Optimal irrigation amount and nitrogen rate improved seed cotton yield while maintaining fiber quality of drip-fertigated cotton in northwest China

2021 ◽  
Vol 170 ◽  
pp. 113710
Author(s):  
Xianghao Hou ◽  
Junliang Fan ◽  
Wenhui Hu ◽  
Fucang Zhang ◽  
Fulai Yan ◽  
...  
Keyword(s):  
Fiber Quality ◽  
Northwest China ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Nitrogen Rate ◽  
Irrigation Amount ◽  
Seed Cotton Yield

scholarly journals Soil applied potassium improves productivity and fiber quality of cotton cultivars grown on potassium deficient soils

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250713
Author(s):  
Shabir Hussain ◽  
Hakoomat Ali ◽  
Syed Tahir Raza Gardezi
Keyword(s):  
Growth Parameters ◽  
Abiotic Factors ◽  
Fiber Quality ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
K Fertilizer ◽  
Improper Use

Cotton (Gossypium hirsutum L.) is considered as the most valuable cash crop of Pakistan. During last decade, its yield has been declined due to various biotic and abiotic factors. Among abiotic factors, improper use of fertilizers is considered very important specially regarding plant defense and yield. This study was conducted to evaluate the effect of different levels (0, 40, 80 and 120 kg ha-1) of K fertilizer (K2O) on different growth parameters of two commercial Bt cotton cultivars (CYTO-301 and IUB-2013) and one non-Bt cultivar (CYTO-142) during 2016 and 2017. Maximum plant height (124–134 cm), dry matter contents (915–1005%), fruiting point (441–462), bolls per plant (96–139), average boll weight (4.2–5.2 g) and seed cotton yield (2524–3175 kg ha-1) and minimum shedding (43–73%) were observed in plots receiving highest dose of K (120 kg ha-1). The CYTO-103 cultivar was found more responsive to K fertilizer as compared to rest of cultivars (CYTO-142 and IUB-2013). Concluding, ideal dose of fertilizer is very important (120 kg ha-1 in our case) for optimum growth and production of good quality fiber with enhanced seed cotton yield.

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 Breeding assessment of new promising cotton lines

2021 ◽  
Vol 13 (3) ◽  
pp. 234-239
Author(s):  
V. Dimitrova ◽  
R. Dragov
Keyword(s):  
Fiber Quality ◽  
The State ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Lint Percentage ◽  
Breeding Programs ◽  
Fiber Properties ◽  
Remote Hybridization ◽  
Variety Testing

Abstract. Cotton breeding in Bulgaria is mainly aimed at improving the earliness, productivity and fiber quality of modern varieties. The creation of new genetic diversity is one of the basic prerequisites for the success of breeding programs. The aim of the study was to evaluate cotton lines obtained by intraspecific and remote hybridization combined with backcross technology, with a view to their most effective usage in selection. Twenty-three lines were included in competitive variety trials conducted during the 2014-2017 period. The averaged results showed that lines 550, 639, 641, obtained by remote hybridization, appeared to be very promising. These three lines were distinguished by the best combination of productivity, fiber length and fiber lint percentage, and by these three indicators they exceeded the standard variety Chirpan-539. A new cotton variety Aida (No. 457) was approved, which in seed cotton yield and fiber yield, and technological fiber properties surpassed the standard varieties Chirpan-539 for earliness and productivity and Avangard-264 for fiber quality. The candidate variety 535 continued the state variety testing. Two new candidate cotton varieties No. 550 and No. 553 were released. In the state variety testing the three candidate varieties confirmed their qualities. The obtained lines, distinguished by one trait or by a complex of qualities, enriched the gene pool of Bulgarian cotton.

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.

Heterosis studies for yield and fiber quality traits in intra hirsutum hybrids of cotton (Gossypium hirsutum L.)

2015 ◽  
Vol 35 (4) ◽  
Author(s):  
B. Srinivas ◽  
D. Bhadru
Keyword(s):  
Fiber Quality ◽  
Quality Traits ◽  
Span Length ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Fiber Quality Traits ◽  
Seed Cotton Yield ◽  
Standard Heterosis ◽  
Good Number ◽  
Heterosis Breeding

The present study was performed to evaluate the heterosis effects for seed cotton yield and fiber quality traits of 56 hybrids and their parents involving seven lines and eight testers along with a check at Acharya N.G. Ranga Agricultural University, Hyderabad. The results showed that, range of relative heterosis varied from -3.40 to 13.29 in ginning percentage, -5.28 to 14.10 in 2.5% span length, -8.72 to 8.25 in uniformity ratio, -16.39 to 14.88 in micronaire value, -5.97 to 10.02 in bundle strength and -32.57 to 113.40 in seed cotton yield per plant, where, highest number of crosses (24) with significant mid parental heterosis in desirable direction was observed for seed cotton yield per plant followed by 2.5 % span length (16) and ginning percentage (12). Desirable and significant heterosis over better parent was observed in the crosses for all the studied characters except for uniformity ratio. A good number of crosses recorded significant standard heterosis over check for all the studied parameters except for uniformity ration and micronaire value. Apart from showing considerable level of heterosis for seed cotton yield, the crosses AKH 9331 x HAG 1055 exhibited good level of heterosis for ginning percentage, Galama x L 604 and Galama x JK 344 for uniformity ratio, Galama x HAG 1055, AKH 9331 x HAG 1055 and CPD 420 x IC 356932 for 2.5% span length and CPD 420 x JK 344 and BC 68-2 x LK 861 for bundle strength. So these crosses could be exploited to improve the yield along with one or more fiber quality traits through heterosis breeding.

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