scholarly journals Genetic Variability, Heritability and Correlation Studies in F2 Populations of Upland Cotton

2018 ◽  
Vol 61 (3) ◽  
pp. 136-144
Author(s):  
Muhammad Jurial Baloch ◽  
Rehana Lochi ◽  
Wajid Ali Jatoi ◽  
Abdul Wahid Baloch ◽  
Muhammad Ahmed Arain
Keyword(s):  
Upland Cotton ◽  
Block Design ◽  
Fibre Length ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Node Number ◽  
Plant Seed ◽  
Seed Cotton Yield ◽  
Fibre Traits ◽  
Selection Of

A field experiment was conducted at the experimental area of the Department of Plant Breeding & Genetics, Sindh Agriculture University Tandojam, during the year 2014-2015 in order to carry-out genetic analysis in F2 populations of upland cotton. The trial was laid-out in a Randomized Complete Block Design with four replications. The material was consisted of eight parents and ten F2 populations. The analysis of variance revealed significant differences among the parents and F2 populations for all the traits studied except that fibre length was non-significant in parents.  The results further suggested that maximum heritability, higher genetic variances coupled with more genetic gains were expressed by the F2 populations CRIS-134 ´ CRIS-508 and CRIS-134 ´ CIM-598 for 1st sympodial node number; CRIS-134 ´ Neelum- 121 and CRIS-134 ´ CRIS-508 for sympodial branches/plant;  CRIS-342 ´ FH-113 for boll weight;  CRIS- 342 ´ Neelum-121 for bolls/plant, seed cotton yield/plant, lint % and micronaire value and progenies CRIS-342 ´ MNH-886 followed by CRIS-342 ´ Neelum-121  for staple length.  These results also suggested that a number of F2 populations indicated their potential for various seed cotton yield and fibre traits. The phenotypic correlations revealed that most of the traits were significantly and positively associated with seed cotton yield/plant.  However, higher correlations of sympodial branches/plant (r = 0.69**) and bolls/ plant (r = 0.82**) with seed cotton yield indicated that both the traits are more reliable as compared to other traits for selection of higher seed cotton yields. Very interestingly, fibre traits like lint%, fibre length and micronaire were also significantly correlated with seed cotton yield, suggesting that fibre quality traits can be improved without compromising on seed cotton yield. Thus, the material under study is very promising and worthy of selection to improve many traits simultaneously.

scholarly journals Combining Ability Analysis for Seed Cotton Yield and Yield Contributing Traits in Desi Cotton (Gossypium arboreum L.) over the Environments

2021 ◽  
Vol 10 (10) ◽  
pp. 118-128
Author(s):  
V. N. Chinchane D. B. Deosarkar ◽  
K. S. Baig H. V. Kalpande
Keyword(s):  
Harvest Index ◽  
Dominant Role ◽  
Block Design ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Plant Seed ◽  
Seed Cotton Yield ◽  
Randomized Block Design ◽  
Boll Weight ◽  
Seed Index

Cotton is one of the most important fiber and cash crop of India and plays a dominant role in the industrial and agricultural economy of the country. Fifty six crosses with fifteen parents and four checks viz., PKVDH 1, PKVSuvarna, NACH 12 and PA 255 were grown in Randomized Block Design with two replications. Pooled over the environments, the highest GCA effect for seed cotton yield plant was showed by line PAIG 346and also exhibited high GCA (in desirable direction) for the traits, sympodia per plant, number of bolls per plant, seed index, lint index and harvest index. Among the testers, highest GCA for seed cotton yield per plant (9.72) was reported in CNA 449.This tester showed significantly desirable GCA for the characters viz. plant height, number of sympodia per plant, number of bolls per plant, boll weight, seed index and harvest index. Pooled over the environments, among the crosses highest SCA for seed cotton yield per plant was reported in PA 740 x Digvijay. It has also exhibited significant SCA in desirable direction for days to 50 % boll bursting, number of sympodia per plant, number of bolls per plant, boll weight, seed index and harvest index. Another cross which ranked second for with high per se and high SCA for seed cotton yield per plant was PAIG 346 x DWDa 1402.It showed significantly desirable SCA for days to 50 % flowering, number of sympodia per plant, number of bolls per plant, seed index, lint index and harvest index.

scholarly journals Determination of General and Specific Combining Ability of Five Upland Cotton Cultivars

2016 ◽  
Vol 8 (3) ◽  
pp. 106
Author(s):  
Habib R. Lakho ◽  
Ayaz A. Soomro ◽  
Muhammad A. R. Rashid ◽  
Shabana Memon
Keyword(s):  
Plant Height ◽  
Combining Ability ◽  
Upland Cotton ◽  
Block Design ◽  
Specific Combining Ability ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Diallel Mating Design ◽  
Seed Index

