Durum wheat ideotypes in Mediterranean environments differing in water and temperature conditions

Rezzouk, Fatima Zahra; Gracia‐Romero, Adrian; Kefauver, Shawn C.; Nieto‐Taladriz, M. T.; Serret, María Dolores; Araus, José Luís

doi:10.1016/j.agwat.2021.107257

Cited by 27 publications

(22 citation statements)

References 73 publications

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“…This is because the relationship between δ 13 C and GY is subject to the water conditions experienced by the crop. Under optimal water and moderate stress conditions, correlations between the δ 13 C of mature grains and GY are generally negative in wheat and other C 3 cereals (Araus et al, 1998(Araus et al, , 2003Fischer et al, 1998;Voltas et al, 1999;Monneveux et al, 2005;Lopes and Reynolds, 2010;Rezzouk et al 2020Rezzouk et al , 2022. In contrast, under severe water stress conditions, a positive relationship between the δ 13 C of mature grains and GY has been observed (Voltas et al, 1999;Condon et al, 2002), with genotypes having the most conservative strategy (associated with a high WUE and δ 13 C) being the most productive (Voltas et al, 1999;Condon et al, 2004).…”

Section: Htpp Is Not All About Remote Sensingmentioning

confidence: 99%

“…Analysis of the stable isotope composition of oxygen and hydrogen (δ 18 O and δ 2 H) in the water of the plant stem base has been proposed as an approach to trace the provenance (e.g., irrigation versus precipitation) of the water captured by the plant or the soil depth from which the roots have extracted the water (Yepez et al, 2003; Williams et al, 2004; Kale Çelik et al, 2018; Sanchez‐Bragado et al, 2019; Liu et al, 2020; Rezzouk et al, 2022). The rationale of the approach is based on two considerations.…”

Section: Htpp Is Not All About Remote Sensingmentioning

confidence: 99%

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Crop phenotyping in a context of global change: What to measure and how to do it

Araus

Kefauver

Vergara-Díaz

et al. 2022

JIPB

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High-throughput crop phenotyping, particularly under field conditions, is nowadays perceived as a key factor limiting crop genetic advance. Phenotyping not only facilitates conventional breeding, but it is necessary to fully exploit the capabilities of molecular breeding, and it can be exploited to predict breeding targets for the years ahead at the regional level through more advanced simulation models and decision support systems. In terms of phenotyping, it is necessary to determined which selection traits are relevant in each situation, and which phenotyping tools/ methods are available to assess such traits. Remote sensing methodologies are currently the most popular approaches, even when lab-based analyses are still relevant in many circumstances. On top of that, data processing and automation, together with machine learning/deep learning are contributing to the wide range of applications for phenotyping. This review addresses spectral and red-green-blue sensing as the most popular remote sensing approaches, alongside stable isotope composition as an example of a lab-based tool, and root phenotyping, which represents one of the frontiers for field phenotyping. Further, we consider the two most promising forms of aerial platforms (unmanned aerial vehicle and satellites) and some of the emerging data-processing techniques. The review includes three Boxes that examine specific case studies.

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Section: Htpp Is Not All About Remote Sensingmentioning

confidence: 99%

Section: Htpp Is Not All About Remote Sensingmentioning

confidence: 99%

Crop phenotyping in a context of global change: What to measure and how to do it

Araus

Kefauver

Vergara-Díaz

et al. 2022

JIPB

Self Cite

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“…In woody species, xylem water is available through sap flow (Zhao et al ., 2016) or bark‐removed xylem extraction by cryogenic vacuum distillation (CVD; Ellsworth & Williams, 2007; Poca et al ., 2019; Zhao & Wang, 2021). However, in gramineous plants, xylem water cannot be obtained from green stems; therefore, stem water is typically used instead of xylem water for source‐water tracing studies (Amani et al ., 2018; Wu et al ., 2018; Yang et al ., 2018; Sanchez‐Bragado et al ., 2019; Rezzouk et al ., 2022). The efficacy of this approach is based on the assumption that the stem water is isotopically identical to the source water taken up by roots.…”

