Morphological Diversity and per se Performance in Upland Cotton (Gossypium hirsutum L.) (original) (raw)
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Journal of agricultural research
A study was carried out at Cotton Research Institute, AARI, Faisalabad Pakistan during the year 2013 to determine the cause and effect of some morphological traits viz. number of leaves per plant, number of sympodial branches per plant, number of bolls per plant and plant height on seed yield per plant in upland cotton. Seventy two cotton genotypes at F5 generation were sown in a RCBD with three replications. The results indicated that number of leaves (0.2334), sympodial branches (0.4859) and number of bolls per plant (0.3722) had exerted positive and significant to highly significant correlation at genotypic level with seed cotton yield per plant. The data also revealed that number of leaves showed positive and highly significant correlation with sympodial branches (0.3427**) plant height (0.6924**) and bolls per plant (0.4238**). Number of leaves, bolls per plant and sympodial branches showed positive direct effect on seed-cotton yield per plant. Direct effect of sympodial branch...
Correlation Analysis of Yield and Fiber Traits in Upland Cotton ( Gossypium hirsutum L . )
2016
An experiment was carried out in a Randomized Complete Block Design with four replications and eight varieties viz. FH-114, CRIS-134, NIA Ufaq, Sohni, NIAB-777, Reshmi, Chandi and Shahbaz of upland cotton at experimental field of Nuclear Institute of Agriculture, Tandojam, during the year 2013, for assessing the correlation between yield and fiber traits in upland cotton genotypes. The observations were recorded on ginning outturn (%), staple length (mm) and micronaire value (μg/inch). Significantly maximum ginning outturn (39.27), staple length (30.37) and fiber fineness (3.95) was recorded by variety Reshmi. Correlation studies were analyzed for ginning outturn (%), staple length (mm), micronaire value (μg/inch). Results revealed that staple length was positive significantly associated with plant height, monopodial, ginning outturn which indicated that these qualitative characters can be used as reliable selection criteria to improve qualitative value of cotton.
Genetic Studies of Various Morphological Traits in Upland Cotton (Gossypium hirsutum L.)
A complete diallel cross experiment was conducted involving five cotton (Gossypium hirsutum L.) genotypes viz. SLH-41, F-281, COKER-3113, LA-85-52-1 and H-88-8-J.69-J.70 to explore genetic effects controlling various quantitative traits. Data on major agaronomic traits including plant height, number of monopodial branches, sympodial branches, number of bolls per plant and boll weight were recorded. All the genotypes were found to be significantly different from each other for the above mentioned traits. Joint regression analysis proved the validity of the data of all traits for additive-dominance model. All the traits almost showed over dominant type of gene action while the inheritance of number of sympodial branches was of additive type with partial dominance. Over dominance suggested heterosis breeding as an appropriate tool for improvement of these traits. Cotton occupies a unique position in Pakistan's agriculture economy. Efforts on various aspects of cotton crop improveme...
On the basis of D 2 values, sixty eight genotypes of various geographical origins were grouped into eight clusters containing one to fifty five genotypes. For fibre quality traits genotypes grouped in to six cluster indicating non significant correlation between genetic and geographical diversity. The traits days to first flower, seed cotton yield and bolls / plant, monopods contributed maximum toward the divergence. The genotypes of cluster VIII showed maximum genetic divergence with cluster VI, III and VII and genotypes of these clusters may be selected for hybridization for generating genetic variability. Maximum divergence for fibre quality traits was observed between genotype of cluster III with genotypes of cluster VI indicating the fact that the genotypes found in one cluster differed entirely from the genotypes present in other clusters. Cluster VI seems to be most promising for agronomic traits followed by cluster VII, IV and II. Thus, selection and use of these genotypes be useful to generate desirable genetic variability.
The experimental material for the present investigation comprised of 40 elite genotypes of upland cotton with one check (H 1098i). All the genotypes and checks were sown in the experimental area of the Cotton Section, Department of Genetics and Plant Breeding, Chaudhary Charan Singh Haryana Agricultural University, Hisar. Based on the mean performance genotypes viz., and H 1557 had high mean values for different yield and yield contributing traits. Analysis of variance revealed significant differences for all traits studied among the progenies. Moderate estimates of the genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were observed for seed cotton yield per plant, lint yield per plant, lint index and number of bolls per plant. High heritability coupled with high genetic advance as per cent of mean was recorded for seed cotton yield per plant, lint yield per plant, lint index and number of bolls per plant. The correlation studies reveal highly significant positive association of seed cotton yield per plant with all the important yield contributing traits. The path-coefficient analysis suggested the importance of lint yield per plant and seed index as they exhibited high positive direct effects on seed cotton yield per plant. Hence, selections based on the above characters will result in genotypes with high seed cotton yield.