<p>The present investigation was aimed to determine the general combining ability of the parental lines and specific combining ability of the hybrids respectively and also heterotic effect of F<sub>1</sub> hybrids for some agro-economical traits in upland cotton. Five parent genotypes viz. NIAB-78, Chandi-95, Haridost, CRIS-134 and Shahbaz were used to generate ten F<sub>1</sub> hybrids through diallel mating design. The seeds of F<sub>1</sub> hybrids along with their parents were sown in Randomized Complete Block Design (RCBD) in three replications during 2009-10. All the traits showed highly significant variation and GCA and SCA variances were also significant for all the parameters studied. Among the parents, NIAB-78, Haridost and CRIS-134 were best general combiners for plant height, sympodial branches per plant, bolls per plant, boll weight, seed cotton yield per plant, GOT% and seed index. Cross NIAB-78×Chandi-95 was best specific combiner for plant height and bolls per plant and CRIS-134×Haridost for sympodial branches per plant. However, the hybrid Chandi-95×CRIS-134 proved best specific combiner for seed cotton yield per plant and GOT%, while NIAB-78×CRIS-134 gave maximum SCA effects for seed index.</p>

scholarly journals Gene Action Studies in the Inheritance of Yield and Quality Attributing Traits in Diallel Cross of Cotton (Gossypium hirsutum L.)

2021 ◽  
Vol 9 (3) ◽  
pp. 105-109
Author(s):  
V. J. Zapadiya ◽  
Keyword(s):  
Plant Height ◽  
Block Design ◽  
F1 Hybrids ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Gene Effects ◽  
Partial Dominance ◽  
Seed Cotton Yield ◽  
Genetic Components

A field experiment was conducted to evaluate the 45 F1 hybrids derived from 10×10 half diallel fashion along with ten parents and one standard check GN.Cot.Hy-14 were sown in randomized block design with three replications during kharif -2017 at Cotton Research Station, Junagadh Agricultural University, Junagadh. The genetic components of variation were determined for 12 characters viz., days to 50% flowering, days to 50% boll opening, plant height (cm), number of monopodia per plant, number of sympodia per plant, number of bolls per plant, boll weight (g), seed cotton yield per plant (g), ginning percentage (%), seed index (g), lint index (g) and oil percentage (%).The estimate of the components of variation revealed significant results for both additive (D) as well as dominance effects (H1 and H2) for all the characters except plant height non-significant H2 component, but in majority of traits (except plant height, lint index) H1 was higher than D indicating dominance components were important in the inheritance of seed cotton yield and its components. The average degree of dominance (H1/D)1/2 was found to be more than unity for all the traits (except plant height, number of monopodia per plant and lint index indicating partial dominance) indicating over dominance. Asymmetrical distribution of positive and negative genes in the parents was observed for all the traits. High estimates of heritability in narrow sense was observed for days to 50% flowering, days to 50 % boll bursting, number of monopodia per plant, ginning percentage (%), lint index (g) and oil content (%) suggesting that selection based on these attribute would lead to rapid improvement. Due to preponderance of non-additive gene effects of seed cotton yield per plant and most of its component traits, heterosis breeding would also be practically feasible in cotton.

scholarly journals RESPONSE OF COTTON TO NITROGEN FERTILIZER AND SPACING BETWEEN HOLES

2016 ◽  
Vol 47 (6) ◽  
Author(s):  
Alubaidi & et al.
Keyword(s):  
Nitrogen Fertilizer ◽  
Block Design ◽  
Lint Yield ◽  
Plant Spacing ◽  
Cotton Yield ◽  
Seed Cotton ◽  
College Of Agriculture ◽  
Seed Cotton Yield ◽  
Nitrogen Levels ◽  
Randomized Complete Block Design

This experiment was conducted at the farm of field crop department, College of Agriculture, University of Baghdad during two summer seasons (2010 and 2011) in order to know the response of cotton var. Lashata to nitrogen levels and spacing between holes. A randomized complete block design under arrangement of split plot with four replications was used. The plant spacing; 10, 20 and 30 cm between holes and 75 cm between rows considered as main plots, while three nitrogen levels (150, 200 and 250 Kg N.ha-1) are considered as sub plots. The results showed that using 10 cm between hills were significantly superior in boll weight (3.69 and 4.26) gm.boll-1, seed cotton yield (3.03 and 3.6) t.ha-1 and lint yield (1.13 and 1.30) t.ha-1 in both seasons 2010 and 2011 respectively. While, 30 cm spacing significantly superior in number of open bolls (12.10 and 13.6) bolls.plant-1 and ginning percentage (39.05 and 37.44)% in both seasons respectively. The nitrogen fertilizer 250 kg N ha-1 was significantly superior in dehiscence bolls number, seed cotton yield, lint yield and ginning percentage in both seasons 2010 and 2011 respectively. It can be concluded that 'using 10 cm spacing between holes with 250 kg N ha-1 to achieve highest seed cotton yield.  

