scholarly journals Assessment of genetic variability and correlation analysis of seed and seed cotton yield attributing traits of tetraploid cotton genotypes (G. hirsutum L.)

2017 ◽  
Vol 8 (4) ◽  
pp. 1275
Author(s):  
K. Rathinavel ◽  
H. Kavitha ◽  
C. Priyadharshini
Keyword(s):  
Genetic Variability ◽  
Correlation Analysis ◽  
Tetraploid Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Cotton Genotypes

scholarly journals Determination of Tolerance Levels of Cotton Genotypes Obtained from F6-F7 Generation against Verticillium Wilt Disease Caused by Verticillium dahliae Kleb.

2013 ◽  
Vol 41 (1) ◽  
pp. 184
Author(s):  
Oktay EROÄžAN ◽  
Emine KARADEMIR ◽  
Çetin KARADEMIR ◽  
Aydın UNAY
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Fiber Strength ◽  
Disease Index ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Breeding Lines ◽  
Seed Cotton Yield ◽  
Cotton Genotypes ◽  
Verticillium Dahliae Kleb

The susceptibility of cotton genotypes obtained from F6 and F7 generations to Verticillium wilt (VW) disease (Verticillium dahliae Kleb.), was studied under artificial and natural infestation during 2009 and 2010 growing seasons at the Cotton Research Institute’s, Nazilli, Aydın, Turkey. In this study, fifteen cotton breeding lines and two control varieties were used as plant material. During the cotton growing season, foliar disease index (FDI), vascular disease index (VDI) and pot disease index (PDI) were observed in addition to seed cotton yield and some fiber quality characteristics. According to the obtained results, disease severity (DS) values observed in pot experiments were higher than field trials. In terms of DS, ‘Tamcot CD3H’ × ‘Tamcot Luxor-III’, ‘Maraş92’ × ‘Tamcot Sphinx’ and ‘Sayar 314’ × ‘Stoneville 453-I’ breeding lines exhibited similar values with tolerant ‘Carmen’ variety. ‘Tamcot CD3H’ × ‘Tamcot Sphinx’, ‘Sayar 314’ × ‘Stoneville 453-I’, ‘Sayar 314’ × ‘Stoneville 453-II’ and ‘Stoneville 453’ × ‘Tamcot Sphinx’ breeding lines which gave similar DS values with tolerant ‘Carmen’ variety were statistically on the same group with ‘Carmen’ variety suitable to seed cotton yield. In this study, the disease tolerant breeding lines had higher fiber strength values than susceptible lines, the lowest fiber strength value obtained from ‘Cukurova 1518’ susceptible variety.

scholarly journals Genetic variability and association between oil and economic traits for some new Egyptian cotton genotypes

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Sara E. I. Eldessouky ◽  
A. B. A. El-Fesheikawy ◽  
K. M. A. Baker
Keyword(s):  
Oil Content ◽  
Agricultural Research ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Breeding Programs ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
Cotton Genotypes ◽  
Seed Index

Abstract Background Cotton breeding programs mainly focus on improving cotton fibers, but less attention has been paid by breeders to cottonseed oil improvement. Breeding cottonseed for oil content has mainly depended on phenotypic information used to select varieties with high seed oil content. The purpose of this study was to evaluate some cotton genotypes regarding their oil content and other characters related to fiber yield, in order to select genotypes with high oil content and acceptable levels of the other characters. Seventeen different genotypes of cotton were used in this study. A two-year experiment was carried out at Sids Agricultural Research Station, Beni Suef, Egypt, during 2017 and 2018, using a randomized complete block design with six replications. Seed cotton yield, lint cotton yield, boll weight, seed index, embryo index, oil % and embryo oil index characters were recorded. Results The analysis of variance results showed highly significant differences among the genotypes for all the studied traits except boll weight in season 2017. The overall cotton embryo oil % ranged from 33.40 to 40.28 among the genotypes, while the overall cotton embryo oil index ranged from 1.79 to 2.47. Maximum cotton embryo oil % was noted by the genotypes 15 [{(G83 × G80) × G89} × Australian] and 8 [(G 91 × G90) × (G 85 × G 83)], while maximum cotton embryo oil index was noted by the genotype 13 [(G 91 × G 90) × G80]. The results showed positive correlations between seed cotton yield and lint cotton yield, seed index and embryo index, seed index and embryo index oil %, embryo index and embryo index oil %, and oil % and embryo index oil %. Conclusions It could be concluded that using seed or embryo oil percentages as criteria for differentiating genotypes according to their oil content is misleading and the best efficient measure is using the seed or embryo oil indices because they depend on weight basis. Also, Genotypes 13, 15 and 8 were the best genotypes regarding oil % and they could be used in breeding programs for cotton oil improvement.

