scholarly journals Effects of Drought Stress and Nitrogen Fertilizer on Yield, Yield Components and Grain Protein Content of Two Barley Cultivars

2016 ◽  
Vol 6 (20) ◽  
pp. 191-207
Author(s):  
V. Barati ◽  
H. Ghadiri ◽  
◽  
Keyword(s):  
Drought Stress ◽  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Barley Cultivars ◽  
Effects Of Drought

RESPONSE OF AGRONOMIC AND BARLEY QUALITY TRAITS TO NITROGEN FERTILIZER

1979 ◽  
Vol 59 (3) ◽  
pp. 831-837 ◽  
Author(s):  
CHARLES F. McGUIRE ◽  
E. A. HOCKETT ◽  
D. M. WESENBERG
Keyword(s):  
Protein Content ◽  
Heading Date ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Agronomic Performance ◽  
Barley Cultivars ◽  
Percent Protein ◽  
Nitrogen Treatments ◽  
Barley Protein ◽  
Nitrogen Rates

Malting and non-malting barleys fertilized with nitrogen were evaluated for qualitative kernel properties, agronomic performance, cultivar-treatment interactions, and the relationship between malt quality and agronomic performance. Sixty-seven kilograms per hectare of N increased the mean yield of five barley cultivars by 38 and 44% over the checks at Ft. Ellis in 1971 (environment 3) and 1973 (environment 4), respectively; 50 kg/ha of N increased yields over the checks at Aberdeen by 8% in both 1971 (environment 1) and 1973 (environment 2). Doubling the rates at either location did not increase yields further. Nitrogen treatments delayed heading dates at Ft. Ellis in 1971 and height of plants increased at Ft. Ellis but not at Aberdeen. Nitrogen increased barley diastatic power (DP), but decreased barley extracts. Barley protein percent increased significantly with each increment of applied N. A differential response of cultivars to applied N resulted in interactions for barley DP and percent protein. Cultivars × environments interacted for grain yield, heading date, barley DP, barley extract, and grain protein content. Nitrogen rates interacted with environment for plant height, barley extract, and grain protein content. Forty-six of 65 simple correlations between malting and agronomic or kernel traits were significant.

Effect of rates and timing of nitrogen fertilizer on the grain protein content of wheat (Triticum aestivum), grown in two contrasting seasons in South East England

1992 ◽  
Vol 118 (3) ◽  
pp. 265-269 ◽  
Author(s):  
A. A. Sajo ◽  
D. H. Scarisbrick ◽  
A. G. Clewer
Keyword(s):  
Protein Content ◽  
Spring Wheat ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Grain Protein Content ◽  
Early Summer ◽  
Grain Protein ◽  
Summer Drought ◽  
Growing Seasons ◽  
South East England

SUMMARYA field experiment was carried out at the Wye College Farm during 1988 and 1989. The aim was to study the effects of three rates and timings of nitrogen fertilizer application on the grain protein content of spring wheat cv. Axona. Results demonstrated that timing of fertilizer application was more important than the rate of nitrogen used. Grain protein development and final grain protein contents are discussed in relation to the seasonal variations experienced during the 1988 and 1989 growing seasons in South East England. Due to the early February sowing in 1989, grain protein content was not affected by the summer drought. Thus, the advantage of early sowing of spring wheat to reduce the detrimental effect of early summer drought on the grain protein content is emphasised.

Effects of nitrogen fertilizer on the yield and protein content of wheat grown under different cropping rotations

1970 ◽  
Vol 10 (45) ◽  
pp. 450 ◽  
Author(s):  
VF McClelland
Keyword(s):  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Grain Protein Content ◽  
Yield Response ◽  
Grain Protein ◽  
Wheat Cultivars ◽  
Marked Variability ◽  
Wheat Pasture ◽  
Cropping Rotation ◽  
Applied Nitrogen

