Investigation of combining ability and superiority percentages for yield and some related traits in yellow maize using line × tester analysis

Abdel-Moneam, M.; Sultan, M. S.; Abido, W. A. E.; Hadházy, Ágnes; Sadek, S.E.; Shalof, M.S.

doi:10.34101/actaagrar/1/4144

Cited by 3 publications

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“…These results suggest that a wide range of variability existed among parental lines and testers and the inbred lines behaved differently according to the tester which they crossed. These results are similar with those reported by Kustanto et al (2012), Kamara et al (2014), Gamea et al (2018), Abdel-Moneam et al (2020), El-Shamarka et al (2020 and Ismail et al (2020).…”

Section: Line × Tester Analysissupporting

confidence: 92%

“…Hence, the selection is possible to identify the most desirable crosses. These results are in harmony with those obtained by Murtadha et al (2016), Sadek et al (2017), Abdel-Moneam et al (2020), El-Shamarka et al (2020 and Ismail et al (2020). The differences between the check hybrids were not significant for all the studied traits, except days to 50% silking, plant height and No.…”

Section: Analysis Of Variancesupporting

confidence: 91%

“…The estimates of variances due to GCA, SCA and their interactions with locations (Table 3) showed that the SCA variance was higher than GCA variance for all studied traits, indicating that the non-additive effects had an important role in the inheritance of these traits. These results are in harmony with the findings of Abdel-Moneam et al (2020), El-Hosary (2020), Mohamed (2020), El-Shahed et al (2021) and Mousa et al (2021).…”

Section: Variance Componentssupporting

confidence: 90%

“…Hence, these crosses showed good potential for improving maize grain yield. Several investigators reported the same results (Osman 2014;Aslam et al 2017and Shushay et al, 2017El-Hosary et al 2018, Abdel-Moneam et al 2020…”

Section: Mean Performancementioning

confidence: 69%

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Evaluation and Classification of Yellow Maize Inbred Lines Using Line X Tester Analysis Across Two Locations

Ibrahim

Said

Kamara

2021

Journal of Plant Production

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Ten yellow maize inbred lines and three testers were top crossed in line × tester scheme in 2019 season. The resulted 30 top crosses with two check hybrids were evaluated at two locations in 2020 growing season to assess mean performance, general and specific combining ability and their interaction with locations as well as elucidate type of gene action. The recorded data were days to 50% silking, plant height, ear height, ear length, ear diameter, No. of rows/ear, No. of kernels/row and grain yield (ardab/fed). The results showed that, the mean squares due to locations (Loc), genotypes (G), crosses (Cr.), G × Loc and Cr. × Loc interactions were significant for all the studied traits. Highly significant differences were observed among the evaluated lines (L), testers (T) and its corresponding hybrids for all traits. non-additive gene action gave an important role in the inheritance of all the studied traits. The inbred lines L2, L4 and L6 showed the best desirable GCA effects for earliness, L6, L7 and L10 for shortness and L4, L5, L6, L7 and L9 for lower ear placement. Whereas the inbreeds L3, L6 and L7 were the best general combiners for grain yield. The crosses L2×T1, L8×T1, L1×T2, L7×T2, L3×T3, L6×T3 and L10×T3 had the best SCA effects for grain yield. The ten inbred lines were classified into three different heterotic groups using HSGCA method. These groups could be used for selecting the best parents for making crosses in maize breeding programs.

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Section: Line × Tester Analysissupporting

confidence: 92%

Section: Analysis Of Variancesupporting

confidence: 91%

Section: Variance Componentssupporting

confidence: 90%

Section: Mean Performancementioning

confidence: 69%

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Evaluation and Classification of Yellow Maize Inbred Lines Using Line X Tester Analysis Across Two Locations

Ibrahim

Said

Kamara

2021

Journal of Plant Production

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“…Concerning GY ard fed −1 , the cross L 5 × T 2 had the highest grain yield and was different significantly than the check hybrid followed by cross L 1 × T 2 . Hence, these crosses can be used for improving maize grain yield [14] and [3].…”

Section: Discussionmentioning

confidence: 99%

Combining abilities and genetic parameters for grain yield and some agronomic traits in maize (Zea mays L.)

