Estimates of Genetic Effects of Yield and Related Traits through Generation Mean Analysis in Bread Wheat

Gangopadhyay, Shipra

doi:10.18782/2320-7051.6220

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“…Therefore, this speed of obtaining complete information about the various analyzes is very important for genetic systems that provide information on tracking isolated generations, which leads to the possibility of reaching the goals of the breeding program with a quick result [7]. The analysis of generational averages contributes to estimating the superior effect, which was also shown by [8], which can identify the genetic structure of plants of the six generations, relied on the estimates of the three or six genetic parameters and the environmental factors during the growing season and the method of their estimation. These results in almost most of the traits [9], as they are consistent with the findings of [10,11], found a superiority of the average of the first generation clans in these traits compared to the two clans of the second generation and the two retrograde generations.…”

Section: Introductionmentioning

confidence: 99%

Genetic Analysis of Yield and its Components in Wheat (Triticum aestivum L.) using Generation Mean Analysis

Al-Mfarji,

Mahdi,

Al-Timimi

2023

IOP Conf. Ser.: Earth Environ. Sci.

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In this study, the six generational clans (P1, P2, F1, F2, B1, and B2) were used for two crosses of bread wheat. (Triticum aestivum. L), (the first cross was between the two cultivars (Milan * Abu Ghraib 3) and the second cross between (Milan * Sham 6). The six generations of the two crosses were cultivated according to the randomized complete block design in three replications for each of them. The averages of the generations were analyzed for the studied quantitative traits. For the six generations in the two crosses, the arithmetic averages and their standard errors showed that the values of the generations differed significantly from zero and in both crosses. F2 clans outperformed P1 in their performance and for some traits, and this indicates more frequency of the alleles responsible for this trait in the second generation clan and thus the expression of this trait. Through superior dominance as well as ultra-border genetic isolations, as well as the superiority of BC2 over F2 clans, which indicates more frequency of the alleles responsible for this trait in the second generation clan and for some traits. This means the dominance of the dominant variance that controls the inheritance of traits, and heritability in the narrow sense was low due to the low additional genetic variance.was significant in all traits except for the number of grains per spike and yield efficiency in the first cross, while the values of [d] were significant and positive for leaf area and protein content, which makes early selection beneficial for these traits, and were significant and negative for the traits of number of grains per spike and grain yield, and the dominance effects were [h] Positive and significant values for the characteristics of plant height, total number of tillers, number of spikes per plant, number of grains per spike, biological yield, grain yield, weight of 1000 grains, protein content and gluten content, while significant did not appear in the rest of the studied traits, in the first cross, and in the characteristics of plant height and total number of tillers The number of grains per spike, grain yield, harvest index, weight of 1000 grains, yield efficiency, protein content and gluten content, the second cross, and the superior effects (i) were the first contributors to the inheritance of these traits, followed by the part of the superior genetic action dominant x dominant (l) and then the superior genetic action additional × dominant (j) followed by the dominant genetic act and then the additive genetic action were significant in most of the traits studied in both crosses.

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Section: Introductionmentioning

confidence: 99%