Evaluation of Cotton Genotypes for Seed Cotton Yield and Fiber Quality Traits Under Water Stress and Non-Stress Conditions

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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Genetic variability for yield and fiber related traits in genetically modified cotton

Journal of Cotton Research ◽

10.1186/s42397-021-00094-4 ◽

2021 ◽

Vol 4 (1) ◽

Author(s):

Adeela SAHAR ◽

Muhammad Mubashar ZAFAR ◽

Abdul RAZZAQ ◽

Abdul MANAN ◽

Muhammad HAROON ◽

...

Keyword(s):

Plant Height ◽

Coefficient Of Variation ◽

Fiber Quality ◽

Short Fiber ◽

Quality Traits ◽

Cotton Yield ◽

Seed Cotton ◽

Fiber Quality Traits ◽

Seed Cotton Yield ◽

Seed Index

Abstract Background Cotton (Gossypium hirsutum L.) is grown for fiber and oil purposes in tropical and sub-tropical areas of the world. Pakistan is the 4th largest producer of cotton. It has a significant contribution in the GDP of Pakistan. Therefore, the present study was performed to assess the genetic variations and genetic diversity of yield and fiber quality traits in cotton and to analyze the associations present among them. Results Analysis of variance exhibited significant variation for all studied traits except total number of nodes and the height to node ratio. The phenotypic coefficient of variation was higher than the genotypic coefficient of variation for all studied traits. Plant height, monopodial branches, total number of bolls, lint index, seed index, and seed cotton yield displayed high heritabilities in a broad sense with maximum genetic advance. Correlation analysis revealed that seed cotton yield had a significant positive association with plant height, the number of monopodial branches, the number of sympodial branches, ginning outturn (GOT), the number of bolls, seed per boll, seed index, uniformity index, the number of sympodial branches, reflectance, and seed index at the genotypic level while a significant positive relationship was observed with plant height, the number of sympodial branches, boll number, and GOT. Plant height, monopodial branches, GOT, boll weight, seeds per boll, and short fiber index exerted direct positive effects on seed cotton yield. The first 6 principal component analysis (PCs) out of the total fourteen PCs displayed eigenvalues (> 1) and had maximum share to total variability (82.79%). The attributes that had maximum share to total divergence included plant height, uniformity index, the number of sympodial branches, seed per boll, GOT, seed cotton yield, and short fiber index. Conclusion The genotype AA-802, IUB-13, FH-159, FH-458, and CIM-595 were genetically diverse for most of the yield and fiber quality traits and could be utilized for the selection of better performing genotypes for further improvement.

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Microsatellite-based characterization of cotton genotypes for verticillium wilt and fiber quality traits

Turkish Journal of Biochemistry ◽

10.1515/tjb-2017-0169 ◽

2017 ◽

Vol 43 (3) ◽

pp. 277-288

Author(s):

Amna Saeed ◽

Eminur Elçi

Keyword(s):

Genetic Diversity ◽

Ssr Markers ◽

Verticillium Wilt ◽

Fiber Quality ◽

Stress Factors ◽

Quality Traits ◽

Cotton Yield ◽

Fiber Quality Traits ◽

Resistant Cultivars ◽

Cotton Genotypes

Abstract Cotton (Gossypium hirsutum L.) is the most important natural textile fiber crop grown worldwide. Several biotic and abiotic stress factors affect cotton yield due to lower genetic diversity for the traits of particular interest. Verticillium wilt (VW) is one of the major factors incurring huge cotton yield losses. The most effective management option against VW is the development of resistant cultivars. The resistant cultivars must also have superior fiber quality and yield traits. Therefore, the current study was aimed at screening some of the identified simple sequence repeats (SSR) markers for VW resistance and fiber quality traits of cotton genotypes in Turkey. Fifty different cultivars were screened with 30 SSR markers. Polymerase chain reaction (PCR) was conducted to amplify the SSR markers. The amplified bands were scored as 0 or 1 for absence and presence, respectively. For the molecular data analysis, polymorphism information content (PIC) values of molecular markers were calculated. Among tested SSR markers 13 were found polymorphic, which produced a total of 677 loci. The number of alleles per marker ranged from 1 to 4 and, overall average PIC values of markers ranged from 0.00 to 0.76, respectively. Principal component analysis executed on presence absence data yielded two distinct groups of cultivars screened. Hierarchical clustering revealed low genetic diversity among the tested cultivars. Based on the results TamcotCamdES, Gloria, Natalia, Lydia, Teks, Tamcot SP37H, N87 and BA525 are the promising cultivars for further breeding studies. The results of the current study also revealed that 4 SSR markers (DPL752 and DPL322 for fiber traits, DPL0022 and GH215 for VW resistance) out of 30 could be used for improving VW resistance and fiber quality in cotton through marker assisted selection.

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Effects of Water Stress on Vegetative and Reproductive Traits of Three Commercial Cotton Varieties in Field Conditions in Central Iran

10.21203/rs.3.rs-1079809/v1 ◽

2021 ◽

Author(s):

ALI NADERI AREFI ◽

AlIREZA TAVAKOLI

Keyword(s):

