Phenotyping‐Modelling Interfaces to Advance Breeding for Optimized Crop Root Systems

Bodner, Gernot; Leitner, Daniel; Rewald, Boris; Zhao, Jiangsan; Nakhforoosh, Alireza; Schnepf, Andrea

doi:10.1002/9781119525417.ch15

Cited by 4 publications

(2 citation statements)

References 248 publications

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“…The rhizoboxes (30 × 100 × 1 cm) were filled with sieved (3 mm) silt loam topsoil (sand 21.9%, silt 61.2%, and clay 16.9%), which is representative of the eastern Austrian soils where sugar beet is grown (chernozem), and mounted into a metal holder at an angle of 45 • to maximize root visibility from the glass observation window. The effect of different substrates (texture and hydraulic properties) on the root morphology in rhizobox experiments was pretested, demonstrating vigorous root growth when using field soil where the water retention characteristics are similar to field conditions (θ field capacity = 0.36 cm 3 cm −3 , θ wilting point = 0.12 cm 3 cm −3 ; [30]).…”

Section: Methodsmentioning

confidence: 99%

Sugar Beet Rooting Pattern Mediates Stomatal and Transpiration Responses to Progressive Water Stress

Bodner,

Alsalem

2023

Agronomy

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Water stress is the main risk facing sugar beet production in Europe and is expected to worsen with climate change. Therefore, future production essentially depends on the traits that sustain growth during water shortages. In this study, we investigated the interplay of stomatal conductance and transpiration rate as well as the root characteristics of six sugar beet cultivars in a climate chamber experiment under environmental conditions progressing from a non-stressed initial state toward high atmospheric water demand, followed by reduced soil water supply and then by a combination of high demand and low supply. Stomatal conductance quickly responded to changing conditions, dropping from 406.4 to 42.5 mmol m−2 s−1, one order of magnitude, with the transition to reduced soil water availability. The transpiration rate showed a slightly delayed response compared with stomatal conductance, while we observed an inverse influence on the subsequent stomatal behavior exerted by the depletion/conservation of available soil water. The rooting pattern substantially differed among genotypes, predominantly at depths between 60 and 80 cm, where 50.5% of the root length was allocated. Longer roots buffered the effects of the reduction in stomatal conductance at the onset of water supply limitation, with 5.4 mmol m−2 s−1 higher conductance per 100 cm of root length. Therefore, breeding and/or management measures targeting root system vigor are the key to the growth maintenance of sugar beet during dry periods.

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Section: Methodsmentioning

confidence: 99%

Sugar Beet Rooting Pattern Mediates Stomatal and Transpiration Responses to Progressive Water Stress

Bodner,

Alsalem

2023

Agronomy

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“…Root traits have not been widely used in selection programmes and in distinctness, uniformity and stability (DUS) tests for variety development and plant breeders' rights protection. Bodner et al (2021) noted that there is a disconnect between experimental research and practical breeding except in a few crops such as wheat, rice and common bean where root traits have been included in practical breeding programmes (Richards, 2008; Lynch, 2011; Rose et al, 2013). In the last 50 years, plant breeding programmes focused on developing superior varieties adapted for high‐input production systems based on aboveground phenotypic traits (de Carvalho et al, 2013; Marshall et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Genetic analyses of root traits: Implications for environmental adaptation and new variety development: A review

Mathew

Shimelis

2022

Plant Breeding

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The root system is vital for anchorage, mobilizing water and nutrients and symbiosis with soil microbes, which influence adaptation and crop performance. However, root traits are not widely used in crop variety development because root phenotyping is difficult and there is limited understanding of the genetics of root traits. The available genetic variation and emerging root phenotyping and genotyping technologies present opportunities for integrating root traits in breeding. Selection efficiency for root traits can be enhanced by integrating shovelomics, digital imaging, crop modelling and gene sequencing systems. Therefore, the objectives of this review are to discuss critical root traits and their vital functions, genetic variation present for root traits, opportunities and challenges in root phenotyping and integration of genomic tools in breeding for improved root systems. The information presented in the paper will guide crop breeders in developing a new generation of crop varieties with desirable yield and root traits.

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Root morphological and anatomical responses to increasing phosphorus concentration of wheat plants grown under salinity

et al. 2022

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Phenotyping‐Modelling Interfaces to Advance Breeding for Optimized Crop Root Systems

Cited by 4 publications

References 248 publications

Sugar Beet Rooting Pattern Mediates Stomatal and Transpiration Responses to Progressive Water Stress

Sugar Beet Rooting Pattern Mediates Stomatal and Transpiration Responses to Progressive Water Stress

Genetic analyses of root traits: Implications for environmental adaptation and new variety development: A review

Root morphological and anatomical responses to increasing phosphorus concentration of wheat plants grown under salinity

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