Genetic variability, heritability and character association studies in sweet corn (Z<i>ea mays</i> L. <i>saccharata</i>)

Niji, M.S.; Ravikesavan, R.; Ganesan, K.N.; Chitdeshwari, T.

doi:10.5958/0975-928x.2018.00129.1

Cited by 11 publications

(24 citation statements)

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“…In the present study, estimates of PCV were found to be slightly higher than their corresponding GCV for most of the traits (Table 2), which indicates that the expressions of these traits were influenced by environment to a limited extent and there is possibility of improvement of these traits by using phenotypic selection. Similar findings of higher PCV than GCV were reported by Alan et al, (2013), Niji et al, (2018) and Ayodeji Abe and Adelegan ( 2019) in sweet corn. The difference between PCV and GCV estimates were found to be more for the traits days to 50% tasseling, plant height and green fodder yield, indicating that for these traits the phenotypic selection may be misleading.…”

Section: Resultssupporting

confidence: 88%

“…The trait PFSR disease score, cob weight without husk, cob weight with husk and ear height registered more than 20 percent of GCV and PCV and these traits were considered for selection of sweet corn inbred lines. Hefny (2011) for yield per plant, Reddy et al, (2012) and Meena et al, (2016) for ear height and Niji et al, (2018) for green cob yield reported high estimates of PCV and GCV.…”

Section: Resultsmentioning

confidence: 99%

“…Heritability is a measure of the phenotypic variance attributable to genetic causes and it predicts the extent to which a particular character can be transmitted to successive generations. Whereas genetic advance shows the degree of gain obtained for the characters under a particular selection pressure (Niji et al, 2018). Heritability estimates along with genetic advance are normally more helpful in predicting gain under selection than heritability estimates alone as it is not sufficiently informative about the existence of gene action (additive/non-additive) and involvement of other factors in the expression of traits (Johnson et al, 1955).…”

Section: Introductionmentioning

confidence: 99%

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Studies on Genetic Parameters, Correlation and Path Analysis for Yield and Yield Attributing Traits in Sweet Corn (Zea mays L. saccharata)

Chavan¹,

Bhadru²,

Swarnalatha³

et al. 2020

Int.J.Curr.Microbiol.App.Sci

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Studies on Genetic Parameters, Correlation and Path Analysis for Yield and Yield Attributing Traits in Sweet Corn (Zea mays L. saccharata)

Chavan¹,

Bhadru²,

Swarnalatha³

et al. 2020

Int.J.Curr.Microbiol.App.Sci

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“…In sweet corns, good husk covering is one of the most important quality characteristics (Tracy, 1997) as complete husk covering shields of the ears from earworm attack (Lynch et al, 1999;Gardner et al, 2000). Consistent with the results of the present study, Alan et al (2013) and Niji et al (2018) reported low PCV and GCV estimates for DA, DS, PH, CL and CD in sweet corn.…”

Section: Estimates Of Variance Components Heritability and Genetic Advancesupporting

confidence: 89%

“…The slightly higher PCV than GCV for all traits in this study indicates that the expressions of the traits were influenced, though to a limited extent, by the environment and there is the possibility of improvement using phenotypic selection. Similar results indicating higher PCV than GCV for all traits were reported by Saleh et al (2002), Alan et al (2013) and Niji et al (2018) in sweet corn as well as Maphumulo et al (2015), Sesay et al (2016) and Jilo et al (2018) in field maize. The PCV for ASI was more than twice the GCV, an indication of limited chance for selection for the trait in the populations studied.…”

Section: Estimates Of Variance Components Heritability and Genetic Advancesupporting

confidence: 85%

Genetic variability, heritability and genetic advance in shrunken-2 super-sweet corn (Zea mays L. saccharata) populations

Abe¹,

Adelegan²

2019

J. Plant Breed. Crop Sci.

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Inbred line development requires information on the nature and magnitude of genetic variability and transmissibility of desired trait in source populations. In this study, the level of genetic variability, heritability and genetic advance of thirteen agronomic and fresh yield traits among twelve shrunken-2 super-sweet corn populations were evaluated. Field experiments were conducted for two years in Ibadan, Nigeria using a randomised complete block design with three replicates. Estimates of genetic variability components, broad-sense heritability and genetic advance were computed for each trait. All the traits exhibited significant genotypic differences. Genotypic variance was significant for number of marketable cobs, yield of cobs, number of cobs, number of kernel rows, husk cover, ear height and days to anthesis, while environmental variance was significant for all the traits. Phenotypic coefficients of variation were higher than the corresponding genotypic coefficients of variation for all traits. Broadsense heritability ranged from 22.2% for anthesis-silking interval to 85.1% for husk cover. The genetic advance was high (32.7%) for husk cover, medium (12.0%) for yield of cobs and low for other traits. Genetic variability was present among the shrunken-2 super-sweet corn populations. Opportunities abound for further improvement of the populations and extraction of lines for hybrid seed production.

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Genetic parameters of various local corn cultivars in high salinity stress

Samudin,

Jeki,

Maemunah

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Future demand for maize will not be easily met due to climate change and its development using marginal soils that are stressed by salinity. This study aims to identify the genetic parameters of corn plants under high salinity stress. The research was arranged in a randomized completely block design (RCBD) consisting of six local maize cultivars, namely Gento, Lanca, Pulut, Lokal, Lei, and Sigi Merah. Each treatment was repeated four times. The results showed that two traits had a high coefficient of genotypic diversity, four traits had a high coefficient of phenotypic diversity and six traits had high heritability and genetic progress. Plant height, the greenness of the leaves, age of male flower release, age of blooming female flowers, the position of the ear, harvest age, length of cob without stalks, and diameter of the cob were positively and significantly correlated with yield. Plant height and cob height can be used as criteria for increasing maize yields through indirect selection. In future studies suggest that various local maize cultivars can be applied to situations of high salinity stress.

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Genetic variability, heritability and character association studies in sweet corn (Zea mays L. saccharata)

Cited by 11 publications

References 0 publications

Studies on Genetic Parameters, Correlation and Path Analysis for Yield and Yield Attributing Traits in Sweet Corn (Zea mays L. saccharata)

Studies on Genetic Parameters, Correlation and Path Analysis for Yield and Yield Attributing Traits in Sweet Corn (Zea mays L. saccharata)

Genetic variability, heritability and genetic advance in shrunken-2 super-sweet corn (Zea mays L. saccharata) populations

Genetic parameters of various local corn cultivars in high salinity stress

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