Section: Introductionmentioning

confidence: 99%

Comparative cryogenic extraction rehydration experiments reveal isotope fractionation during root water uptake in Gramineae

Jiang

Chen

et al. 2022

New Phytologist

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Determining whether isotope fractionation occurs during root water uptake is a prerequisite for using stem or xylem water isotopes to trace water sources. However, it is unclear whether isotope fractionation occurs during root water uptake in gramineous crops.We conducted prevalidation experiments to estimate the isotope measurement bias associated with cryogenic vacuum distillation (CVD). Next, we assessed isotope fractionation during root water uptake in two common agronomic crops, wheat (Triticum aestivum L.) and maize (Zea mays L.), under flooding after postdrought stress conditions.Cryogenic vacuum distillation caused significant depletion of 2 H but negligible effects on 18 O for both soil and stem water. Surprisingly CVD caused depletion of 2 H and enrichment of 18 O in root water. Stem and root water d 18 O were more than soil water d 18 O, even considering the uncertainty of CVD. Soil water 18 O was depleted compared with irrigation water 18 O in the pots with plants but enriched relative to irrigation water 18 O in the pots without plants.These results indicate that isotope fractionation occurred during wheat and maize root water uptake after full irrigation and led to a heavy isotope enrichment in stem water. Therefore, the xylem/stem water isotope approach widely used to trace water sources should be carefully evaluated.

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“…The influence of the environment on morpho-physiological traits is relatively low and predictable, resulting in higher genetic progress compared to yield-based selection ( Fischer et al., 2012 ). Thus, indirect selection of traits related to drought tolerance and high resource use efficiency during the breeding process is an analytic approach that involves understanding interrelationships among various attributes and responses to environmental variation ( Li et al., 2018 ; Pouri et al., 2019 ; Rezzouk et al., 2022 ). Meta-analysis has indicated that the breeding process of high-yield dryland winter wheat has been continuously enhancing drought tolerance (high leaf water potential and osmotic adjustment, with a small root system) while weakening drought avoidance (large root biomass, small leaf area, and reduced stomatal conductance under water deficits) of plants ( Li et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Balanced below- and above-ground growth improved yield and water productivity by cultivar renewal for winter wheat

Liu

et al. 2022

Front. Plant Sci.

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Breeding cultivars that can maintain high production and water productivity (WP) under various growing conditions would be important for mitigating freshwater shortage problems. Experiments were carried out to assess the changes in yield and WP of different cultivars by breeding and traits related to the changes using tubes with 1.05 m depth and 19.2 cm inner diameter buried in the field located in the North China Plain. Six winter wheat cultivars released from the 1970s to 2010s were assessed under three water levels for three seasons. The results indicated that yield was on average improved by 19.9% and WP by 21.5% under the three water levels for the three seasons for the cultivar released in the 2010s as compared with that released in the 1970s. The performance of the six cultivars was relatively stable across the experimental duration. The improvement in yield was mainly attributed to the maintenance of higher photosynthetic capacity during the reproductive growth stage and greater above-ground biomass accumulation. These improvements were larger under wet conditions than that under dry conditions, indicating that the yield potential was increased by cultivar renewal. Traits related to yield and WP improvements included the increased harvest index and reduced root: shoot ratio. New cultivars reduced the redundancy in root proliferation in the topsoil layer, which did not compromise the efficient utilization of soil moisture but reduced the metabolic input in root growth. Balanced above- and below-ground growth resulted in a significant improvement in root efficiency at grain yield level up to 40% from the cultivars released in the 1970s to those recently released. The results from this study indicated that the improved efficiency in both the above- and below-parts played important roles in enhancing crop production and resource use efficiency.

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Durum wheat ideotypes in Mediterranean environments differing in water and temperature conditions

Cited by 27 publications

References 73 publications

Crop phenotyping in a context of global change: What to measure and how to do it

Crop phenotyping in a context of global change: What to measure and how to do it

Comparative cryogenic extraction rehydration experiments reveal isotope fractionation during root water uptake in Gramineae

Balanced below- and above-ground growth improved yield and water productivity by cultivar renewal for winter wheat

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