Performance evaluation and genetic parameters estimation of multi-companies maize hybrids in Lamahi Dang, Nepal

Shrestha, Suraj; Niraula, Dikshya; Regmi, Sudikshya; Basnet, Saugat; Chhetri, S.; Kandel, Bishnu Prasad

doi:10.1016/j.heliyon.2023.e14552

Cited by 4 publications

(13 citation statements)

References 59 publications

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“…Among the traits studied, grain yield, plant height and ear height were recorded high estimates of heritability and genetic advance, indicating that, additive gene action is governing these characters and that phenotypic selection will be effective for these traits". Similar results for grain yield, plant height, ear height was found by Sravanti et al [19]. Sesay et al [14] and Shrestha et al [19] were observed for grain yield.…”

Section: Estimation Of Heritability and Genetic Advancesupporting

confidence: 86%

“…shows that additive genes play a major role in expression of these characters, pedigree breeding method may useful for improvement of these characters. High genetic advance for grain yield was also found by Sesay et al [14], Sravanti et al [22] and Shrestha et al [19]. Oruganti et al [18] observed "high genetic advance for grain yield and plant height.…”

Section: Estimation Of Heritability and Genetic Advancesupporting

confidence: 58%

“…Similarly, Abhishek et al [24] reported "for number of kernels per row, days to maturity and 100-kernel weight". Sesay et al [14], Sravanti et al [22] and Shrestha et al [19] found similar results for "100-kernel weight. Low genetic advance was recorded by ear diameter (1.10%), number of kernel rows per ear (1.89%), shelling percentage (2.73%), ear length (4.85%), days to 50% tasseling (5.31%) and days to 50% silking (5.65%)".…”

Section: Estimation Of Heritability and Genetic Advancementioning

confidence: 60%

“…Indicating adequate variability present in such traits and provides scope for selection. High estimates of PCV and GCV was also reported for grain yield and ear height by Shrestha et al [19]. Similarly, Jilo et al [15], Mager et al [17], Rai et al [16], Oruganti et al [18], Yadav et al [20] and Thakur et al [21] were reported for grain yield.…”

Section: Phenotypic and Genotypic Coefficients Of Variationmentioning

confidence: 69%

“…Low genetic advance was also found by Sesay et al [14] and Abhishek et al [24] for days to 50% tasseling and silking, ear length and number of kernel rows/ear. Similarly, by Shrestha et al [19] "for days to 50% silking and days to 50% anthesis" and Sravanti et al [19] for "number of kernel rows per ear. Among the traits studied, grain yield, plant height and ear height were recorded high estimates of heritability and genetic advance, indicating that, additive gene action is governing these characters and that phenotypic selection will be effective for these traits".…”

Section: Estimation Of Heritability and Genetic Advancementioning

confidence: 92%

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Assessment of Genetic Variability, Heritability and Genetic Advance in Maize Genotypes (Zea mays L.)

Kumar,

Sunil,

Sekhar

et al. 2024

JEAI

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Aim: The aim of the present research work was to estimate the genetic variability, broad sense heritability and genetic advance for various yield and its contributing characters of 39 maize genotypes. Methodology: 39 maize genotypes were sown in randomized block design and replicated thrice to evaluate various genetic parameters. The data was recorded on twelve quantitative traits including days to fifty percent tasseling, days to fifty percent silking, days to maturity, plant height, ear height, ear length, ear diameter, number of kernel rows/ear, number of kernels/row, 100kernels weight, shelling % and grain yield/plant. Results: The mean sum of squares due to genotypes for each of the 12 traits under study indicated significant differences in analysis of variance. High to moderate genotypic and phenotypic coefficients of variation as well as genetic advance were observed in the traits yield per plant, plant height, ear height, number of kernels per row, and 100-kernel weight. These findings suggest that the heritability of these traits is most likely the result of additive gene effects and that selection in early generations may be effective for these traits. On the other hand, the remaining characters days to 50% tasseling, days to 50% silking, number of kernel rows per ear, and shelling percentage were recorded with high heritability with low genotypic and phenotypic coefficient of variation and genetic advance suggesting non-additive gene action for control of these traits which provides limited scope for improvement by selection. Conclusion: Among the characters studied, grain yield, plant height, and ear height had high heritability and high values of genetic advance indicating that these characters were controlled by additive gene action and so phenotypic selection is effective for improvement of these traits.

