Correlation and path coefficient analysis for yield and fibre quality traits in upland cotton (Gossypium hirsutum L (original) (raw)
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Phenotypic correlation and path coefficient analysis have been worked out for yield and fiber quality traits in 173 RILs of Gossypium hirsutum L. cotton at Agricultural Research Station, Dharwad, UAS, Dharwad. Number of bolls per plant, boll weight, 2.5% span length and micronaire value were found to be positively correlated with seed cotton yield while days to 50 per cent flowering shown negative correlation. Further partitioning of correlation coefficients into direct and indirect path ways of influences showed that the characters having most influence on seed cotton yield are boll weight and number of bolls per plant, which can be considered while selecting for higher yields.
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 variability, correlation and path analysis in upland cotton (Gossypium hirsutum L
Sixty eight diverse genotypes of American cotton Gossypium hirsutum L. were evaluated for 13 quantitative and fibre quality traits. The variability studies indicated that high PCV and GCV was observed in case of seed cotton yield/ plant and number of bolls/plant while moderate PCV and GCV was observed in case of days to first flower, plant height and boll weight. Seed cotton yield /plant, days to first flower, plant height, number of bolls/plant and boll weight shows high heritability with high genetic advance over mean. The correlation study revealed that seed cotton yield was found to be positively and significantly correlated with traits like days to first flower, plant height, number of monopodial branches, number of bolls/plant, seed index, lint index, ginning out turn, and uniformity ratio, whereas it had negative association with boll weight, 2.5% span length, fibre fineness, and bundle strength. Path analysis revealed that days to first flower, number of monopodial branches, number of bolls/plant, boll weight, seed index, lint index, ginning out turn and uniformity ratio showed positive direct effect on seed cotton yield. Hence selection for these traits would be quite effective to improve the seed cotton yield in upland cotton.
2021
The present Investigation was carried out to study the correlation, path coefficient and D analysis in American cotton. The material was evaluated in a Randomized Block Design (RBD) with three replications during kharif 2019. In this experiment association analysis revealed significant positive correlation for seed cotton yield per plant with number of bolls per plant. The path analysis revealed that the days to boll opening, number of bolls per plant, boll weight, ginning percentage, and 2.5% span length and fibre fineness exhibited high direct effect on seed cotton yield per plant. D analysis indicated wider genetic diversity among fifty genotypes of cotton which were grouped into twelve clusters. Maximum genetic divergence was observed between cluster XI and cluster XII followed by cluster VI and cluster XII.
2020
This experiment was carried out with 40 genotypes of cotton in randomized complete block design (RCBD) with three replications at Regional Agricultural Research Station, Lam, Guntur during kharif, 2019-20. Each plot consisted of one row of 6 m length and observations were recorded on five randomly selected plants from each genotype per replication for characters viz., plant height (cm), number of monopodia plant per plant, number of sympodia plan per plant, number of bolls plant per plant, boll weight (g), seed index (g), lint index (g) and seed cotton yield plant per plant (g). The characters viz., Days to 50% flowering, ginning out turn (%), 2.5% span length (mm), micronaire (10-6 g /inch), bundle strength (g/tex) and uniformity ratio were recorded on plot basis. Correlation and path coefficient analysis were worked out for 14 characters among 40 genotypes of upland cotton. Correlation studies revealed that plant height, number of sympodia per plant, number of bolls per plant and ...
2020
the present study contained 16 testing genotypes that were laid out in a Randomized Complete Block Design (RCBD) with four replications at Cotton Research Station, Dera Ismail Khan, Pakistan with an objective of determining association of traits. Days to emergence, number of sympodial branches plant-1 , number of nodes to first fruiting branch, Plant height, boll number plant-1 , boll weight, seed cotton yield plot-1 ,Seed cotton yield ha-1 ,ginning percentage, lint yield plot-1 and ha-1 , hundred seed weight, micronaire, upper half mean length, short fiber content, fiber Strength, degree of reflectance and yellownesshad showed significance difference at (p=0.05) and their genetic variability was further calculated. Associations among various traits at genotypic and phenotypic level showed that lint yield ha-1 was positively associated with seed cotton yield, boll number per plant and ginning percentage and micronaire. Path coefficient analysis at phenotypic and genotypic level for agronomic traits revealed that seed cotton yield ha-1 and ginning percentage were the most important traits in determining lint yield ha-1 .These traits exerted thehighest positive direct effect on lint yield ha-1. Path coefficient analysis of quality traits at phenotypic level revealed that upper half mean length had showed the highest direct positive effect on fiber strength followed by short fiber content and fiber uniformity, respectively. The path coefficient analysis for genotypic level of fiber quality traits had showed upper half mean length, fiber uniformity and degree of reflectance had a direct positive effect on fiber strength
This study was carried out to determine direct and indirect effects of some characters (single leaf area, leaf SPAD value, number of nods, number of sympodial branches, number of monopodial branches, single boll weight, number of bolls) on seed cotton yield. The experiment was carried out with four cotton varieties, two of which okra-leaf (Adana 98, Siokra 1/4) and two of which normal-leaf (Teks and Stoneville 453) cotton (Gossypium hirsutum L.) and was conducted the randomized block design with 4 replications. In order to increase seed cotton yield in the studies of breeding program and selection orderly leaf SPAD value, number of sympodial branches, single boll weight, number of monopodial branches and number of bolls characters determined that must be high. Results showed that in order to increase seed cotton yield in the studies of breeding program and selection the highness of leaf SPAD value, number of sympodial branches, single boll weight, number of monopodial branches and n...