Water Stress ◽

Normal Condition ◽

Crop Production ◽

Stress Conditions ◽

Cotton Yield ◽

Seed Cotton ◽

Node Number ◽

Seed Cotton Yield ◽

Water Stress Condition ◽

Cultivar Responses

Abstract Backgroundwater scarcity is one of the most important factors that restricts crop production specially, cotton which must planted in areas without cold temperature limitation. Most of such area in Iran encounters drought events, hot temperatures and high atmospheric evaporative demand. So, understanding of stress severity and cultivar responses will help to better management of crop in stress conditions. Our previous study showed that cultivar responses in view of some physiological and morphological aspects were highly different in water stress condition. In this study we focused on yield formatting traits.Results Three cotton commercial varieties; Khorshid, Khordad and Varamin studied in sever, mild and without water stress. In normal condition zero type cultivar, the khorshid, produced the highest seed cotton yield. Varamin cultivar had more and longer sympodial branches which could raise it’s yield. Also, Varamin cultivar’s seed cotton yield was higher than the others (3617 kg -1 ha compared with 2477 and 3060 for khordad and khorshid, respectively). Khorshid was superior to the others at sever water stress.ConclusionSeed cotton yield showed high correlation whit boll number and boll weight and vegetative aspects such as plant height, node number and sympodial branches number. Management for developing more sympodial branches results in higher bud and flower and will increase the yield. Totally, we recommend Khorshid and Varamin cultivars for normal condition and Khorshid for sever stress conditions.

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Development of superior hybrids for fibre quality based on heterosis and combining ability in upland cotton (Gossypium hirsutum L.)

International Journal of Agricultural Invention ◽

10.46492/ijai/2017.2.2.14 ◽

2017 ◽

Vol 2 (02) ◽

pp. 185-196

Author(s):

Sukhdeep Singh Sivia ◽

S. S. Siwach ◽

O. Sangwan ◽

Sunayana .

Keyword(s):

Combining Ability ◽

Fiber Quality ◽

General Combining Ability ◽

Hybrid Breeding ◽

Quality Traits ◽

Fibre Quality ◽

Cotton Yield ◽

Seed Cotton ◽

Cotton Breeding ◽

Seed Cotton Yield

The cultivated Gossypium spp. represents the most important, natural fibre crop in the world. Breeding for high cotton yield is still the primary goal of cotton breeding programs, but improving fibre quality has become increasingly important. The enhancement of fibre quality traits like fibre length, strength, and fibre fineness is an essential requirement for the modern textile industry. The objective of this study was to facilitate the selection in cotton breeding program and estimate the general combining ability (GCA) of the parents and specific combining ability (SCA) of hybrids considered for the development of high yielding and better fiber quality in early generations. The study was carried out at cotton research area, CCS Haryana Agricultural University, Hisar (India) during 2014 and 2015 kharif season. Fifteen cotton lines (which have maximum diversity) and four testers (which are known as well adapted and high yielding) were crossed in a line x tester mating design in 2014. Nineteen genotypes and 60 F1 hybrids were planted in the randomized complete block design with three replications at the same experimental area in 2015. The ratio of δ2 GCA /δ2 SCA was less than unity for all the nine characters indicating preponderance of non-additive gene action (dominance and epistasis), which is an important in exploitation of heterosis through hybrid breeding. The best general combining ability was detected from the parent H1470 for seed cotton yield, H1464 and H1098-i for fiber quality traits. SCA was significant for AC726 x H1236, ISR12 x H1226, HR1 x H1117 hybrid combinations for yield and fiber quality. The crosses H1470 x H1236 and H1470 x H1098-i were reported good heterosis for seed cotton yield as well as for fibre quality, selected the best hybrids were H1464 x H1098-i and H1463 x H1226. These cross combinations involved at least one parent with high or average GCA effect for a particular trait. The cross combination involving H1470, H1098-i and H1464 parents’ recorded significant positive heterosis with acceptable SCA effect for both yield and fibre quality parameters. This investigation concluded that the parents H1470, H1098-i and H1464 can be used in hybrid development programme with better fibre quality.

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A Line × Tester analysis for some seed cotton yield and fiber quality traits in upland cotton

International Journal of Cotton Research and Technology ◽

10.33865/ijcrt.002.01.0373 ◽

2020 ◽

Vol 2 (1) ◽

pp. 55

Author(s):

Aziz Ullah ◽

Amir Shakeel ◽

Hafiz Ghulam Muhu-Din Ahmed ◽

Muhammad Ali ◽

Muhammad Majid Yar

Keyword(s):

Combining Ability ◽

Fiber Strength ◽

Fiber Quality ◽

General Combining Ability ◽

Cotton Yield ◽

Seed Cotton ◽

Lint Percentage ◽

Fiber Quality Traits ◽

Seed Cotton Yield ◽

Fiber Fineness

The objective of the present study was to estimate general combining ability (GCA) of the parents and specific combining ability (SCA) of crosses for the development of high yielding cotton varieties. The study was carried out at the experimental area of Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad. A line × tester analysis was made to identify the superior general and specific combiners for seed cotton yield and fiber quality traits in upland cotton. Five lines/females (FH-114, FH-1000, CIM-448, CIM-707, NIAB-111) and three testers/males (TH-41-83, Cocker-307 and Allepo-41) were crossed to develop 15 F1 hybrids. These genotypes were evaluated along with parents in RCBD with three replications. The general combining ability (GCA) and specific combining ability (SCA) mean squares for seed cotton yield, lint percentage, fiber fineness, fiber strength and fiber length were significant. The fiber fineness showed greater importance of additive gene effect while seed cotton yield, lint percentage, fiber strength and fiber length exhibited non additive genetic effects. Parents FH-114 and NIAB-111 among lines and COKER-307 from testers were found as good general combiners for most of the traits. Hence, these parents proved worth to be used in hybridization and selection program for extracting desirable plants from segregating population. F1 crosses CIM-707 × COKER-307, CIM-707 × ALLEPO-41 and FH-1000 × COKER-307, by and large, exhibited their superiority for all traits studied and were noted as the best specific combiners. Therefore, these crosses may be preferred to improve several traits simultaneously by selection or may be used for hybrid cotton crop development

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