Generation Mean Analysis of Two Bread Wheat Crosses Under Normal and Late Sowing Date Conditions

Koubisy, Y. S. I.

doi:10.21608/ejar.2019.111095

Cited by 3 publications

(19 citation statements)

References 16 publications

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“…A negative and significant (aa) interaction was found in PH, GYPP, DTH and wax content. These findings agree with previous results reported by Koubisy (2019) and Feltaous et al (2020).…”

Section: Gene Effectssupporting

confidence: 94%

“…However, it is better to postpone it to later segregating generations. These results are in agreement with those reported by Ljubicic et al(2016b), Al-Azab et al (2017, Koubisy (2019) and Feltaous et al (2020).…”

Section: Gene Effectssupporting

confidence: 94%

“…The divergence between parents of the hybrid Mut-2 × Sakha 9 is a prerequisite for studying gene action and inheritance of glaucousness, agronomic, and yield traits using generation mean analysis. A similar conclusion was reported by , Ataei et al (2017), Koubisy (2019), Salmi et al (2019) and Feltaous et al (2020).…”

Section: Mean Performancesupporting

confidence: 88%

“…These results are in harmony with earlier results reported by Bilgin et al (2016) The additive (a) gene effects were positive significance (P≤0.05 or 0.01) for PH, SPP, and wax content and negative significance (P≤.01) for SL, GYPP, DTH, DTM and GPS, indicating possible improvement of these traits through selection in early segregating generations. Similar results for yield and its components were reported by Ataei et al (2017), Al-Azab et al (2017, Patel et al (2018), Mahpara et al (2018), Soliman (2018), Koubisy (2019) and Feltaous et al (2020). In addition, the evidence of additive gene action influencing glaucousness was also reported in bread wheat (Al-Bakry, 2010).…”

Section: Gene Effectssupporting

confidence: 87%

“…Significance of additive x dominance interaction suggests that it is preferred to delay selection for improving such traits to later segregating generations. These results are in harmony with Patel et al (2018), Soliman (2018), Koubisy (2019) and Feltaous et al (2020). Dominance x dominance interaction (dd) effects were found positive and significant (P≤0.01) for PH, grain GYPP, DTH, GPS and wax content, and negative significance (P≤0.01) for SL and SPP (Table 4).…”

Section: Gene Effectssupporting

confidence: 83%

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Genetic parameters controlling the inheritance of glaucousness and yield traits in bread wheat

et al. 2022

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Wheat breeders frequently use generation mean analysis to obtain information on the type of gene action involved in inheriting a trait to choose the helpful breeding procedure for trait improvement. The present study was carried out to study the inter-allelic and intra-allelic gene action and inheritance of glaucousness, earliness and yield traits in a bread wheat cross between divergent parents in glaucousness and yield traits; namely Mut-2 (P1) and Sakha 93 (P2). The experimental material included six populations, i.e. P1, P2, F1, F2, BC1, and BC2 for this wheat cross. A randomized complete block design with three replications was used, and a six parameters model was applied. Additive effects were generally more critical than dominance for all studied traits, except for plant height (PH) and grain yield/plant (GYPP). The duplicate epistasis was observed in spike length; SL, spikes/plant; SPP and days to heading; DTH. All six types of allelic and non-allelic interaction effects controlled SL, GYPP, DTH and glaucousness. All three types of epistasis, i.e. additive x additive, additive x dominance, and dominance x dominance, are essential in determining the inheritance of four traits (SL, GYPP, DTH and glaucousness). Dominance × dominance effects were higher in magnitude than additive × dominance and additive × additive in most traits. The average degree of dominance was minor than unity in six traits (glaucousness, grains/spike, spike weight, days to maturity, 100-grain weight and SL), indicating partial dominance and selection for these traits might be more effective in early generations. Meanwhile, the remaining traits (PH, SPP, GYPP and DTH) had a degree of dominance more than unity, indicating that overdominance gene effects control such traits and it is preferable to postpone selection to later generations. The highest values of narrow-sense heritability and genetic advance were recorded by glaucousness trait followed by SL and SPP, indicating that selection in segregating generations would be more effective than other traits.