Genetic variability exploration in upland cotton (Gossypium hirsutum L.) for yield and fiber traits
2023
This experiment aimed to investigate genetic variability among the all genotypes along with heritability presence, genetic advance per cent over mean, correlation studies and path coefficient carried out for 17 different characters in 16 genotypes, including sixty-four F1 hybrids, and one check G. Cot. Hy. 18 of upland cotton (Gossypium hirsutum L.). The trail was demonstrated during the Kharif season of 2022 at the Regional Research Station (RRS), Anand Agricultural University, India. Variability studies revealed high phenotypic coefficient of variation (PCV) and moderate genotypic coefficient of variation (GCV) for the number of bolls per plant, lint yield per plant and seed cotton yield per plant. Additionally, the number of monopodia per plant exhibited a high estimate of both PCV and GCV. Heritability analysis showed high heritability for various traits, including days to 50% flowering, days to 50% boll bursting, plant height, monopodia per plant, sympodia per plant, number of bolls per plant, boll weight, lint yield per plant, seed cotton yield, seed index, fiber strength, fiber fineness, and seed oil content. Moreover, days to 50% flowering, plant height, number of monopodia per plant, number of sympodia per plant, number of bolls per plant, boll weight, lint yield per plant, seed cotton yield, fiber fineness, and seed oil content demonstrated both high heritability and significant genetic advance as per cent over the mean. This stipulate significant attributing part of additive gene action in the heredity of these characteristics. During the correlation study, it was found that seed cotton yield per plant showed noteworthy positive correlations with several traits: the number of sympodia per plant (0.29), the number of bolls per plant (0.77), fiber length (0.26), uniformity index (0.37), and lint yield per plant (0.95). Path analysis revealed that seed index and ginning outturn had the highest positive and direct effects on seed cotton yield per plant.
Relationships Between Some Physio-Morphological Traits and Cotton (Gossypium hirsutum L.) Yield
2000
The leaf shape, size, area and number of leaf per plant of cotton are factors which effect seed yield via photosynthetic activity. The experiment, composed of six cotton cultivars, three normal leaf shape and three okra leaf shape were conducted in the University of Dicle, Faculty of Agriculture Experimental Area, in randomized complete block designs, Turkey in 2007. In the
2015
The use of already existing genetic variability in the breeding material as well as the creation of new variability along with the genetic understanding of various agronomic traits is of crucial importance to develop potential sources of cotton. The 5x5 complete diallel cross experiment was carried out in order to determine gene action as well as general and specific combining ability consisting of five parental genotypes namely MNH-700, BH-162, CIM-499, FH-634 and Sarmast. All the traits were controlled by additive type of gene action with partial dominance. Maximum numbers of dominant genes were observed in FH- 634 for plant height and number of sympodial branches. Variety CIM-499 has maximum number of dominant genes for number of bolls, number of sympodial branches and seed cotton yield while SARMAST has maximum number of dominant genes for boll weight. MNH-700 was good general combiner for boll weight and number of bolls, CIM-499 for seed cotton yield and number of sympodial bra...
Sixty eight diverse genotypes of American cotton Gossypium hirsutum L. were evaluated for 13 qualitative and quantitative traits. The correlation study revealed that seed cotton yield was found to be positively and significantly correlated with traits like bolls/plant, plant height, seed index, boll weight, lint index, 2.5 per cent span length, monopodial branches and bundle strength, whereas it had negative association with ginning outturn and uniformity ratio. Path analysis revealed that bolls/plant, 2.5 per cent span length, uniformity ratio, lint index and seed index showed positive direct effect on seed cotton yield which suggested that selection for these traits would be quite effective to improve the seed cotton yield in upland cotton.
Int.J.Curr.Microbiol.App.Sci., 2017
The present investigation was focused on studying combining ability and heterosis breeding for yield, fibre quality and economically important traits designed among 19 parents and 84 hybrids developed through line x tester method. The analysis of variance indicated substantial variability among the experimental material for yield and fibre quality traits. All the characters were predominantly controlled by non-additive gene action except lint index. Four parents viz., TCH 1705-152, TCH 1705-101, TCH 1705-250, Surabhi were identified as very good general combiners. The hybrids, TCH 1705-152 x BS-1, ARBC 1301 x KC3, DSC-1302 x COD 5-1-2 and C 10-3 x TCH 1705-250 observed significant sca effects and four hybrids viz., TCH 1705-152 x BS-1, TCH 1705-101 x COD 5-1-2, TC H 1705-152 x Surabhi and VS-9-S11-1 x Surabhi were identified as the best hybrids well suited for exploitation through heterosis breeding with regard to per se, sca effect and standard heterosis.