Assessment of Genetic Variability of a Set of Maize Inbred Lines for  Drought Tolerance under Temperate Conditions

Gazal, Asima; Nehvi, F. A.; Lone, Ajaz A.; Dar, Z. A.

doi:10.20546/ijcmas.2017.612.275

Cited by 9 publications

(10 citation statements)

References 11 publications

(12 reference statements)

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“…Hundred grain weight and protein content showed moderate GCV and PCV, which allowed for the average chances for selection. Similar results were reported by Sumathi et al(2005) and Gazal et al(2017). Low GCV and PCV were noted for days to 50 per cent tasseling (3.86% and 6.03%), days to 50 per cent silking (3.80% and 5.65%) and cob girth (4.99% and 7.83%) suggesting need of creation of variability either by mutation or hybridization followed by selection.…”

Section: Resultssupporting

confidence: 89%

“…Hence, protein content manifested high heritability united with high GAM suggested the predominance of additive genes in the expression of the character. Gazal et al(2017) also noticed high heritability united with high GAM for this character. Besides, grain yield and biological yield per plant showed moderate heritability associated with high genetic gain, indicating that the character was governed by additive genes and the moderate heritability was exerted due to environmental effects.…”

Section: Resultsmentioning

confidence: 77%

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Genetic variability of quantitative characters over diverse environments in maize inbred lines

2021

EJPB

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Twenty maize inbred lines procured from Maize Research Station, Bhiloda were evaluated during Kharif, 2019 over three diverse environments. Variability studies results from pooled environment revealed that PCV was higher in magnitude than GCV for all the characters studied. Grain yield per plant manifested a higher magnitude of GCV and PCV (34.07 and 47.76 %). Heritability estimates ranged from 21.18 per cent for harvest index to 99.04 per cent for protein content. Grain yield and biological yield per plant manifested moderate heritability estimates united with a high genetic gain of 50.06 and 45.03 per cent, respectively. At both genotypic and phenotypic levels, grain yield per plant showed a strong and positive association with plant height, ear height, cob length, cob girth, hundred grain weight, biological yield per plant and harvest index. Genotypic path studies showed the biological yield per plant had the highest and direct positive effect on grain yield per plant followed by harvest index, ear height, cob length and cob girth.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 77%

Genetic variability of quantitative characters over diverse environments in maize inbred lines

2021

EJPB

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“…A medium level of the coefficient of variation implies an equal influence of additive and nonadditive gene action. Medium levels of genotypic coefficients of variance were found for some traits, as reported by several earlier findings [ 4 , 31 , 32 ].…”

Section: Resultssupporting

confidence: 85%

Genetic Variation and Genotype by Environment Interaction for Agronomic Traits in Maize (Zea mays L.) Hybrids

Alam

Rahman²,

Ahmed

et al. 2022

Plants

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In order to develop high-yielding genotypes of adapted maize, multilocation trials of maize were performed including forty-five maize hybrids exploiting genetic variability, trait associations, and diversity. The experiments were laid out in an RCB design and data were recorded on eight yield and yield-contributing traits, viz., days to anthesis (AD), days to silking (SD), anthesis–silking interval (ASI), plant height (PH), ear height (EH), kernels per ear (KPE), thousand-kernel weight (TKW), and grain yield (GY). An analysis of variance (ANOVA) showed significant variation present among the different traits under study. The phenotypic coefficient of variance (PCV) showed a higher value than the genotypic coefficient of variance (GCV), indicating the environmental influence on the expression of the traits. High heritability coupled with high genetic advance was found for these traits, indicative of additive gene action. The trait associations showed that genotypic correlation was higher than phenotypic correlation. Based on genetic diversity, the total genotypes were divided into four clusters, and the maximum number of 16 genotypes was found in cluster IV. Among the eight yield and yield-contributing traits, PH, ASI, EH, and TKW were the important traits for variability creation and were mostly responsible for yield. Genotypes G5, G8, G27, G29, and G42 were in the top ranks based on grain yield over locations, while a few others showed region-centric performances; all these genotypes can be recommended upon validation for commercial release. The present findings show the existence of proper genetic variability and divergence among traits, and the identified traits can be used in a maize improvement program.

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“…Maize (Zea mays Linn.) is an essential component of agricultural food, livestock feed and many essential industrial products (Gazal et al, 2017). In Asia, this crop is considered one of the most important food and feed plants that provide a source of income and energy for millions of farmers (Shiferaw et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects and Recovery of Maize (Zea mays Linn) to Waterlogging Imposed at Early Seedling Stage

Esteban¹,

Baldo²

2023

ASD

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Background: This study aimed to determine the effects of different waterlogging duration imposed at the V2 leaf stage and assess the impact of waterlogging on maize growth during the recovery period, identify susceptible and tolerant lines and traits conferring tolerance to waterlogging at the early seedling stage. Methods: The study was arranged in a Split-plot RCBD and replicated three times. Intercharacter and waterlogging durations to maize growth parameters were correlated to determine the degree of the linear relationship using Pearson’s product moments correlation and simple linear regression analysis. Result: The result shows that the different waterlogging durations negatively influenced the maize growth parameters regarding plant height and root length. These parameters became shorter and did not recover after waterlogging stress was removed. Therefore, plant height and root length are traits sensitive to waterlogging stress. The USM Var 10, BRK and T. Monkayo obtained a high degree of leaf greenness, heaviest shoot and root dry matter compared to other evaluated maize lines. Maize with greener leaves, taller plant height, longer root length and high total dry matter accumulation could be a good criterion in selecting a parent material in the maize waterlogging breeding program.

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Assessment of Genetic Variability of a Set of Maize Inbred Lines for Drought Tolerance under Temperate Conditions

Cited by 9 publications

References 11 publications

Genetic variability of quantitative characters over diverse environments in maize inbred lines

Genetic variability of quantitative characters over diverse environments in maize inbred lines

Genetic Variation and Genotype by Environment Interaction for Agronomic Traits in Maize (Zea mays L.) Hybrids

Effects and Recovery of Maize (Zea mays Linn) to Waterlogging Imposed at Early Seedling Stage

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