Gene Action and Combining Ability of Cellular Thermotolerance in Bread Wheat (<i>Triticum aestivum</i>L.)

El-Rawy, Mahmoud A.; Hassan, Mahdi; Omran, Mohamed; El-Defrawy, M. M.

doi:10.9787/pbb.2018.6.3.206

Cited by 7 publications

(3 citation statements)

References 35 publications

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“…And for the characteristic of the biological yield when the nitrogen element is sufficient, as the parents (3), ( 4), ( 5), ( 7), ( 8), ( 9) and ( 10) were positive, significant, and in the desired direction, and amounted to (0.756), (0.554) , (1.381) , (6.115) , (5.130) , (4.016) and (2.960) respectively, but when the nitrogen element was insufficient for the same trait, it gave parents (3), ( 4), ( 7) , (8) ( 9) and ( 10) positive and significant values, which amounted to (1.684), (1.013), (4.640), (5.477), (3.177) and (5.195), respectively. These results are consistent with the results of [18,17,9]. Table 3.…”

Section: Resultssupporting

confidence: 93%

Analysis of Genetic Architecture for Ten Genotypes of Bread Wheat Using Half Diallel Crosses Under Nitrogen Stress

Hassan,

Al-Jubouri

2023

IOP Conf. Ser.: Earth Environ. Sci.

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This study included 10 genotypes of bread wheat are M45, Yakora, Giza168, Sids 12, SK95, Misr2, Giemiza 9, Sahel 1, Sids14, and Silano. The genotypes (parents and F1 crosses) were cultivated at the research station of the Department of Field Crops of the College of Agriculture at the University of Kirkuk, during the season (2021-2022) in two separate experiments on sufficiency and insufficiency of the nitrogen element using a Randomized Complete Block Design (R.C.B.D) and with three replications, to estimate the general and specific combining ability, gene action and some genetic parameters. The results of the statistical and genetic analysis showed that there are highly significant differences for the general and specific combining ability values and that the ratio of the combining ability variance components to the specific combining ability variance components was less than the one for nitrogen sufficiency and insufficiency for all the studied traits. Sids14 variety excelled in its desirable effects of general combining ability, followed by Sr. (Sids12). The hybrid (M45 × Sids14) had the highest desired values for the effects of the special combining ability at nitrogen levels for all the traits studied, followed by the cross (Sahel 1 × Sids 12) also for all the traits studied except for The number of spikes plant-1 when there was insufficient nitrogen. The heritability broad sense was high with sufficient and insufficient nitrogen, while heritability narrow sense was high with sufficient nitrogen in the number of grains spike-1 and grains yield plant-1 (gm) and medium in The number of spikes plant-1 and the weight 1000 grains (gm) and the biological yield in the insufficient amount of the nitrogen element, the heritability narrow sense was medium in all studied traits. The average degree of dominance was greater than one when nitrogen was sufficient and insufficient, which indicates the existence of Over dominance, and the expected genetic advance as a percentage was low except for the number of grains spike-1 when nitrogen was sufficient and the grains yield plant-1 (gm) when nitrogen was insufficient, as it was medium. (11.908 and 12.250), respectively, these parents that are superior in the general combining ability with high phenotypic significance can be included in wheat breeding programs to produce hybrids that are superior in the specific combining ability that can be invested in the following generations with in the breeding programs to reach the best promising varieties with future nitrogen insufficiency.

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Section: Resultssupporting

confidence: 93%

Analysis of Genetic Architecture for Ten Genotypes of Bread Wheat Using Half Diallel Crosses Under Nitrogen Stress

Hassan,

Al-Jubouri

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…This is also confirmed by many articles that concur about assessment of the gene action and combining ability for different important traits in bread wheat (Ljubičić et al, 2017;Ayoob, 2020;Abro et al, 2021). Yield and its components under heat and drought-stressed and non-stressed conditions were elucidated (Mwadzingeni et al, 2018;Kamara et al, 2021;Semahegn et al, 2021), under irrigated and rainfed environments (Gupta et al, 2017;Saeed & Khalil, 2017), through several different ecological environments (Sharma et al, 2019), as well as some other morpho-physiological traits (Mohamed, 2019;Ahmad et al, 2020), heat tolerance (Jat et al, 2016), and cellular thermotolerance (El-Rawy et al, 2018). Such a study was conducted in durum wheat (Bajaniya et al, 2019).…”

Section: Discussionmentioning

confidence: 64%

Elucidation of gene action and combining ability for productive tillering in spring barley

Hudzenko

Поліщук

Лысенко

et al. 2022

Regul. Mech. Biosyst.

