Comparing Phenotypic Variation of Root Traits in Thai Rice (Oryza Sativa L.) Across Growing Systems

Saengwilai, Patompong

doi:10.15666/aeer/1602_10691083

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…Root architecture encompasses the spatial configurations of a root system that influence plant fitness by regulating access to soil resources (Lynch, 1995). Root anatomy has been related to differences in functional efficiency and stress responses in several crop species (Uga et al, 2008;Peñ a-Valdivia et al, 2010;Saengwilai et al, 2018). Root architecture and anatomy play a central role in plant growth, resource allocation, and acquisition of soil resources (Lynch and Brown, 2012).…”

Section: Introductionmentioning

confidence: 99%

Architectural and anatomical responses of maize roots to agronomic practices in a semi‐arid environment

Zhan

Liu

Yue

et al. 2019

J. Plant Nutr. Soil Sci.

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Root architecture and anatomy are important determinants of nitrogen (N) and water acquisition, but they are also environmentally plastic to adapt to N and water availability. Therefore, understanding the relationship between root traits and environmental factors is essential for improving N and water acquisition. A field experiment was conducted in the semi‐arid region of the Loess Plateau in northwestern China to quantify the architectural and anatomical root traits of maize (Zea mays L.) in response to plastic film mulching and N fertilization. We compared four treatments: non‐mulching with and without N supply as well as plastic film mulching with and without N supply. Variation existed for all root architecture and anatomy traits within maize root crowns. Crown and brace root angles to the soil line decreased in response to film mulching and N fertilization. Crown roots under plastic film mulching showed a significantly decreased distance to branching, reduced lateral root length, and overall increased root diameter. Similarly, N application significantly decreased the distance to branching, yet induced more compact and denser crown roots, and increased the root diameter. Brace roots exhibited an increased distance to branching, greater lateral root length and density, as well as a larger root diameter in response to plastic film mulching and N fertilization. Additionally, the accumulated number of nodal roots increased greatly under plastic film mulching and N treatments. At the anatomical level, N application reduced the proportion of the root cortical aerenchyma area. In contrast, aerenchyma area, cortex cell size, and late metaxylem vessel diameter were increased as a result of plastic film mulching. These results demonstrate root architectural and anatomical traits respond to mulching practices and N fertilization.

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Section: Introductionmentioning

confidence: 99%

Architectural and anatomical responses of maize roots to agronomic practices in a semi‐arid environment

Zhan

Liu

Yue

et al. 2019

J. Plant Nutr. Soil Sci.

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“…Several lines of evidence suggest that increased root growth angle is key for drought adaptation. For example, variation in several root traits of rice, including root growth angle, were linked to rice crops grown in flooded fields and in fields without flooding treatment (Saengwilai et al., ). Similarly, the DEEPER ROOTING 1 ( DRO1 ) gene was shown to increase root growth angle in rice to compensate for drought by increasing rooting depth (Uga et al., ).…”

Section: Discussionmentioning

confidence: 99%

Phenotypic variation of cassava root traits and their responses to drought

Kengkanna

Jakaew

Amawan³

et al. 2019

Appl Plant Sci

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Premise of the Study The key to increased cassava production is balancing the trade‐off between marketable roots and traits that drive nutrient and water uptake. However, only a small number of protocols have been developed for cassava roots. Here, we introduce a set of new variables and methods to phenotype cassava roots and enhance breeding pipelines. Methods Different cassava genotypes were planted in pot and field conditions under well‐watered and drought treatments. We developed cassava shovelomics and used digital imaging of root traits ( DIRT ) to evaluate geometrical root traits in addition to common traits (e.g., length, number). Results Cassava shovelomics and DIRT were successfully implemented to extract root phenotypes, and a large phenotypic variation for root traits was observed. Significant correlations were found among root traits measured manually and by DIRT . Drought significantly decreased shoot dry weight, total root number, and root length by 84%, 30%, and 25%, respectively. High adventitious root number was associated with increased shoot dry weight ( r = 0.44) under drought. Discussion Our methods allow for high‐throughput cassava root phenotyping, which makes a breeding program targeting root traits feasible. We suggest that root number is a breeding target for improved cassava production under drought.

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“…The amount of chlorophyll a and b and carotenoid were determined using a spectrophotometer at the wavelengths of 662, 644, and 470 nm, respectively. Root traits were measured according to Saengwilai et al (2018). Number of adventitious roots, lateral root branching, and root length were measured manually by counting and using a ruler (Saengwilai et al 2018).…”

Section: Measurement Of Growth Parametersmentioning

confidence: 99%

“…Root traits were measured according to Saengwilai et al (2018). Number of adventitious roots, lateral root branching, and root length were measured manually by counting and using a ruler (Saengwilai et al 2018).…”

Section: Measurement Of Growth Parametersmentioning

confidence: 99%

Effects of aqueous Moringa oleifera leaf extract on growth performance and accumulation of cadmium in a Thai jasmine rice—Khao Dawk Mali 105 variety

Auesukaree

Bussarakum

Sirirakphaisarn

et al. 2022

Environ Sci Pollut Res

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The contamination of paddy elds and rice grains by cadmium (Cd) adversely affects human health. Thus, many approaches have been proposed to reduce the accumulation of Cd in rice. Here, we investigate the potential of aqueous Moringa oleifera leaf extract (AMOLE) in decreasing uptake and toxicity of Cd in a popular Thai jasmine rice variety, Khao Dawk Mali 105 (KDML105). Plants were grown in Petri dishes, a hydroponic system, and a pot system under different concentrations of Cd, in the presence and absence of AMOLE. In Petri dishes, Cd reduced the percentage of germination by 79%, but the treatment with 0.5 mg mL -1 AMOLE signi cantly increased the germination percentage. Moreover, AMOLE signi cantly decreased Cd accumulation in rice seedlings by 97%. In the hydroponics system, 0.5 mg mL -1 AMOLE decreased Cd content in shoots by 48%. Although no signi cant physiological changes in response to Cd treatments were observed in the pot system, a large amount of Cd was accumulated in rice roots. The AMOLE treatments signi cantly reduced Cd accumulation in rice shoots and decreased Cd content in milled grain by half compared to those without AMOLE treatment. We conclude that AMOLE reduced Cd toxicity, enhanced seedling growth, and reduced Cd accumulation in rice grains.

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Comparing Phenotypic Variation of Root Traits in Thai Rice (Oryza Sativa L.) Across Growing Systems

Cited by 11 publications

References 29 publications

Architectural and anatomical responses of maize roots to agronomic practices in a semi‐arid environment

Architectural and anatomical responses of maize roots to agronomic practices in a semi‐arid environment

Phenotypic variation of cassava root traits and their responses to drought

Effects of aqueous Moringa oleifera leaf extract on growth performance and accumulation of cadmium in a Thai jasmine rice—Khao Dawk Mali 105 variety

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