Agro-Physiological Characterization of Durum Wheat Genotypes Under Drought Conditions

Mohammadi, Reza; Etminan, Alireza; Shoshtari, L.

doi:10.1017/s0014479718000133

Cited by 27 publications

(23 citation statements)

References 33 publications

(42 reference statements)

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“…Based on across-year analyses, HT, PH, and TGW are the most promising traits for indirect selection. Similar data were obtained by Mohammadi et al (2018) for 25 durum wheat breeding genotypes under drought conditions, and by González-Ribot et al (2017) for a durum wheat collection. The negative relationship between GY and PC and GC might be due to opposite pleiotropic gene effects, caused by the major bio-energetic requirements for synthesis of protein and then carbohydrate (Blanco et al, 2006).…”

Section: Discussionsupporting

confidence: 75%

Phenotypic Parent Selection Within a Khorasan Wheat Collection and Genetic Variation in Advanced Breeding Lines Derived by Hybridization With Durum Wheat

Iannucci¹,

Codianni²

2019

Front. Plant Sci.

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Tetraploid relatives of durum wheat (Triticum turgidum L. subsp. durum (Desf.) Husnot) represent an important reservoir of economically useful genes for development of new wheat cultivars. Two field experiments were conducted at Foggia (Italy), in the 2004 to 2006 and 2012 to 2015 growing seasons. In the first, 77 Khorasan wheat [T. turgidum subsp. turanicum (Jakubz.) Á. Löve & D. Löve] accessions from 23 countries of four geographic regions (Africa, Asia, Europe, and others) were evaluated to explore breeding opportunities. Seven agronomic traits were used to describe the diversity among the accessions: days to heading (HT), plant height (PH), grain yield (GY), specific weight (SW) as an indication of the density of the grain, 1000-grain weight (TGW), protein content, and gluten content. The total Shannon–Weaver diversity index was used to estimate phenotypic diversity, which ranged from monomorphic for PC (0.39) to highly polymorphic for TGW (0.67). A high level of total variation (87%) was attributed to the within-region diversity. The accessions grouped into six clusters, and seven elite accessions were selected as parents for crosses with durum wheat. In the second experiment, ten parents (seven Khorasan accessions and three durum wheat cultivars) and 790 F6 recombinant inbred lines (RILs) from the different T. durum × T. turgidum subsp. turanicum crosses were included to study genotypic and phenotypic variability of the same agronomic traits, plus the susceptibility index (SI) for disease. The genotypic coefficients of variation were lower than the phenotypic ones for all of the traits, which showed an environment effect on expression of these traits. High broad-sense heritability (h2 b > 86%) was recorded for all traits, and high h2 b coupled with high genetic gain as percentage of the mean (ΔG) was observed for HT, PH, GY, and SW, and for SI. This suggests that selection for these traits will provide good responses. Four principal components explained 70% of the total variation, and the genotypes were clustered into 20 groups. According to the results, some lines could be tested in varietal registration trials, and/or could be used as a significant breeding pool for durum wheat cultivar development in Mediterranean area.

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Section: Discussionsupporting

confidence: 75%

Phenotypic Parent Selection Within a Khorasan Wheat Collection and Genetic Variation in Advanced Breeding Lines Derived by Hybridization With Durum Wheat

Iannucci¹,

Codianni²

2019

Front. Plant Sci.

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“…potentially be a subject of many environmental constraints which can have adverse effects on its yield and yield stability (Mohammadi et al, 2018). Over the past years, durum wheat production has been fluctuating significantly due to climate change and drought in particular (Boussakouran et al, 2019).…”

Section: ____________________________________________________________ ___________________________________________________________________mentioning

confidence: 99%

“…Drought acts on the PSII reaction centers of the photosynthetic system and the stomata (Paknejad et al, 2007), thus inducing reductions in grain yields (Jedmowski et al, 2013). Mohammadi et al (2018) argue that fluorescence measurements can help improve the overall agricultural productivity and grain yield of durum wheat under fluctuating climatic conditions. Direct and indirect changes in fluorescence induction kinetics following abiotic stress have been studied in a number of crops (Baker et al, 2001).…”

Section: ____________________________________________________________ ___________________________________________________________________mentioning

confidence: 99%

Chlorophyll Fluorescence and Drought Tolerance in a Mapping Population of Durum Wheat