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“…A negative and significant (aa) interaction was found in PH, GYPP, DTH and wax content. These findings agree with previous results reported by Koubisy (2019) and Feltaous et al (2020).…”

Section: Gene Effectssupporting

confidence: 94%

Section: Gene Effectssupporting

confidence: 94%

Section: Mean Performancesupporting

confidence: 88%

Section: Gene Effectssupporting

confidence: 87%

Section: Gene Effectssupporting

confidence: 83%

See 3 more Smart Citations

Genetic parameters controlling the inheritance of glaucousness and yield traits in bread wheat

et al. 2022

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Esteimats of the Genetic Parameters for Yield and its Attributes of Wheat under Optimum and Late Sowing Dates

El-Nahas

El–Gabry

2021

Journal of Plant Production

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Generation mean analysis was used for study the natural of gene action for yield and its attributes in three hybrids of bread wheat. Six parameters model was used in three wheat hybrids under optimum sown (25 th Nov.) and late sown (25 th Des.). The results cleared that the (P1, P2, F1, F2, Bc1 and Bc2) mean values in late sown were less than the optimum sown for all the studied characters in all hybrids. Heterosis relative to midparent and better parent was found to be positive significant for most characters under optimum and late sowing dates. The relative consequence of additive and dominance effects differed for characters in all hybrids under two different sowing dates. Dominance effects were generally more important than additive for most the characters in all the studied hybrids under two different sowing dates. Indicating, dominant genes played a part in the inheritance of these characters. Dominance × dominance gene interaction was higher in extent than additive × additive and additive × dominance in most the studied traits under two different sowing dates. Indicating, these traits are greatly influenced by dominance and dominance x dominance interactions. Therefore, it is approved to lateness selection to late segregating generations to raise homozygosity. Heritability values in narrow sense were moderate to high for all the studied characters in all hybrids under two different sowing dates. Genetic advance was ranged from low to high for all characters in all hybrids under two different sowing dates.

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Estimation of Gene Interaction for Grain Yield and Yield Traits in Rabi Sorghum [Sorghum bicolor (L.) Moench]

Verma,

Biradar,

Ayyanna

et al. 2023

IJECC

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Generation mean analysis is the potent tool to provide information about different types of gene actions and interactions. To determine the inheritance pattern and gene action of 10 grain yield and grain related quantitative traits, six generations of the four cross combinations viz., BJV44 × DSMR8, BJV44 × DSMR4, PKV Kranti × DSMR8 and PKV Kranti × DSMR4 were studied employing generation mean analysis during rabi of 2020. Interestingly, both additive and dominant gene action were prevalent for all the traits in the cross BJV44 × DSMR8, whereas the other three crosses exhibited additive for some traits and dominant gene action for some traits. Most of the traits in the majority of the crosses displayed the duplicate type of gene interaction and realized their suitability for the population improvement program. Some crosses viz., BJV44 × DSMR4 and PKV Kranti × DSMR4 exhibited complementary gene interaction and were found suitable for heterosis breeding for grain yield/plant.

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Generation Mean Analysis of Two Bread Wheat Crosses Under Normal and Late Sowing Date Conditions

Abstract: arents (P1&P2), F1, F2 and first generation of backcrosses (BC1&BC2) of two bread wheat crosses i.e., Sids 12 x Gemmeiza 11 (C1) and Misr 2 x Sids 1 (C2), were grown in two experiments {normal sowing date 20 th Nov. (N) and late sowing date 20 th Dec.

Cited by 3 publications

References 16 publications

Genetic parameters controlling the inheritance of glaucousness and yield traits in bread wheat

Genetic parameters controlling the inheritance of glaucousness and yield traits in bread wheat

Esteimats of the Genetic Parameters for Yield and its Attributes of Wheat under Optimum and Late Sowing Dates

Estimation of Gene Interaction for Grain Yield and Yield Traits in Rabi Sorghum [Sorghum bicolor (L.) Moench]

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