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Genetic variability and character association in gladiolus (Gladiolus grandiflorus L.)
... . [5], Blamuurugan et al., [6], Kumar et al., [7], Naresh et al., [8], and Mishra [9]. Similar findings were also reported by Bhujbal et al., [5], Blamuurugan et al., [6], Kumar et al., [7], Naresh et al., [8], Mishra [9] and Pattanaik et al. [10]. ...
... . [5], Blamuurugan et al., [6], Kumar et al., [7], Naresh et al., [8], and Mishra [9]. Similar findings were also reported by Bhujbal et al., [5], Blamuurugan et al., [6], Kumar et al., [7], Naresh et al., [8], Mishra [9] and Pattanaik et al. [10]. ...
... and no. of cormels per hectare(1349073.89). The results was also in accordance with the findings of Sing et al.,[18], Naresh et al.[8], Bhujbal et al.[5] and Kumar et al.[7]. ...
Aim: An experiment to “Study on Genetic Variability and correlation coefficient of Gladiolus Cultivars Under Agro-Climatic Conditions of Prayagraj”. Place and Study of Duration: It was carried out at Horticulture Research Farm, Department of Horticulture, Naini Agriculture Institute during the Winter season of 2023-24. Study Design: Randomized complete block design. Methodology: The analysis of variance for different quantitative characters are with significant differences among the genotypes for parameters like growth, flowering and corm yield per plant of gladiolus. The highest corms yield/plant (g/plant) of genotype was observed in White prosperity (111.37). While lowest corms yield/plant (g/plant) was observed for Tambri (55.47). High magnitude of GCV and PCV were recorded for weight of daughter corm (20.396 and 21.71. In the present investigation, the genetic advance estimates were found to be high for no. of days taken for first floret open (24.58), corm weight / plot (g) (126.02), weight of mother corm / plot (g) (166.38), weight of daughter corm (70.43), no. of corm per hectare (42515.19) and no. of cormels per hectare (1349073.89). In the present investigation, the genetic advance as mean percentage estimates were found to be high for number of leaves per plant at 30 das (20.27), days taken for corm sprouting (31.48), no. of days taken for first floret open (31.38), weight of mother corm / plot (g) (27.03), weight of daughter corm (39.46) and no. of cormels per hectare (21.70). Genotypic and phenotypic correlation coefficient analysis revealed that Corms weight/plant (g) showed positive significant association with plant height (cm), number of leaves per plant , number of shoot per plant, rachis length (cm), no. of floret per spike, no. of spike per plant, floret diameter (cm), spike length (cm), vase life (days), corm weight / plot (g), weight of mother corm / plot (g), weight of daughter corm, corm diameter (cm), no. of corm per hectare and no. of cormels per hectare at both levels genotypic and phenotypic.
... This might have helped in the early transformation from vegetative to reproductive phase and thus early bud initiation and bud opening of flowers. Similar results have been reported by Kumar et al. 2011 [6] and Singh et al. (2013) [10] in Gladiolus. Sarkar (2018) [8] in chrysanthemum. ...
... This might have helped in the early transformation from vegetative to reproductive phase and thus early bud initiation and bud opening of flowers. Similar results have been reported by Kumar et al. 2011 [6] and Singh et al. (2013) [10] in Gladiolus. Sarkar (2018) [8] in chrysanthemum. ...
... Balaram and Janakiram (2009) [1] studied genetic variability among different genotypes of gladiolus and recorded high degree of variability for most of the characters. Similar results were reported by Kumar et al., (2011) [9] . Raj and Mishra (1996) [16] reported highest PCV and GCV for weight of cormels. ...
... The high value of genetic advance indicates additive gene action for the characters like plant height, days to flowering, spike initiation and rachis length whereas for remaining characters whose genetic advance ranges from 0.79% to 26.87% show that they possess non-additive gene action. The same result was reported by Kumar et al. (2010), Maurya et al. (2011), Singh et al.(2022. ...
In this study, 31 genotypes of gladiolus were examined to provide estimates of genetic variability, analysis of variance, genetic parameters (GCV, PCV, heritability and genetic progress) for thirteen different characters. The research trial was conducted at the crop research Center, Department of Genetics and Plant Breeding, School of Agriculture, ITM University, Gwalior, Madhya Pradesh using RBD design. According to the analysis of variance, 31 genotypes had notable variations for each character. Heritability estimates ranged from 22% to 99%. While the highest heritability 99% was predicted for the spike initiation, the character number of shoots per corm was expected to have the lowest heritability 22.76%. The percentage of genetic advances ranges from 24.25% to 69.41% of the mean. The highest and lowest percentages of the mean genetic advance were found for plant height 51.77% and the number of shoots per corm 0.79% .