Habiba

El-Diasty

Aly

2022

Beni-Suef Univ J Basic Appl Sci

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Background The improvement of maize hybrids relies on significant genetic variability among the inbred lines used and the degree to which it is transferred to progeny. Understanding the genetic parameters and heritability of traits in every population is an essential precondition for selection program. This study was designed to estimate the magnitude of genetic parameters and heritability of traits in line × tester mating design. Fifteen yellow maize inbred lines derived from different sources were crossed with two lines as tester i.e., Gm-1001 and Gm-1002 in 2019 summer season. During 2020 season, the resulted 30 crosses along with check hybrid SC-168 were evaluated in a yield trial at two locations: Gemmeiza and Sids Agric. Res. Station. Results The mean squares among two locations were highly significant for all studied traits except KR−1. The L1 and L3 had the best general combiners for GY ard fed−1. In addition, the T1 as a tester was a GCA effects good combiner for earliness, shorter plants and lower ear placement traits. While T2 was good combiner for grain yield and some of attributes. Crosses L5 × T1 and L7 × T2 had positive and significant SCA effects for grain yield. The GCA variances were higher than SCA variances for all studied traits except for ED trait, indicating that additive genetic variance played the major role than non-additive genetic variance in the inheritance of these traits. Generally, phenotypic coefficient of variability was higher than genotypic coefficient of variability for all studied traits, suggesting that there was an influence by environments in the expression of these traits. Recorded heritability percentage in broad sense ranged from low for (ear position%, no. of ears/100 plants, ear diameter and grain yield) traits, medium for (days to 50% silking, plant height, ear height and no. of kernels/row) traits to moderate high for ear length trait. Conclusion Our investigation concluded that most of the studied lines exhibited highly general combiners and the superior crosses were as a result of a good × good combiner for most of yield components traits.

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Line × Tester Analysis for Estimation Combining ability of some New Yellow Maize Inbred Lines for Grain Yield and Downy Mildew Resistance

Galal

2020

Journal of Plant Production

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A line×tester analysis was performed at Sakha Research Station; during summer 2017, using twenty new yellow maize inbred lines and two testers; inbred line Sk-4 and single cross SC180. The resulting 40 F1 crosses in addition to four check hybrids were evaluated in two trails during summer 2018. The first trail; for yield and other traits, was performed at Sakha and Sids Agricultural Research Stations. The second trial; for downy mildew disease resistance, was carried out under two levels of nitrogen fertilization in the disease nursery at Sakha Station. Significantly differences were detected between the two locations for the most studied traits and between the two nitrogen levels for downy mildew resistance. Significant of differences were observed among lines, testers and their interaction for all studied traits, except among testers for downy mildew resistance and line×tester interaction for plant height, ear height and downy mildew resistance. The non-additive gene effects were predominant in the inheritance of grain yield, ear length, ear diameter and downy mildew resistance. For general combining ability effects, the best general combiners were Sk5013/71 for grain yield and downy mildew resistance. While, the best tester was Sk-4 for grain yield and most traits. The desirable hybrids for specific combining ability effects were Sk5002/62×Sk-4, Sk5005/66×Sk-4 and Sk5021/74×SC180 for grain yield and Sk5004/65×SC180 for downy mildew resistance. Single cross Sk5013/71×Sk4, also three-way crosses Sk5010/69×SC180 and Sk5013/71×SC180 were superior for grain yield and high resistance to downy mildew resistance. These crosses could be use in maize breeding program.

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Investigation of combining ability and superiority percentages for yield and some related traits in yellow maize using line × tester analysis

Cited by 3 publications

References 0 publications

Evaluation and Classification of Yellow Maize Inbred Lines Using Line X Tester Analysis Across Two Locations

Evaluation and Classification of Yellow Maize Inbred Lines Using Line X Tester Analysis Across Two Locations

Combining abilities and genetic parameters for grain yield and some agronomic traits in maize (Zea mays L.)

Line × Tester Analysis for Estimation Combining ability of some New Yellow Maize Inbred Lines for Grain Yield and Downy Mildew Resistance

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