Estimation of Heterosis and Heritability in Bread Wheat (Triticum aestivum L.)
TLDR
Six varaieties of bread wheat Triticum aestivum L and their half diallel crosses were used to estimate heterosis, broad and narrow sense heritability for the following quantitative characters; most hybrids appeared significant and desirable values for heterosis.Abstract:
Six varaieties of bread wheat Triticum aestivum L.(Sham 4, Adnaniya, Iba 95, Tamoz 2, Eratom, Abo-Graib) and their half diallel crosses were used to estimate heterosis, broad and narrow sense heritability for the following quantitative characters: heading time, number of tillers per plant, plant height, flag leaf area, number of spikes per plant, spike length, number of spiklet per spike, number of grains per spike, 100 grain weight, grain yield per plant and the harvest index. Most hybrids appeared significant and desirable values for heterosis. The broad sense heritability was high for plant height, spike length and number of spiklet per spike while, it was modrate for harvest index, and low for heading time, number of tillers per plant, flag leaf area, number of spike per plant, number of grains per spike, 100 grain weight and grain yield per plant. The narrow sense heritability was high for plant height and harvest index, and moderate for heading time, spike length, number of spiklet per spike,100 grains weight while it was low for number of tillers per plant, flag leaf area, number of spike per plant, number of grains per spike and grain yield per plant.read more
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Inter-Generation Correlation and Regression Analysis in F2 and F3 Generations of Wheat
TL;DR: Results revealed that significant positive inter-generation correlation and regression was observed for character like plant height in all four crosses and grain yield per plant was found significant in crosses Raj3765 x Syn 27 and WH1105 x Syn27, indicating the chances of selecting high yielding genotypes at early generations.
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Regression Analysis, Heritability and Inter-Generation Correlation in Wheat (Triticum aestivum L.)
TL;DR: The significant and positive intergeneration correlation and regression was observed for character like grain yield per meter, grain length, plant height, harvest index, grain weight per spike, grain breadth, number of tillers per meter and biological yield per Meter, indicating the chances of selecting high yielding segregants at early generations.
Journal ArticleDOI
Estimate of Genetic Parameters of Grain Yield and Some Agronomic Traits in Durum Wheat Using Diallel Crosses
TL;DR: Five varieties of durum wheat were crossed in full diallel fashion and two crosses had the highest positive heterosis for the most studied traits including grain yield, which showed highly significant difference among genotypes for all studied traits.
References
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Journal Article
Genetic variability, association and diversity studies in wheat (triticum aestivum l.) germplasm
TL;DR: Seventy local and exotic wheat genotypes grown in Faisalabad, Pakistan during the Rabi season of 2005/2006 were evaluated for variability parameters, correlations and path coefficients, revealing that number of productive tillers per plant and number of grains per spike had the highest direct effect on grain yield per plant.
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Quantitative inheritance of some wheat plant traits
TL;DR: The objective of this study was to estimate gene effects and genetic variability for some quantitative traits of two winter wheat crosses by generation mean analysis, and in most cases a digenic epistatic model was sufficient to explain variation in generation means.
Genetic heritability for grain yield and its related characters in spring wheat (triticum aestivum l.)
TL;DR: Seven F3 progenies and their 8 parental lines of spring wheat were evaluated for some genetic parameters and the highest heritability with more genetic advance for plant height, number of spikelets per spike and number of grains per spike were observed in progeny Khirman x RWM9313.
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TL;DR: Character association and component analysis studies in bread wheat germplasm showed positive and significant correlation with effective tillers per plant, grains per spike, spike length and 1000 grain weight both at genotypic and phenotypic level in 2006–2007 and 2007–2008 crop seasons.
Genetical Analysis of some Quantitative Traits in Bread Wheat (Triticum aestivum L).
TL;DR: Results revealed that epistatic gene effect cannot be ignored when establish a new breeding program to improve wheat populations for economic traits and existence of over-dominance towards the better parent for all traits except No.