... High GCV recorded for number of bulblets/plant, number of flowers/plant and number of leaves/plant indicating these traits were little influenced by environment and selection of these traits for improvement will be effective. These results are in conformity with Choudhary et al. (2012) and Kumar et al. (2010) in gladiolus. ...
The present study was carried out for two years (2016-18) to estimate the genetic variability, heritability, genetic advance, genetic gain and correlation among 18 Lilium genotypes. Findings revealed characters such as number of bulblet/plant, number of leaves/plant and number of flowers/plant recorded high genotypic coefficient of variability (GCV). High heritability coupled with moderate genetic advance recorded for number of leaves/plant, plant height and stem length. Moderate heritability with highest genetic gain recorded for number of bulblets/plant followed by traits such as number of leaves per plant, leaf width, number of flowers/plant and weight of bulblet etc. Significant positive correlation of yield parameter (number of flowers per plant) recorded with plant height, number of leaves per plant, leaf length, stem length, stem diameter, duration of flowering, bulb diameter and weight of bulb etc. Maximum positive direct effect of days to flower bud formation, number of leaves per plant, bulb diameter, weight of bulb, leaf length, stem length etc. on number of flowers per plant revealed the true relationship between them and selection on the basis of these characters would be more effective for the improvement among Lilium genotypes.
... The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all quantitative traits, indicating the predominant role of environment in the expression of the traits. Similar results were obtained by Kumar (2011a), Sahana (2011a) and Geeta (2014) Table 1. Estimates of mean, range, components of variance, heritability and genetic advance for growth parameters in gladiolus genotypes GV -Genotypic variance GCV -Genotypic coefficient of variation h -Heritability PV -Phenotypic variance PCV -Phenotypic coefficient of variation GA -Genetic advance GAM -Genetic advance over per cent mean additive gene action in their inheritance hence, suitable for selection. ...
Genetic variability and correlation studies in twenty gladiolus genotypes for vegetative, floral, corm and cormel characters
was conducted. The estimated phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation
(GCV) for twenty four characters studied. The traits like rachis length, number of spikes per plant, weight of spike, number of
florets per spike, number of corms per plant, number of cormels per plant, weight of corm, yield of corms kg per hectare and
yield of corms tons per hectare exhibited high heritability (>75%) coupled with high genetic advance as per cent mean
(>30%) which indicated the prevalence of additive gene action in expression of these traits and there by further improvement
of these traits could be made by selection. A study on the association of various morphological traits through correlation
analysis in gladiolus showed that number of spike per plant had significant and positive correlation with plant height, number
of leaves, leaf length, leaf width, leaf area, spike length, rachis length, number of florets per spike, vase life, number of corms,
weight of corms and diameter of corm. Spike length exhibited significant and positive correlation with plant height, number of
leaves, leaf width, leaf area, rachis length, number of florets per spike, diameter of the floret, weight of the spike, length of the
floret, vase life, number of corms, number of cormels, weight of corm, diameter of corm. The results of investigation revealed
that number of spike per plant spike length and number of florets per spike are important yield and quality characters. Hence,
these characters may be considered as selection indices in breeding programme.
... The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation(GCV) for all quantitative traits, indicating the predominant role of environment in the expression of the traits. Similar results were obtained by Kumar et al. (2011), Sahana et al. (2011 and Geeta et al. (2015) in gladiolus. The phenotypic coefficient variation (PCV) and genotypic coefficient of variation (GCV) was highest for number of cormels per plant (74.18, 69.91) followed by weight of corms (51.17, 49.73), yield of corms tons per hectare(50.31, ...
Assessment of genetic variability, heritability and genetic advances of 20 gladiolus genotypes were evaluated. Thepresence of high amount of variability was observed for number of cormels per plant and weight of corms in the20 gladiolus genotypes. The heritability of different field characters was categorized as very high which rangedbetween 31.84% (Leaf length) to 94.44% (Weight of corms). The traits like rachis length, number of spikes perplant, weight of spike, number of florets per spike, number of corms per plant, number of cormels per plant,weight of corm, yield of corms kg per hectare and yield of corms tons per hectare exhibited high heritability(>75%) coupled with high genetic advance over per cent mean (>30%) which indicated the prevalence ofadditive gene action in expression of these traits and there by further improvement of these traits could be madeby selection. It was concluded that highly significant varietal differences indicated the presence of high amount ofvariability
(PDF) Evaluation of genetic variabiliy of Gladiolus genotypes. Available from: https://www.researchgate.net/publication/364937604_Evaluation_of_genetic_variabiliy_of_Gladiolus_genotypes [accessed Oct 31 2022].
