Gene effects for different metric traits under normal and high temperature stress environments in wheat (T. aestivum L. Em Thell)

Sheikh, Sameena; Behl, R. K.; Dhanda, S. S.; Kumar, Ashwani

doi:10.1071/sp09007

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…days to maturity, plant height and grain yield plant -1 , indicating that the inheritance of these traits was affected by the duplication effect of epistatic genes. Similar results were given by Sheikh et al (2009). Generally, the additive and additive × additive effects were more important than dominance gene effect for most studied traits in the three crosses.…”

Section: Gene Actionsupporting

confidence: 80%

Inheritance of Stripe Rust Resistance in Adult Plants and Some Economic Traits of Some Bread Wheat Crosses

Elmassry

Darwish

Elkot

2020

Journal of Plant Production

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The experimental field work was conducted at Gemmeiza and Sakha Agricultural Research Stations, (ARC), Egypt, in 2017Egypt, in /18, 2018Egypt, in /19 and 2019 seasons to study the genetic behavior of grain yield and yellow rust resistance in three bread wheat crosses. The Genetic materials included (P1, P2, F1, F2, BC1 and BC2) of Gemmeiza 11× Giza168 (cross 1), Sids12 × Shandaweel1 (cross 2) and Gemmeiza 12 × Shandaweel 1 (cross 3). Significant differences were observed among most genotypes for measured traits. Additive gene effects were negative and highly significant in the first and the third crosses for No. days to maturity and grain yield plant -1 and in the second cross for No. spikes plant -1 . However, it was positive and highly significant in the second cross for 100-kernel weight, yellow rust resistance and grain yield plant -1 . Narrow sense heritability was ranged from moderate to high values for plant height, yellow rust resistance and No. kernels spike -1 in all studied crosses. These results could be employed to improve both yield and rust resistance in Egyptian wheat breeding program.

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Section: Gene Actionsupporting

confidence: 80%

Inheritance of Stripe Rust Resistance in Adult Plants and Some Economic Traits of Some Bread Wheat Crosses

Elmassry

Darwish

Elkot

2020

Journal of Plant Production

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“…Due to these results, it is concluded that selection in orde r to improve of desired genotypes should be done for next generations. Similar findings were found by Sheikh et al (2009), Eshghi Akhundova (2010) and Aykut et al (2011) whom previously reported that some sort of intermating followed by selection in late r generations can be advisable to improve of traits governed by dominance gene effects with prevalence of duplicate epistasis, while complementary epitasis type of gene effects gave similar signs of (h) and (L) for all other traits in both crosses. Similar results have been reported by Khattab et al (2010).…”

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confidence: 86%

INHERITANCE OF SOME QUANTITATIVE CHARACTERS IN BREAD WHEAT (Triticum aestivum L.)

Ali¹

2017

Mesopotamia Journal of Agriculture

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Genetic analysis was performed using the joint scaling test based on three and six parameter models. The results revealed that inheritance of the traits could not be explained by additive-dominance model. Additive and dominance gene effects were significant for most traits in both crosses due to different origins of the parents. The values of (dominance × dominance) were greater than (additive × additive) and (additive × dominance) of most studied traits in both crosses in addition to greater values of dominance gene effect than the additive in most traits. It was suggested that selection all of them should be effective in advanced segregating generations due to epistatic gene effects. High narrow and broad sense heritability (0.94) was obtained for flag leaf area in Mexipak × Acsad-8 cross, while high narrow sense heritability (0.86) and high broad sense heritability (0.98) were obtained for spike length and flag leaf area in Ipa-99 × Attla, so the early generation testing and selection might be recommended for these traits. Heterosis was found to be positive for most traits in both crosses.

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“…There was a significant negative magnitude for DH, DA, DM, GFD, GY under heat stress conditions which indicated the importance of dominance gene action for controlling these characters. Previously significant and positive dominance gene action was observed in kernels/spike and 100-kernel weight (Hamam 2013); biomass per plant at anthesis (Irshad et al 2014); days to 50% flag leaf emergence, days to anthesis, plant height, peduncle length, number of tillers per plant, number of spikelets per spike, number of grains per spike, 1000-grain weight, awn length, biological yield per plant, grain yield (Sheikh et al 2009) The estimates of epistatic gene effects showed additive × additive (i) epistatic gene effects giving positive effects in the expression for HSI, GFD, TGW, GWS, GY in most of the crosses under LS conditions while it showed the negative effect for DM. Under TS conditions these traits showed negative additive × additive epistatic effects.…”

Section: Discussionmentioning

confidence: 99%

Genetics of grain yield and its components in wheat under heat stress

Sareen

Bhusal

Singh

et al. 2018

Cereal Research Communications

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Heat stress is a matter of a great concern for the wheat crop. Heat stress usually either hastens crop development or shortens the grain filling duration, which severely reduces grain yield. Being a complex trait, understanding the genetics and gene interactions of stress tolerance are the two primary requirements for improving yield levels. Genetic analysis through generation mean analysis helps to find out the nature of gene actions involved in a concerned trait by providing an estimate of main gene effects (additive and dominance) along with their digenic interactions (additive × additive, additive × dominance, and dominance × dominance). In the present investigation, we elucidated the inheritance pattern of different yield contributing traits under heat stress using different cross combinations which could be helpful for selecting a suitable breeding strategy. Thus six generations of five crosses were sown normal (non-stress, TS) and late (heat stress, LS) in a randomized block design with three replications during two crop seasons. The model was not adequate for late sown conditions indicating the expression of epistatic genes under stress conditions. The traits i.e. Days to heading (DH), Days to anthesis (DA), Days to maturity (DM), Grain filling duration (GFD), Grain yield (GY), Thousand grain weight (TGW), Grain weight per spike (GWS) and Heat susceptibility index (HSI) under heat stress conditions were found under the control of additive gene action with dominance × dominance interaction, additive gene action with additive × dominance epistatic effect, dominance gene action with additive × additive interaction effect, additive and dominance gene action with dominance × dominance interaction effect, additive gene action with additive × dominance epistatic effect, additive gene action with additive × additive interaction effect and dominance gene action with additive × additive interaction effect, respectively.

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Gene effects for different metric traits under normal and high temperature stress environments in wheat (T. aestivum L. Em Thell)

Abstract: The

Cited by 3 publications

References 6 publications

Inheritance of Stripe Rust Resistance in Adult Plants and Some Economic Traits of Some Bread Wheat Crosses

Inheritance of Stripe Rust Resistance in Adult Plants and Some Economic Traits of Some Bread Wheat Crosses

INHERITANCE OF SOME QUANTITATIVE CHARACTERS IN BREAD WHEAT (Triticum aestivum L.)

Genetics of grain yield and its components in wheat under heat stress

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