysis. Conclusion: Results revealed that the estimated mean effects (m) were highly significant for all traits, indicating quantitative inheritance of these traits. Out of the seven traits under study five traits showed significance for at least one scaling test. Additive and dominant gene effects were significant for seed cotton yield and number of monopods with larger magnitude of dominance effects than additive ones. Dominance, additive x dominance and dominance x dominance were significant for boll weight, number of monopods, seed cotton yield and seed index. Narrow-sense heritability and genetic advance were found low for most of the traits.

scholarly journals An In-Depth Review of Flavonoid Profile in Cotton (Gossypium hirsutum L.)

2021 ◽  
Vol 9 (3) ◽  
pp. 217-223
Author(s):  
T. T. Surya ◽  
Keyword(s):  
Significant Variation ◽  
Selection Process ◽  
Block Design ◽  
Genetic Advance ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Gossypium Hirsutum L ◽  
Randomized Block Design ◽  
High Heritability ◽  
Experiment Analysis

The present Investigation was carried out to study the variability, heritability and genetic advance in desi cotton. The material was evaluated in a Randomized Block Design (RBD) with three replications during kharif 2019. In this experiment analysis of variance indicated that significant variation present among the accessions of the desi cotton for all the traits under study. The highest genotypic (GCV) and phenotypic coefficient of variation (PCV) were exhibited by the number of bolls per plant. High heritability with high genetic advance was observed in number of bolls per plant, the number of monopodia per plant, lint index, seed cotton yield per plant and number of sympodia per plant. The combination of the high heritability and high genetic advance provide the clear image of the trait in the selection process.

Growth Analysis of Cotton in Competition with Velvetleaf (Abutilon theophrasti)

2016 ◽  
Vol 30 (1) ◽  
pp. 123-136 ◽  
Author(s):  
Xiaoyan Ma ◽  
Jinyan Yang ◽  
Hanwen Wu ◽  
Weili Jiang ◽  
Yajie Ma ◽  
...  
Keyword(s):  
Field Experiments ◽  
Fiber Quality ◽  
Dry Weight ◽  
Growth And Yield ◽  
Effective Management ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Weed Density ◽  
Seed Cotton Yield ◽  
The Relationship

Field experiments were conducted in 2013 and 2014 to determine the influence of velvetleaf densities of 0, 0.125, 0.25, 0.5, 1, 2, 4, and 8 plants m−1of row on cotton growth and yield. The relationship between velvetleaf density and seed cotton yield was described by the hyperbolic decay regression model, which estimated that a density of 0.44 to 0.48 velvetleaf m−1of row would result in a seed cotton yield loss of 50%. Velvetleaf remained taller and thicker than cotton throughout the growing season. Both cotton height and stem diameter reduced with increasing velvetleaf density. Moreover, velvetleaf interference delayed cotton maturity, especially at velvetleaf densities of 1 to 8 plants m−1of row, and cotton boll number and weight, seed numbers per boll, and lint percentage were also reduced. Fiber quality was not influenced by weed density when analyzed over 2 yr; however, fiber length uniformity and micronaire were adversely affected in 2014. Velvetleaf intraspecific competition resulted in density-dependent effects on weed biomass, ranging from 97 to 204 g plant−1dry weight. Velvetleaf seed production per plant or per square meter was indicated by a logarithmic response. At a density of 1 plant m−1of cotton row, velvetleaf produced approximately 20,000 seeds m−2. The adverse impact of velvetleaf on cotton growth and development identified in this study have indicated the need for effective management of this species when the weed density is greater than 0.25 to 0.5 plant m−1of row and before the weed seed maturity.

scholarly journals IMPROVEMENT OF COTTON YIELD AND FIBER QUALITY PARAMETERS IN UPLAND COTTON (GOSSYPIUM HIRSUTUM L.) GENOTYPES THROUGH CHEMICAL MUTAGEN