Seed Cotton Yield and Fibre Properties of F1 and F2 Hybrids of Upland Cotton

2001 ◽  
Vol 1 (1) ◽  
pp. 48-50
Author(s):  
Mohammad Jurial Balo . ◽  
Abdul Rahim Lakho . ◽  
Hidayatullah Butto . ◽  
Rehmatullah Rind .
Keyword(s):  
Upland Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Fibre Properties ◽  
Seed Cotton Yield ◽  
F2 Hybrids

scholarly journals Genetic analysis of yield components and fiber quality parameters in upland cotton

1970 ◽  
pp. 13-19
Author(s):  
Bilal Nawaz, Saira Sattar, Tanwir Ahmad Malik
Keyword(s):  
Upland Cotton ◽  
Phenotypic Correlation ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Maximum Value ◽  
Fiber Fineness ◽  
Significant Difference ◽  
Boll Weight ◽  
Seed Index

The experiment was laid to analyze genetic features, genotypic and phenotypic correlation coefficients, path analysis with regression analysis among yield contributing traits in a selected F3 populations of upland cotton including parents. In this research experiment ANOVA showed significant difference among all individual plants in F3 populations. Monopodia per plant and bolls per plant possessed maximum value of PCV% and GCV%. Maximum broad sense heritability (≥ 90) was found in all recorded traits except seeds per boll, fiber length and lint percentage. Correlation studies revealed that Seed cotton yield positively correlated with all yield contributing traits i.e. plant height, monopodial branches per plant, Number of bolls per plant, boll weight, lint weight, seed index, lint index, seeds per boll, fiber fineness, fiber strength and fiber uniformity at both genotypic and phenotypic level whereas it depicted negative relationship with staple length. Path coefficient analysis showed that maximum direct positive effect was found of lint weight (2.6005) on seed cotton yield followed fiber fineness (1.2628), seed index (1.1449) and bolls per plant (1.0027). Regression study exhibited that maximum value of R2 for lint weight (0.9509) and boll weight (0.3735) depicted that 95.09% and 37.35% variation in the seed cotton yield, due to its relationship with lint weight and boll weight. It is concluded that there is a great genetic potential in F3 populations for mostly yield contributing traits for further enhancing yield. So those traits should be used as selection criteria during breeding for yield.

scholarly journals Study on Heterosis for Yield and Yield Contributing Traits in Desi Cotton (Gossypium arboreum L.)

2021 ◽  
Vol 10 (10) ◽  
pp. 129-141
Author(s):  
K. H. Deshmukh V. N. Chinchane ◽  
A. V. Shinde
Keyword(s):  
Block Design ◽  
Flowering Plant ◽  
Gossypium Arboreum ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Randomized Block Design ◽  
Boll Weight ◽  
Seed Index ◽  
Standard Heterosis

The present investigation entitled “Studies on Heterosis for Yield and Yield Contributing Traits in Desi Cotton (Gossypium arboreum L.) was undertaken with the objective to study the scale of heterosis over mid parent (Average heterosis), better parent (Heterobeltiosis) and standard check (Standard heterosis). The line x tester method of analysis was followed involving four females viz., PA 811, PA 839, PA 808 and PAIG 380 and six males viz. AKA 8, JLA 505, PA 812, AKA 7, PA 08 and Phule Dhanwantry for study of heterosis for various yield and yield contributing characters. The F1’s and theis parents were evaluated in Randomized Block Design with two replications. Observations were recorded on Days to 50 % flowering, Plant height (cm), Number of sympodia, Number of bolls/plant, Boll weight (g), Seed index, Seed cotton yield/plant (g) and Lint index. The magnitude of heterosis was highest for seed cotton yield per plant, which was recorded to the extent of 115.28 % over standard check PKV Suvarna in the cross PAIG 380 x AKA 8 followed by 109.68 % over standard check PKVDH 1.

scholarly journals 1-Methylcyclopropene and Aminoethoxyvinylglycine effects on yield components of field-grown cotton

2013 ◽  
Vol 37 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Giovani Greigh de Brito ◽  
Alexandre Cunha de Barcellos Ferreira ◽  
Ana Luiza Dias Coelho Borin ◽  
Camilo de Lelis Morello
Keyword(s):  
Stress Responses ◽  
Yield Components ◽  
Block Design ◽  
First Record ◽  
Ethylene Synthesis ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Synthesis Inhibitor ◽  
Seed Cotton Yield ◽  
Fiber Yield

Biotic and abiotic stresses can alter the hormone balance and trigger the activation of pathways involved in the cotton stress responses, resulting in the abscission of squares, flowers and young bolls and consequent reductions in the seed cotton yield and fiber yield. As part of the mechanism that primarily regulates the protective response of plants against stresses, ethylene is considered a key hormone involved in this response, and increased ethylene synthesis has been observed when plants are subjected to stress. Thus, the development of strategies aimed to mitigate their negative effects can reduce the shed rate of reproductive structures and positively impact cotton productivity. For this purpose, 1-methylcyclopropene (1-MCP), a compound that inhibits the action of ethylene, and aminoethoxyvinylglycine (AVG), an ethylene synthesis inhibitor, were sprayed on cotton plants to investigate their effects on the seed cotton yield (SCY), fiber yield (FY), fiber percentage (% Fiber) and final stand of plants (STAND) during two cotton growth seasons (2010 and 2011). To this end, experiments were performed in a randomized complete block design with five replicates. Our results demonstrate that the inhibitors of ethylene synthesis and action increased the seed cotton and fiber yield during both growing seasons. The results obtained after AVG spraying in the initial reproductive phase (first square emission) presented the highest values for the cotton yield components and are the first record of the success of this method in Brazil.

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