Assessment of Variation in Agronomical Traits among Herbicide Tolerant M3 and M4 Maize Lines

Kariuki, John K.; Wesonga, John; Mwangi, Githiri S.

doi:10.9734/bpi/cras/v10/8037d

Cited by 2 publications

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“…This implied that an increase in tolerance, led to a lowered grain yield plant -1 . Williams et al (2014) reported similar results for herbicide tolerance with grain yield while Kariuki et al (2016) reported significant negative correlation for grain yield plant -1 in maize.…”

Section: Correlation Of Yield and Herbicide Tolerance With Other Agro...mentioning

confidence: 67%

Evaluation of genetic variability and interrelationships among M3 and M4 maize inbred lines in Kenya

Mallu¹,

Wesonga²,

Githiri³

et al. 2021

Adv. J. Plant Biol.

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The present study was conducted at Jomo Kenyatta University of Agriculture and Technology, Juja to assess the agronomic performance of mutant maize lines of 39 filial generation 3 (M3) and filial generation 4 (M4) maize lines and a check variety among agro-morphological traits with their association with grain yield. Data on various agro-morphological characters were recorded using morphological descriptors for maize and analyzed using Genstat Release 14.1. Data was also subjected to XLSTAT 2014 and DARwin 6.0.12 software for principal and cluster analyses. Results obtained differed significantly in herbicide tolerance days for both M3 and M4 (p≤0.01). However, plant height, maturity days, flag leaf length and width, grains ear-1, ear length, ear diameter and grain yield plant-1 differed significantly in M3 and M4 lines (p≤0.05). Grain yield plant-1 showed a strong significant positive correlation with anthesis days, plant height, grains ear-1 and ear diameter and length but negatively correlated with days to pollen shedding, tasseling, maturity and tolerance in M3 while flag leaf width, harvestable and total ears plant-1 showed positive and significant correlation but negatively correlated with tolerance days in M4. Principal component analysis showed variations among mutated maize lines in M3 and M4 with first seven principal components (PC) indicating that the first six PCs explained 78.69% and first six PCs contributing 71.28% respectively of the total variation. Cluster analysis showed three clusters and seven sub-clusters indicating differences in morphological diversity among the M3 inbred lines and two clusters with cluster one of hybrid 513 and three sub-clusters in cluster two of hybrid 520. Plant height, flowering days and ear length were crucial phenological traits determining grain yield among herbicide tolerant lines showing significant variability that could be considered in hybridization and development of herbicide tolerant hybrid genotypes in future maize breeding programmes.

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Section: Correlation Of Yield and Herbicide Tolerance With Other Agro...mentioning

confidence: 67%

Evaluation of genetic variability and interrelationships among M3 and M4 maize inbred lines in Kenya

Mallu¹,

Wesonga²,

Githiri³

et al. 2021

Adv. J. Plant Biol.

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“…(Kumar et al, 2015;Shrestha, 2016;Kandel et al, 2017 andKandel et al, 2018) also found differences significantly in maize hybrids for the studied traits. Range of variability reported in literature were: from 116.13 to 234.53 cm for plant height (Ali, 2014;Khan et al, 2017 andRamzan, 2018), from 33.65 to 102.43 cm for ear height (Izzam et al, 2017;Khan et al 2017 andRamzan, 2018), from 13.1 to 20.73 cm for ear length (Kariuki et al 2017;Izzam et al, 2017 andKhan et al, 2017). from 1.00 to 2.60 for ears per plant Khan et al, 2017 andRamzan, 2018) from 46.2 to 145.9 (g) for cob weight Ghimire et al, 2015;Rahman et al, 2017 andHassan et al, 2018) from 218.4 to 576.4 for kernels per ear (Khan et al 2018 andRamzan, 2018), from 12.00 to 16.00 for kernel rows per cob Izzam et al, 2017 andRamzan, 2018), from 15.20 to 39.80 for kernels per row (Ullah et al,2016 andKariuki et al, 2017), from 18.35 to 40.78 (g) for 100 grains weight (Turi et al, 2007;Izzam et al, 2017 andRamzan, 2018).…”

Section: Discussionmentioning

confidence: 96%

“…from 1.00 to 2.60 for ears per plant Khan et al, 2017 andRamzan, 2018) from 46.2 to 145.9 (g) for cob weight Ghimire et al, 2015;Rahman et al, 2017 andHassan et al, 2018) from 218.4 to 576.4 for kernels per ear (Khan et al 2018 andRamzan, 2018), from 12.00 to 16.00 for kernel rows per cob Izzam et al, 2017 andRamzan, 2018), from 15.20 to 39.80 for kernels per row (Ullah et al,2016 andKariuki et al, 2017), from 18.35 to 40.78 (g) for 100 grains weight (Turi et al, 2007;Izzam et al, 2017 andRamzan, 2018). From 41.19 (g) to 170.55 (g) for grain yield per plant (Kariuki et al 2017 andRamzan, 2018). In present study the ranges of the observed traits kernels per cob, plant height, number of ears, ear height, kernels rows per cob,100 grains weight and grains yield per plant were quite low from the ranges recorded in the literature, these characters can therefore be relied upon and simple selection could be carried out for additional improvement.…”

Section: Discussionmentioning

confidence: 99%

Genetic Variability Among Maize Genotypes for Grain Yield and Its Components Under Autumn Crop Season of Multan

et al. 2021

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The present research was conducted at the research area of the MNS-University of agriculture Multan Pakistan during kharif 2018, to determine the genetic variability for yield related traits of twenty-five maize (Zea mays L.) hybrids collected from International Maize and Wheat Improvement center (CIMMYT). The study was carried out in a randomized complete block design (RCBD) with two replications. Significantly variability (P≤0.01) among the hybrids were found for all yield related traits. Mean values for plant height were ranged from 82.61 to 223.72 (cm), ear height from 23.6 to 98.5 (cm), ear length from 9.8 to 21.8 (cm), number of ears from 1.005 to 1.85, cob weight from 67.63 to 179.3 (g), kernels per cob from 198.1 to 574.2, kernel rows per cob from 10 to 15.54, kernels per row 18.520 to 38.950, 100 grains weight from 18.3 to 34.4 (g) and grain yield per plant from 44.32 to 149.40 (g). Highest estimate of genotypic (GCV) along with phenotypic (PCV) coefficient of variations was recorded for ear height 43.07 45.13 %, plant height 30.20 and 33.23%, grain yield per plant 31.75 and 33.54 %, cob weight 27.46 and 29.34% and kernels per cob 24.13 and 25.13% respectively. Hybrid CZH132151 and CZH132150 performed better for yield related traits. All traits were significantly correlated with each other except number of ears per plant which was non-significantly correlated with most of the traits. The positive correlations suggest that the desired characters in these hybrids can be improved simultaneously in further maize breeding programs. Predicted on the results of current study, maize hybrid CZH132151 and CZH132150 could be suggested for commercial cultivation for the agro climatic condition of Multan.

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Assessment of Variation in Agronomical Traits among Herbicide Tolerant M3 and M4 Maize Lines

Cited by 2 publications

References 0 publications

Evaluation of genetic variability and interrelationships among M3 and M4 maize inbred lines in Kenya

Evaluation of genetic variability and interrelationships among M3 and M4 maize inbred lines in Kenya

Genetic Variability Among Maize Genotypes for Grain Yield and Its Components Under Autumn Crop Season of Multan

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