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 Genetic Variability Estimation and Frequency of Superior Progenies in Advance Breeding lines in desi cotton at two locations

2015 ◽  
Vol 10 (1) ◽  
pp. 313-317
Author(s):  
Bangaremma Wadeyar ◽  
T Kajjidoni
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Agricultural Research ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
Seed Index

Two hundred and two progenies were evaluated at two locations viz., Agricultural Research Station, Annigeri and Main Agricultural Research Station, Dharwad to estimate genetic variability and to identify superior progenies for seed cotton yield, yield contributing and fibre quality traits. The analysis of variance revealed presence of sufficient variability in the material for seven traits at both locations. High phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were recorded for number of bolls per plant and seed cotton yield per plant, while, moderate variability estimate was recorded for plant height and low PCV and GCV were noticed for boll weight, ginning out turn, seed index and lint index traits at both the locations. High heritability was observed for seed index exhibited 97 per cent with moderate genetic advance as percent mean (GAM) at both the locations. High GAM was observed for number of bolls per plant, seed cotton yield and plant height. Moderate GAM was noticed for boll weight and seed index traits at both locations. An attempt was made to identify superior progenies, maximum number of superior progenies were observed for seed cotton yield at Dharwad (33 progenies) followed by Annigeri (24 progenies).

scholarly journals GENOTYPE-ENVIRONMENT INTERACTION IN YIELD OF HILL COTTON GENOTYPES

2017 ◽  
Vol 30 (2) ◽  
pp. 35-40 ◽  
Author(s):  
K. M. Dewan ◽  
M. S. R. Bhuiyan ◽  
M. G. Robbani ◽  
M. Sonom
Keyword(s):  
Lint Yield ◽  
Environment Interaction ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Genotype Environment Interaction ◽  
Boll Weight ◽  
Two Factors ◽  
Cotton Genotypes ◽  
Effect On Yield

Stability analysis helps in understanding the adaptability of genotypes over different environmental conditions and the identification of adaptable genotypes. The experiment was conducted at the Chittagong Hill Tracts (CHT) areas of Bangladesh i.e. Bandarban, Rangamati and Khagrachari during May to September 2014 to study the genotype environment interaction effect on yield of some selected hill cotton genotypes. The experiment consisted of two factors: Factor A: Location (3 locations) - L1: Bandarban; L2: Rangamati and L3: Khagrachari; Factor B: Different cotton genotypes G1: HCG-4; G2: HCG-13, G3: HCG-15, G4: HCG-21, G5: HCG-26, G6: HCG-42, G7: HCG-51 and V8: HC-1 (Check).  In case of location environment, the maximum boll per plant was recorded from Bandarban (19.13). The highest single boll weight was recorded from Bandarban (4.65 g). The highest seed cotton yield per hectare was recorded from Bandarban (1825 kg). The highest lint yield per hectare was recorded from Khagrachari (809 kg). For genotypes, maximum boll per plant (24.61), single boll weight (5.18 g), seed cotton yield per hectare (2170 kg) and lint yield per hectare (927 kg) was observed in HCG-13. In case of interaction of environments and genotypes, highest boll per plant (27.03), single ball weight (5.29 g), seed cotton yield per hectare (2170 kg), lint yield per hectare (981 kg) was observed in HCG-13 at Bandarban than the Rangamati and Khagrachari. Based on performance of eight genotypes HCG-13 followed by HCG-21 and HCG -42 was found to be highest yielder.Genotype HCG-13 was found highest yielder than the other genotypes and showed better performance at Bandarban than the Rangamati and Khagrachari.

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