2020 ◽  
Vol 36 (1) ◽  
pp. 8-12
Author(s):  
Z. A. Deho ◽  
S. Abro ◽  
M. Rizwan
Keyword(s):  
Plant Height ◽  
Fiber Length ◽  
Fiber Quality ◽  
Chemical Mutagen ◽  
Parental Line ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Higher Plant ◽  
Seed Cotton Yield ◽  
Mutant Lines

Eight mutant lines developed through mutation breeding technique using chemical mutagen along with parent line (Sadori) were evaluated at NIA, experimental farm. Quantitative and qualitative traits were analyzed statistically. The chemical mutagen Ethyle Methane Sulphonate (EMS) was used at the rate of 0.03%. The mutant lines (viz. NIA-M5, NIA-M10, NIA-M16, NIA-M20, NIA-M23, NIA-M29, NIA-M33 and NIA-M35) with parent Sadori were included in this study. The results revealed that three mutants (NIA-M20, NIA-M35 and NIA-M5) took (7.2%, 8.1% and 8.1%) higher plant height than parent (111 cm), two mutants (NIA-M5 and NIA-M20) obtained (36.8% and 42.1%) more sympodial branches plant-1 than parent (19.0). Three mutants (NIA-M20, NIA-M5 and NIA-M10) produced (16.8%, 22.4.0% and 25.4%) more number of bolls plant-1 than parental line (67.0). Five mutants (NIA-M5, NIA-M35, NIA-M20, NIA-M23 and NIA-M29) had higher fiber length (mm) (10.2%, 8%, 5.7%, 5% and 4.0%) as compared parent Sadori (28.0 mm). Two mutants (NIA-M20 and NIA-M29) showed higher fiber strength (g/tex) (5.5% and 8.3%) than parent (34.4%). Two mutants (NIA-M5 and NIA-M20) produced higher seed-cotton yield kg ha-1 (24.0% and 25.4%) over parent Sadori (3563 kg ha-1). The selected mutant lines on the basis of higher seed-cotton yield (kg ha-1) and enhanced fiber length (mm) compared to parent (Sadori) will be promoted in preliminary yield trials. Heritability and genetic advance were noted for early days to maturity, higher plant height (cm), sympodial branches plant-1, lengthy fiber (mm), bolls plant-1 and seed-cotton yield (kg ha-1).

scholarly journals Assessment of gene action and combining ability for fibre and yield contributing trais in interspecific and intraspecific hybrids of cotton

2018 ◽  
Vol 54 (No. 2) ◽  
pp. 71-77 ◽  
Author(s):  
S. Munir ◽  
M.K. Qureshi ◽  
A.N. Shahzad ◽  
H. Manzoor ◽  
M.A. Shahzad ◽  
...  
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Additive Gene Action ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
Additive Gene ◽  
Seed Index ◽  
Staple Strength

Combining ability analysis was performed in order to identify high-yielding genotypes and hybrids. Six lines were crossed with three testers using a line × tester mating design. General combining ability (GCA) of parents, specific combining ability (SCA) of hybrids and gene action for several yield components and fibre were studied in the experiment. Additive gene action was observed in most traits except bolls/plant, sympodia/plant, monopodia/plant, total nodes, seed index, lint/seed, staple strength and seed cotton yield/plant which were influenced by non-additive gene action. GCA revealed that Giza-7 was a good general combiner for staple length, staple strength, seed index, boll weight, bolls/plant and monopodia/plant and BH-167 was good for ginning outturn (GOT) and sympodia/plant. Results of SCA values for hybrids indicated, that the cross Giza-7 × MNH-886 was a superior specific combiner for staple length, monopodia/plant, staple strength and seed cotton yield/plant; CIM-554 × CIM-557 for boll weight, sympodia/plant and lint weight/boll; BH-167 × MNH-886 for GOT and bolls/plant. Selection of such hybrids and good general combiners could be further exploited for yield improvement.

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