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The purpose of the present study is to identify breeding and genetic peculiarities for productive tillering in spring barley genotypes of different origin, purposes of usage and botanical affiliation, as well as to identify effective genetic sources to further improving of the trait. There were created two complete (6 × 6) diallel crossing schemes. Into the Scheme I elite Ukrainian (MIP Tytul and Avhur) and Western European (Datcha, Quench, Gladys, and Beatrix) malting spring barley varieties were involved. Scheme II included awnless covered barley varieties Kozyr and Vitrazh bred at the Plant Production Institute named after V. Y. Yuriev of NAAS of Ukraine, naked barley varieties Condor and CDC Rattan from Canada, as well as awned feed barley variety MIP Myroslav created at MIW and malting barley variety Sebastian from Denmark. For more reliable and informative characterization of barley varieties and their progeny for productive tillering in terms of inheritance, parameters of genetic variation and general combining ability (GCA) statistical analyses of experimental data from different (2019 and 2020) growing seasons were conducted. Accordingly to the indicator of phenotypic dominance all possible modes of inheritance were detected, except for negative dominance in the Scheme I in 2020. The degree of phenotypic dominance significantly varied depending on both varieties involved in crossing schemes and conditions of the years of trials. There was overdominance in loci in both schemes in both years. The other parameters of genetic variation showed significant differences in gene action for productive tillering between crossing Schemes. In Scheme I in both years the dominance was mainly unidirectional and due to dominant effects. In the Scheme II in both years there was multidirectional dominance. In Scheme I compliance with the additive-dominant system was revealed in 2019, but in 2020 there was a strong epistasis. In Scheme II in both years non-allelic interaction was identified. In general, the mode of gene action showed a very complex gene action for productive tillering in barley and a significant role of non-genetic factors in phenotypic manifestation of the trait. Despite this, the level of heritability in the narrow sense in both Schemes pointed to the possibility of the successful selection of individuals with genetically determined increased productive tillering in the splitting generations. In Scheme I the final selection for productive tillering will be more effective in later generations, when dominant alleles become homozygous. In Scheme II it is theoretically possible to select plants with high productive tillering on both recessive and dominant basis. In both schemes the non-allelic interaction should be taken into consideration. Spring barley varieties Beatrix, Datcha, MIP Myroslav and Kozyr can be used as effective genetic sources for involvement in crossings aimed at improving the productive tillering. The results of present study contribute to further development of studies devoted to evaluation of gene action for yield-related traits in spring barley, as well as identification of new genetic sources for plant improvement.

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“…Abiotic stresses, especially heat stress, is the major threats to sustainable wheat production. High-temperature stress not only affect growth and productivity of wheat (El-Rawy et al 2018) but also had a severe impact on grain quality through the reduced accumulation of carbohydrates, gluten, and proteins (Riaz et al, 2021). Heat stress had extensive damages almost in all developmental phases and organs of plant.…”

Section: Introductionmentioning

confidence: 99%

Half Diallel Analysis and Heat Stress Tolerance Indices for Grain Yield in Bread Wheat

Fouad

Mohamed

Salim

et al. 2022

Journal of Plant Production

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Heterosis and combining ability were determined in bread wheat using 6 x 6 half diallel analysis under normal and late planting dates during seasons 2019/2020 and 2020/2021 at Al-Matana Agricultural Research Station, Agricultural Research Center, Luxor governorate. Mean squares due to genotypes, parents, crosses, general (GCA) and specific combining ability (SCA) were significant or highly significant for the most traits. Days to heading (DH), plant height (PH), spike length (SL) under both dates in addition spikes/plant (NS/P), biological yield/plant (BY/P), harvest index (HI) and 1000 grains weight under normal date and grain yield/plant (GY/P), grains/spike (NG/S) under late date were controlled by additive gene action. The rest traits were controlled by dominance gene action. Under normal date, Sids 14 proved to be a good combiner for NS/P and BY/P. All crosses showed positive highly significant heterobeltiosis for GY/P. The crosses P1XP5 and P3XP4 showed significant or highly significant positive SCA for BY/P, GY/P, number and weight of grains/spike. Under late date, Gemmeiza 11 and Misr 2 proved as good combiner for BY/P, GY/P and NG/S. Significant positive GCA effects found for GY/P of Shandaweel 1. SCA effects were positive significant or highly significant for BY/P and GY/P of the four crosses P1XP3, P1XP5, P2XP6 and P4XP6. The crosses P2XP6, P3XP4, P3XP6 and P4XP6 showed highly significant heterobeltiosis for GY/P. It could be concluded that the two crosses of P1XP5 and P2XP6 were the most heat tolerance with high yield and could be used to obtain segregating populations to apply selection.

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Gene Action and Combining Ability of Cellular Thermotolerance in Bread Wheat (Triticum aestivumL.)

Cited by 7 publications

References 35 publications

Analysis of Genetic Architecture for Ten Genotypes of Bread Wheat Using Half Diallel Crosses Under Nitrogen Stress

Analysis of Genetic Architecture for Ten Genotypes of Bread Wheat Using Half Diallel Crosses Under Nitrogen Stress

Elucidation of gene action and combining ability for productive tillering in spring barley

Half Diallel Analysis and Heat Stress Tolerance Indices for Grain Yield in Bread Wheat

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