Larouk

Gabon

Kehel³

et al. 2021

Contemporary Agriculture

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Summary This study was conducted to compare and estimate the genetic variability among durum wheat lines in response to drought according to their grain yields and physiological traits. The use of fluorescence parameters as drought selection criteria for durum wheat was investigated in a population of 249 recombinant inbred lines (RILs) derived from a cross between two cultivars of durum wheat: ‘Svevo’ and ‘Kofa’. The durum wheat RILs considered were analyzed to determine the relationship between their grain yields and chlorophyll fluorescence parameters at the grain filling stage under drought stress (rainfed) and supplemental irrigation (irrigated) conditions during the 2004 and 2005 seasons at the ICARDA center. The results obtained show that the durum wheat line performance was influenced by drought stress, indicating significant differences between the grain yields and fluorescence parameters recorded under drought rainfed (RF) and irrigation (IR) conditions. Significant differences between the experimental groups of durum wheat RILs (P<0.05) were only recorded under drought conditions, with the exception of leaf water potential (Lwp). Under such conditions, nearly all the parameters examined were significantly increased in the high-yielding group (with the exception of the Que parameter), thus revealing the genetic variability of the durum wheat lines considered in response to drought stress. The potential quantum efficiency of photosystem II (Fv/Fm) was found to be positively associated with the grain yield parameter. The mean values of Fv/Fm in both the high- and low-yielding groups significantly dropped under drought stress (0.71 and 0.68, respectively) compared to the Fv/Fm values recorded under irrigated conditions (0.80 and 0.81). Under drought conditions, slopes were highly significant (P<0.001) nearly for all the fluorescence parameters examined (with the exception of CHLSPAD) compared to those recorded under irrigation conditions. It was concluded that chlorophyll content (SPAD), F0, Fm, Fv, Fv/Fm, Lwp, and Que could be used as additional indicators in screening wheat germplasm for drought tolerance.

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“…In two years of research by Đurić et al (2017) on the influence of agrometeorological conditions, it was found that in the vegetative season with more precipitation than 176 mm, and average temperatures lower by 3.1 °C, the TGW had higher values. Mohammadi et al (2019) concluded that the characteristics of genotypes of wheat have a great influence than years as a factor. According to their research, the results show that efficiency of photosystem II and thousand-kernel weight were positively associated with grain yield, while heading date, plant height and canopy temperature were negatively associated with grain yield under drought conditions.…”

Section: Discussionmentioning

confidence: 99%

Influence of different methods of application of effective microorganisms in nutrition of wheat on weight by 1000 grains, yield, and content of crude wheat proteins (TRITICUM SP)

Cvijanović¹,

Cvijanović

Rajičić

et al. 2022

CEREAL RESEARCH COMMUNICATIONS

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The research was carried out in three vegetative seasons 2015/16, 2016/17, and 2018/19, on an experimental plot in Padinska Skela, Belgrade, Serbia. The supplement included four NPK treatments (kg ha−1) and foliar treatment with effective microorganisms (EM 7 l ha−1) T1-129: 60: 60; T2-129: 60: 60 + 1 EM; T3-106: 60: 60 + 2 EM ; T4-83: 60: 60 + 3 EM. Four wheat genotypes were sown (Ratarica, Pobeda, Nogal, and Apache). Thousand grain weight and grain yield were determined. The thousand grain weight (TGW) was in the variety Pobeda 43.73 g, and the highest grain yield was in the variety Ratarica 7.02 tha−1. Both varieties are medium late, bread varieties. The treatments have different effects on the studied variables. The TGW was the highest in the T2 treatment of 40.81 g and the grain yield in T3 of 6.62 t ha−1, which was at the level of statistical significance of p > 0.01. The crude protein content was highest in the treatment of T2 13.93% (p > 0.01).

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Agro-Physiological Characterization of Durum Wheat Genotypes Under Drought Conditions

Cited by 27 publications

References 33 publications

Phenotypic Parent Selection Within a Khorasan Wheat Collection and Genetic Variation in Advanced Breeding Lines Derived by Hybridization With Durum Wheat

Phenotypic Parent Selection Within a Khorasan Wheat Collection and Genetic Variation in Advanced Breeding Lines Derived by Hybridization With Durum Wheat

Chlorophyll Fluorescence and Drought Tolerance in a Mapping Population of Durum Wheat

Influence of different methods of application of effective microorganisms in nutrition of wheat on weight by 1000 grains, yield, and content of crude wheat proteins (TRITICUM SP)

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