Evaluation of Bread Wheat (Triticum aestivum L.) Genotypes for Yield Potential and Related Traits Under High Temperature Stress Condition at Middle Awash, Ethiopia

Bayisa, Tadiyos; Habte, Ermias; Amanuel, Mihratu

doi:10.4172/2329-8863.1000410

Cited by 11 publications

(10 citation statements)

References 3 publications

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“…Therefore, earliness could be reflected as an escape approach and resilient adaptation under drought stress (Shavrukov et al 2017). Similar ranges and means were reported by Tadiyos et al (2019) for days to heading, days to maturity and grain filling period at middle awash under stress condition. The variation reported in this experiment was lower for days to heading and days to maturity in comparison to report of Abd-Allah et al (2018) who reported range of variation for days to heading (64.3 to 81.8 days) and days to maturity (106.5 to 115.5 days) in bread wheat under drought condition.…”

Section: Phenology and Growth Charactersupporting

confidence: 66%

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Assessment of genetic variability among bread wheat genotypes for agronomic and morphological traits under optimum and stress condition

Olbana¹,

Mekbib²,

Tadesse³

2021

Preprint

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Background Bread wheat is one of the most important cereal crops produced in almost all agro-ecologies of Ethiopia. Assessment of genetic variability in crop species is one of the major activities of plant breeding which helps to design breeding methods for further evaluation to meet the diversified goals. Methods The experiment was laid out in 8x8 simple lattice design under both optimum and stress conditions at middle Awash during 2019/20 growing season. Water stressed treatment was imposed by withholding three irrigation from 50% flowering up to physiological maturity. In the non-stressed water regime, plants were watered at every 10 days interval using furrow irrigation method. In order to avoid water leakage between treatments, the non-stressed water regime plots were established four meters away from the water stressed regime plots. Results Analysis of variance revealed highly significant (p ≤ 0.01) variation for all studied traits under both conditions. The variation observed for grain yield varied from 2.30-6.0 t ha− 1 and 1.01–4.36 t ha− 1 under optimum and stress conditions respectively. Genotypic and phenotypic coefficient of variation ranged from 3.88(days to maturity) to 20.84% (grain yield) and 4.76(days to maturity) to 24.73% (fertile tiller plant− 1) under optimum condition respectively. Under stress condition GCV and PCV ranged from 4.30(days to maturity) to 18.41% (fertile tiller plant− 1) and 5.19 (days to maturity) to 22.27% (fertile tiller plant− 1) respectively. Broad sense heritability and genetic advance as a percentage of mean ranged from 43(spike length) to 89% (biomass yield) and 6.51(days to maturity) to 40.33% (grain yield) under optimum condition respectively, whereas under stress condition it ranged from 23.40 (harvest index) to 86.1% (days to heading) and 5.69% (harvest index) to 33.34% (biomass yield) respectively. High heritability coupled with high genetic advance as a percentage of mean was recorded for biomass yield and grain yield under optimum condition, whereas for biomass yield and fertile tiller plant− 1under stress condition. Conclusions According to the mean performance of genotypes G3, G24, G26, G24 and G45 had yield advantage over checks under both conditions. Generally, the variation observed among the tested genotypes confirmed the possibility of improvement through selection and hybridization for the study area.

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Section: Phenology and Growth Charactersupporting

confidence: 66%

“…In this study, the genotypes with early heading also showed early maturity and late maturing ones exhibited similarly late days to heading. Several authors previously reported similar ranges and means for days to heading, days to maturity and grain filling period in bread wheat (Tadiyos et al 2019;Mihratu et al 2020).…”

Section: Phenology and Growth Charactermentioning

confidence: 64%

Assessment of genetic variability among bread wheat genotypes for agronomic and morphological traits under optimum and stress condition

Olbana¹,

Mekbib²,

Tadesse³

2021

Preprint

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“…The late heading variety was Obera, taking 63.25 days. In line with this result different authors have been supported significant differences among genotypes of bread wheat for days to heading (Gebre et al, 2017;Bayisa et al, 2019). Alemu et al (2016) also reported wide range of variation between 48 and 66 days for heading.…”

Section: Days To Headingmentioning

confidence: 62%

Performance Evaluation of Bread Wheat (Triticum Aestivum L.) Varieties for Grain Yield in BunoBedele, South West Oromia, Ethiopia

2022

AJITASR

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Bread wheat is cultivated in a wide range of high and mid-altitude areas of Ethiopia ranking 4th in area coverage and 2nd in productivity. Although many improved bread wheat varieties have been released nationally and regionally, these varieties are not well disseminated and popularized. In Western Ethiopia “Buno Bedele Zone”, there is no varieties evaluated by our Research center and farmers are using any variety when they did get which is risky if there would be an occurrence of new diseases and other stresses. To alleviate such a crop’s potential challenge, recently released bread wheat varieties were tested for their phenotypic performance to confirm their environmental adaptation using Randomized Complete Block Design in three replications for two consecutive years (2019/2020 to 2020/2021) on two separate Gechi and Chora districts. Quantitative traits such as plant height, spike length, Biomass, and grain yield were collected and analyzed using R Studio and Genstat 18th edition software’s. Qualitative trait such as days to maturity and days to heading were also collected. The combined analysis of variance indicated that the 12 tested varieties differed significantly for all traits. The highest combined mean grain yield was recorded by the variety “Liben” (4443kgha-1) followed by “Ogolcho” (4268kgha-1). Keywords: Bread: Wheat: Evaluation: RCBD: Variety: Ethiopia

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“…Heat-induced sterility might cause plants to flower earlier. If early blooming reduces propagule production or makes plants more vulnerable to seasonal stresses, such modifications may be expensive [55].…”

Section: Low and High-temperature Stressmentioning

confidence: 99%

Molecular evaluation and geographical adaptation of plants: A literature review

Rahman¹,

Ding²,

Nawab³

et al. 2023

World J. Adv. Res. Rev.

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Plants adapt locally to a wide range of environments to achieve ecological specialization. Maladaptation and costly fitness can result from local adaptation. However, these adaptations are not common, and the underlying molecular mechanisms are now unclear. The literature was investigated to recognize potential pathways underlying ecological specialization and local adaptation. Stressors such as drought, high heat, cold, floods, herbivores, and disease were investigated. The results were summarized by recent developments in regional adaptability and plant molecular biology. In addition to situations when modifications aren't a necessary part of adaptation, procedures that may lead to changes in fitness have been identified. In the future, it will be important to investigate local adaptation with a clear focus on molecular processes.

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Evaluation of Bread Wheat (Triticum aestivum L.) Genotypes for Yield Potential and Related Traits Under High Temperature Stress Condition at Middle Awash, Ethiopia

Cited by 11 publications

References 3 publications

Assessment of genetic variability among bread wheat genotypes for agronomic and morphological traits under optimum and stress condition

Assessment of genetic variability among bread wheat genotypes for agronomic and morphological traits under optimum and stress condition

Performance Evaluation of Bread Wheat (Triticum Aestivum L.) Varieties for Grain Yield in BunoBedele, South West Oromia, Ethiopia

Molecular evaluation and geographical adaptation of plants: A literature review

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