Nitrogen management for grain yield and protein in the Northern Great Plains

Jones, Clain; Olson-Rutz, Kathrin

doi:10.2134/cs2015-48-5-2

Cited by 10 publications

(18 citation statements)

References 4 publications

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“…Growing wheat with high grain protein begins with selecting of appropriate genotypes followed by management practices [ 32 ]. Therefore, the information about genetic diversity for this trait is important.…”

Section: Discussionmentioning

confidence: 99%

Nutritional Genomic Approach for Improving Grain Protein Content in Wheat

Kartseva

Alqudah

Александров

et al. 2023

Foods

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Grain protein content (GPC) is a key aspect of grain quality, a major determinant of the flour functional properties and grain nutritional value of bread wheat. Exploiting diverse germplasms to identify genes for improving crop performance and grain nutritional quality is needed to enhance food security. Here, we evaluated GPC in a panel of 255 Triticum aestivum L. accessions from 27 countries. GPC determined in seeds from three consecutive crop seasons varied from 8.6 to 16.4% (11.3% on average). Significant natural phenotypic variation in GPC among genotypes and seasons was detected. The population was evaluated for the presence of the trait-linked single nucleotide polymorphism (SNP) markers via a genome-wide association study (GWAS). GWAS analysis conducted with calculated best linear unbiased estimates (BLUEs) of phenotypic data and 90 K SNP array using the fixed and random model circulating probability unification (FarmCPU) model identified seven significant genomic regions harboring GPC-associated markers on chromosomes 1D, 3A, 3B, 3D, 4B and 5A, of which those on 3A and 3B shared associated SNPs with at least one crop season. The verified SNP–GPC associations provide new promising genomic signals on 3A (SNPs: Excalibur_c13709_2568 and wsnp_Ku_c7811_13387117) and 3B (SNP: BS00062734_51) underlying protein improvement in wheat. Based on the linkage disequilibrium for significant SNPs, the most relevant candidate genes within a 4 Mbp-window included genes encoding a subtilisin-like serine protease; amino acid transporters; transcription factors; proteins with post-translational regulatory functions; metabolic proteins involved in the starch, cellulose and fatty acid biosynthesis; protective and structural proteins, and proteins associated with metal ions transport or homeostasis. The availability of molecular markers within or adjacent to the sequences of the detected candidate genes might assist a breeding strategy based on functional markers to improve genetic gains for GPC and nutritional quality in wheat.

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Section: Discussionmentioning

confidence: 99%

Nutritional Genomic Approach for Improving Grain Protein Content in Wheat

Kartseva

Alqudah

Александров

et al. 2023

Foods

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“…Similarly, in a study conducted in South Australia, Grace [ 49 ] found that natural mycorrhization of barley was between 9 and 47% in different field sites. Compared to the vesicles, the high percentage of arbuscules observed in the roots of barley at the “Heading” stage could be explained by the high nutrient demand of the plants for grain filling [ 50 ]. Vesicles serve as storing organs for lipids and other energy reserves [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

Higher temperatures and lower annual rainfall do not restrict, directly or indirectly, the mycorrhizal colonization of barley (Hordeum vulgare L.) under rainfed conditions

et al. 2020

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Whereas the role of arbuscular mycorrhizal fungi (AMF) in plant growth improvement has been well described in agroecosystems, little is known about the effect of environmental factors on AMF root colonization status of barley, the fourth most important cereal crop all over the world. In order to understand the influence of environmental factors, such as climatic and soil physico-chemical properties, on the spontaneous mycorrhizal ability of barley (Hordeum vulgare L.), a field investigation was conducted in 31 different sites in sub-humid, upper and middle semi-arid areas of Northern Tunisia. Mycorrhizal root colonization of H. vulgare varied considerably among sites. Principal component analysis showed that barley mycorrhization is influenced by both climatic and edaphic factors. A partial least square structural equation modelling (PLS-SEM) revealed that 39% (R²) of the total variation in AMF mycorrhizal rate of barley roots was mainly explained by chemical soil properties and climatic characteristics. Whereas barley root mycorrhizal rates were inversely correlated with soil organic nitrogen (ON), available phosphorus amounts (P), altitude (Z), average annual rainfall (AAR), they were directly correlated with soil pH and temperature. Our results indicated that AMF root colonization of barley was strongly related to climatic characteristics than chemical soil properties. The current study highlights the importance of the PLS-SEM to understand the interactions between climate, soil properties and AMF symbiosis of barley in field conditions.

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“…Based on technical recommendations (Cohan and Bouthier, 2010), and data from several studies (e.g. Limaux et al, 1999;Jones et al, 2013;Kissel et al, 2004), we defined that conditions were optimal for fertilizer application (i) each day followed by a cumulative rainfall exceeding 10 mm within three days, or (ii) each day with a positive difference between cumulative rainfall and potential evapotranspiration over the last five past days. Moreover, as Recous and Machet (1999) showed that most of the N-fertilizer applied is taken up by the crop within seven to fourteen days after application, we fixed the minimum interval between two consecutive N applications at 15 days.…”

Section: Simulation Of Various Sequences Of N-fertilizer Application ...mentioning

confidence: 99%

“…Nevertheless, applying N fertilizer during a rainfall event strongly limits N losses by volatilization (Meyer et al, 1961;Powlson et al, 1992;Campbell et al, 1995;Jones et al, 2013), the process responsible for the largest amount of N losses (Limaux et al, 1999).…”

Section: Putting Into Practice the New Way Of Managing N-fertilizationmentioning

confidence: 99%