... The genotypic coefficient variance value was categorized as low (0-10%), moderate (10-20%) and high (20% and above) given by Sivasubramanian and Madhavamenon (1973). Wide range of genotypic coefficient of variation (GCV) was observed for the characters ranging [13], Naresh et al., [10], Bhujbal et al., [8] and Kumar et al., [9]. ...
An experiment to Study on genetic variability of Gladiolus (Gladiolus grandiflorus) cultivars under prayagraj agro-climatic conditions was carried out at Departmental research field of Horticulture, Naini Agriculture Institute during the Rabi season of 2021-2022 with Eight Cultivars in randomized block design with three replications. The viz. White prosperity, Mohini, Hunting song, Creamy green, Suchitra, Samara, Nova, Peterpears. Evaluated were out of twenty-five cultivars means estimated Genetic variability, heritability, phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) and genotypic correlation. The characters, Plant height at (30, 60, 90 DAS), Number of leaves per plant at (30,60,90 DAS), No. of shoot per plant, Days taken for corm sprouting, Rachis length, Days taken to spike emergence, days taken colour break stage, No. of floret per spike, No. of spike per plant, No. of days taken for first floret open, No. of days taken for last floret open, spike length, floret diameter, vase life, Weight of daughter corm, Weight of mother corm, corm diameter, corm weight, No. of corm per hectare, No. of cormels per hectare and Corm yield/plant observed for all characters. Highest GCV and PCV were recorded for Weight of daughter corm (g) (33.6786 and 47.569), No. of cormels per hectare (37.743 and 37.97), No. of corm per hectare (27.961 and 32.13), No. of days taken for first floret open (30.0614 and 30.0889), Corm yield/plant (23.667 and 29.334), Weight of mother corm (25.6022 and 28.1499),Corm weight (21.75 and 25.49), Days taken for corm sprouting (23.7566 and 23.7566) and lowest GCV and PCV were recorded for No. of floret per spike (2.7578 and 3.3549). The genotypes Creamy green and White prosperity were found to produce the highest spike yields per plot and the highest numbers of corm per hectare, respectively. These genotypes may be sown for higher yields and showed a good response to selection due to their high heritability, variability, and genetic advance, which showed additive gene effect. These genotypes can be utilised to selectively increase yield and component attributes.
... Narrow difference between GCV and PCV were observed for all the characters except number of days taken to first flowering and shelf life; which indicated that least influence of environment on these characters. Similar results were obtained by Mishra et al. (2001) in dahlia, Lydia et al. (2019) in marigold and Kumar et al. (2011) in gladiolus. ...
The present investigation was carried out to know the genetic variability, heritability and genetic advances in dahlia with thirty five genotypes. High genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were observed for flower diameter, shelf life, individual weight of flower, number of flowers per plant, flower yield per hectare, tuber yield per plant. Whereas, high heritability (h 2) coupled with genetic advance over mean (GAM) was registered highest in plant height, number of secondary branches per plant, leaf area, leaf area index number of days taken to first flowering, flower diameter, shelf life, individual flower weight number of flowers per plant, flower yield per hectare and tuber weight per plant.
... High value of genetic advance indicates additive gene action for the characters, leaf area, spike length and plant height on the other hand rest six characters whose genetic advance ranged from 16.7 to 0.72, indicates presence of non-additive gene action. Similar result was also reported by Kumar et al., (2010) and Maurya et al., (2011). ...
This study was undertaken to find out the estimates of genetic variability, analysis of variance, genetic parameters viz GCV, PCV, heritability and genetic advance among different flower traits between 20 genotypes of gladiolus. The experiment was repeated three times by using RBD (Randomized block design) at crop research centre, Department of Genetics and Plant Breeding, School of Agriculture, ITM University, Gwalior, Madhya Pardesh. Analysis of variance indicated highly significant difference for all the trait among 20 genotypes. The estimate of heritability varied from 92% to 42%. The highest heritability was estimated in broad sense was observed for the character leaf area (92.01%) and lowest for weight of daughter corms (42%). The genetic advance expressed as percent of mean ranged from 7.65% to 55.82%. The highest of genetic advance as percentage of mean was recorded for no. of shoots per corm (55.82%) and lowest for spike initiation (7.65). Environmental coefficient of variance (ECV) ranged from (2.72 to 37.13). the highest ECV was recorded for the character weight of daughter of corms (37.13) and lowest for days to spike initiation (2.72). Key words: Gladiolus, GCV, PCV, Heritability, Genetic Advance as percentage of mean
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