Genetic Variability and Heterosis in F1 and F2 Generations of Diallel Crosses among Seven Wheat Genotypes

El-Gammaal, A. A.; Yahya, Abdelaziz

doi:10.21608/jpp.2018.36631

Cited by 5 publications

(4 citation statements)

References 7 publications

(10 reference statements)

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“…Similarly, the results reported that there were highly significant estimates for both GCA and SCA combining ability effects, indicating the relative importance of additive and non-additive genetic variances for all studied characters. Similar results Zaazaa (2010), and El-Gammaal and Yahya (2018). The ratios of GCA /SCA were more than unity in all studied traits, indicating that additive gene effects were more important than dominance in the expression of these traits.…”

Section: Analysis Of Variancesupporting

confidence: 82%

Genetic analysis and heterosis for some quantitative characters in bread wheat

Nassar

Abd-El-Haleem²,

Haridy³

et al. 2022

Archives of Agriculture Sciences Journal

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This investigation was carried out to study the combining ability and heterosis in a half diallel mating among seven bread wheat varieties. Some traits i.e. days to heading, plant height, no. of spikes/plant, spike length, no. of grains/spike, 1000-grain weight and grain yield/plant were studied. The results showed that there were highly significant estimates of both GCA and SCA combining ability effects, indicating the relative importance of additive and non-additive genetic variances for all studied characters. The ratios of GCA/SCA were more than unity in all studied traits, indicating that additive gene effects were more important than dominance in the expression of these traits. Shandaweel-1 (P2) had positive significant for plant height and negative significant for days to heading, while it gave non-significant values for spikes number plant -1 , grains number spike -1 , 1000-grain weight and grain yield/ plant -1 . Gemmeiza-11 (P3) gave positive and highly significant GCA effects for days to heading, no. of grains/spike and grain yield/plant -1 and negative highly significant for no. of grains/spike and GW, while it had non-significant for PH. The parent Giza-171 (P4) was good combiner for PH and GW, while Sakha 93(P7) was the best combiner for DH, PH, GW and grain yield plant -1 . P3×P7 showed the maximum positive SCA effects, while P1×P2 displayed the highest negative SCA effects. Concerning grain yield/plant -1 , the crosses P3×P6 and P3×P7 gave the highest positive significant values for the heterosis over mid parent and better parent.

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Section: Analysis Of Variancesupporting

confidence: 82%

Genetic analysis and heterosis for some quantitative characters in bread wheat

Nassar

Abd-El-Haleem²,

Haridy³

et al. 2022

Archives of Agriculture Sciences Journal

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show abstract

“…number of spikes per plant, number of grains per spike, spike yield and 1000-grain weight. Significant heterosis was also found by El-Noorka et al (2013), Gammaal andYahya (2018) and Ayoob (2020).…”

Section: Heterosissupporting

confidence: 64%

“…The same conclusion was also drown by Masood and Kornstad (2000), Nazir et al (2005), Al-Hamdany (2010), Ammar et al (2014), Farhat and Darwish (2016), Khilwat et al (2017), El-Gammaal andYahya (2018), Ali et al (2020) and Abro et al (2021…”

Section: Specific Combining Ability (Sca) Effectmentioning

confidence: 61%

Gene action and genetic diversity in a six parental diallel crosses of wheat

Dawwam

El-Nahas

Ibrahim

et al. 2023

Menoufia Journal of Plant Production

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Six varieties of bread wheat were crossed in half diallel analysis. The fifteen F1's and their parents were evaluated. The experiment in a randomized complete block design with three replications at the Experimental farm, Faculty of Agriculture, Menoufia University Shebin El -Kom, Egypt during 2020/2021. The results cleared that genotypes, parents and the resultant fifteen crosses mean squares were found to be highly significant for all traits studied. Parent vs. crosses mean squares as an indication to average heterosis over all crosses were found to be highly significant for all traits studied. Variance of general combining ability was found to be highly significant for all traits studied. The parental variety Shandaweel-1 proved to be good general combiner for grain yield per spike and grain yield per plant. Also, Giza-171 was good general combiner in heading date, grain yield per spike. The most desirable SCA effects for grain yield per plant were detected by the seven hybrids i.e.

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“…Plant breeders that work with autogamous crops frequently collect genetic data from diallel cross progenies. Every plant breeding programme must start with insight knowledge regarding the ideal parental mix, focused on a high degree of heterotic response (El-Gammaal and Yahya, 2018). The capacity to combine information also helps geneticists understand the behaviour of the genes responsible for the sign of measurable traits with profitable predominance.…”

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confidence: 99%

Estimation of Genetic Variability in Relation to Heterosis and Combining Ability of Wheat from Subtropical and Temperate Zones

Ayyub,

Khan,

Malik

et al. 2024

SJA

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A fter maize in terms of production, wheat is the cereal grain with the second-highest global trade volume. It is the main crop and is regarded as the king of all cereal crops due to its ease of production, ecological suitability and great nutritional value. It is particularly rich in proteins (7-22%), carbohydrates, Abstract | The mechanism of genetic improvement for yield of food crops have become highly important for the plant breeders. It has been used for selection of suitable parents for true development of the hybrids. The current research was carried-out to determine heritability, general combing ability (GCA) and specific combing ability (SCA) during (Rabi Season 2018-19) at Directorate of Oilseed Crops, ARI Sariab, Quetta, Balochistan. The research trial was arranged in a Randomized Complete Block design (RCBD) with three repeats. The results from analysis of variance exhibits significant differences at (p<0.001 and 0.005) for all studied parameters. In hybrids, Benazir×Raskoo had the highest average value (92%) and in parents, TD-1 (89.66%) found best among hybrids. Similarly, correlation coefficient results indicated significant association among all genotypes for all characteristics. Most of the parameters among crosses showed highly positive significant heterosis. Similarly, parents and their crosses were significant for all the 14 parameters studied. It is concluded from this study, among parental lines Raskoo and TD-1 are good general combiner for the traits plant height, No. of tillers plant -1 , Harvest index, Spike density, spikelets spike -1 , Grains spike -1 , Fresh weight, Dry weight, Flag leaf area, thousand grain weight, Grain yield plant -1 and Tones per hectare as showed highly significant positive general combining ability, respectively. While among TD1 × Benazir and Umeed × Raskoo were observed as good specific combiner crosses in all parameters. Further, it is recommended that these genotypes be further included in breeding program to get more cultivar and hybrids combiner to enhance yield through yield contributing traits with additive genes and for further development of yield and yield related traits.

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Genetic Variability and Heterosis in F1 and F2 Generations of Diallel Crosses among Seven Wheat Genotypes

Cited by 5 publications

References 7 publications

Genetic analysis and heterosis for some quantitative characters in bread wheat

Genetic analysis and heterosis for some quantitative characters in bread wheat

Gene action and genetic diversity in a six parental diallel crosses of wheat

Estimation of Genetic Variability in Relation to Heterosis and Combining Ability of Wheat from Subtropical and Temperate Zones

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