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Section: Estimation Of Heritability and Genetic Advancesupporting

confidence: 86%

Section: Estimation Of Heritability and Genetic Advancesupporting

confidence: 58%

Section: Estimation Of Heritability and Genetic Advancementioning

confidence: 60%

Section: Phenotypic and Genotypic Coefficients Of Variationmentioning

confidence: 69%

Section: Estimation Of Heritability and Genetic Advancementioning

confidence: 92%

See 3 more Smart Citations

Assessment of Genetic Variability, Heritability and Genetic Advance in Maize Genotypes (Zea mays L.)

Kumar,

Sunil,

Sekhar

et al. 2024

JEAI

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show abstract

Simultaneous selection of several tropical maize hybrids under acidic soil conditions

Zendrato,

Suwarno,

Marwiyah

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Acidic soils present a major abiotic challenge for various crops, including maize. Such an environment may cause nutrient unavailability, leading to poor growth and yield. Selection using multiple traits enables breeders to select maize hybrids that appeal to preference. This research aimed to obtain information on the genetic variability and predict the selection response of tropical maize hybrids based on multiple traits. Fifty-two maize hybrids, including six checks, were evaluated under acidic soils using an augmented RCBD with three blocks for the check varieties. The results showed that the genotypes significantly affected several agronomic traits and yield. Moderate to high e heritability was found for most traits. The greatest positive direct effect on yield was demonstrated by ear diameter, stay-green, and shelling percentage. G13, G14, G49, G50, G35, G39, G09, and G51 were selected maize hybrids using the MGIDI method. Selection using multiple traits is expected to have selection precision while considering its strengths and weaknesses. The selected genotypes may be subjected to a multi-environment trial to understand the influence of genotype by environment interaction.

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RETRACTED: Variability among maize (Zea mays L.) inbred lines for agro- morphological traits

Shrestha,

Ghimire,

Dhakal

et al. 2023

Preprint

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Variability analysis of maize inbred lines enables increased genetic gain in the maize breeding program. During spring to summer season (March to July) of 2022, we conducted a field experiment in Rampur, Chitwan, Nepal, where we evaluated 24 inbred lines of maize in α-lattice design with three replications to study genetic variability for growth and yield traits. The results of this study showed that growth and yield traits were subject to significant phenotypic and genotypic variation. The anthesis-silking interval (ASI) had the highest genotypic coefficient of variation (39.28%) and phenotypic coefficient of variation (42.81%) in comparison to other traits. Thousand-kernel weight was found to have 87% broad-sense heritability, while as ASI had 91% broad-sense heritability. The grain yield had the highest genetic advance (GA) value, which was followed by leaf area (86.21%). Four inbred line clusters were made using the Euclidean Average Linkage technique. The maximum distance (722.37) between cluster centroids in the cluster analysis suggests that clusters 2 and 4 had the greatest genetic dissimilarity. Inbred RML-76 (2262.2 kg ha-1) and RML-17 (2069.94 kg ha-1) produced the highest grain yields, respectively. The correlation analysis between grain yield and the number of kernel rows per ear (r = 0.79**), the number of kernels per kernel row (r = 0.79**), the length of the ear (r = 0.77**), and the thousand grain weight (r = 0.76**) was positive and significant.The results of our study suggested that maize productivity can be increased by utilizing genetic variability and indirect selection for traits with a high correlation to grain yield, high heritability, and high GA.

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Performance evaluation and genetic parameters estimation of multi-companies maize hybrids in Lamahi Dang, Nepal

Cited by 4 publications

References 59 publications

Assessment of Genetic Variability, Heritability and Genetic Advance in Maize Genotypes (Zea mays L.)

Assessment of Genetic Variability, Heritability and Genetic Advance in Maize Genotypes (Zea mays L.)

Simultaneous selection of several tropical maize hybrids under acidic soil conditions

RETRACTED: Variability among maize (Zea mays L.) inbred lines for agro- morphological traits

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