The effect of nitrogen fertilizer on the yield and grain protein content of several cultivars of wheat grown under wheat-fallow and wheat-pasture-pasture-fallow rotations was studied in the Victorian Mallee during 1962 to 1965. Nitrogen fertilizer increased whest yield on the wheat-fallow rotation, but had little effect on the wheat-pasture-pasture-fallow rotation. Changes in grain protein content due to nitrogen fertilizer were small compared with changes due to the type of cropping rotation. Climate had relatively little influence on grain protein content despite marked variability in rainfall. The significance of this result is discussed in relation to a correlation established between grain protein content of unfertilized plots and yield response to applied nitrogen. The performance of the wheat cultivars Insignia, Olympic, and Beacon with and without applied nitrogen was similar under both rotations.

scholarly journals Effect of Water Stress, Nitrogen and Organic Manure Fertilizer on Nitrogen Use Efficiency Indices and Grain Protein Content of Wheat in a Semi-arid Environment

2020 ◽  
pp. 34-38
Author(s):  
Badr ELdin Abdelgadir Mohamad Ahmed ◽  
Faisal Elgasim Ahmed ◽  
Hanadi Ibrahim Dessougi
Keyword(s):  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Triticum Aestivum L ◽  
Arid Environment ◽  
Grain Protein Content ◽  
Organic Manure ◽  
Chicken Manure ◽  
Grain Protein ◽  
Nitrogen Use ◽  
N Level

A field experiment was conducted for two consecutive seasons during 2010/2011 and 2011/2012 on the Demonstration Farm of the Faulty of Agriculture, University of Kassala at New Half. Nitrogen use efficiencies (i.e. agronomic AE, internal IE, physiological PE and recovery RE) and grain protein content were investigated at different level of watering regimes and organic manure application of wheat (Triticum aestivum L). The watering regime treatments were irrigation every 7, 14 and 21 days, and the nitrogen fertilizer levels were zero, 43, 86 kg N ha-1 without or with 4 tons of chicken manure ha-1. Frequent irrigation, addition of high N level and organic manure significantly increased AE, IE, PE, RE and grain protein content compared to their respective treatments. Mixing of organic manure and nitrogen fertilizer increased AE, IE and RE but resulted in a slightly increase in PE than both treatments when they were added solely. Further, the magnitude of organic manure on AE, IE, RE and grain protein content was significantly greater under normal watering regime. Wheat plants under optimum conditions (frequent watering, high N level plus organic manure) used N, as indicated by AE, PE, IE and RE, more efficiently than under other treatment combination.

scholarly journals Statistical Modeling of Phenotypic Plasticity under Abiotic Stress in Triticum durum L. and Triticum aestivum L. Genotypes

Agronomy ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 139 ◽  
Author(s):  
Abdullah Jaradat
Keyword(s):  
Abiotic Stress ◽  
Phenotypic Plasticity ◽  
Population Density ◽  
Grain Yield ◽  
Protein Content ◽  
Bread Wheat ◽  
Abiotic Stresses ◽  
Yield Components ◽  
Grain Protein Content ◽  
Grain Protein

Future challenges to the role of durum and bread wheat in global food security will be shaped by their potential to produce larger yields and better nutritional quality, while increasingly adapting to multiple biotic and abiotic stresses in the view of global climate change. There is a dearth of information on comparative assessment of phenotypic plasticity in both wheat species under long-term multiple abiotic stresses. Phenotypic plasticities of two durum and bread wheat genotypes were assessed under increasing abiotic and edaphic stresses for six years. Combinations of normal and reduced length of growing season and population density, with or without rotation, generated increasing levels of competition for resources and impacted phenotypic plasticity of several plant and yield attributes, including protein and micronutrients contents. All the phenotypic plasticity (PPs) estimates, except for the C:N ratio in both genotypes and grain protein content in T. aestivum genotype, were impacted by abiotic stresses during the second stress phase (PS II) compared with the first (PS I); whereas, covariate effects were limited to a few PPs (e.g., biomass, population density, fertile tillers, grain yield, and grain protein content). Discrimination between factor levels decreased from abiotic phases > growth stages > stress treatments and provided selection criteria of trait combinations that can be positively resilient under abiotic stress (e.g., spike harvest and fertility indices combined with biomass and grain yield in both genotypes). Validation and confirmatory factor models and multiway cluster analyses revealed major differences in phenotypic plasticities between wheat genotypes that can be attributed to differences in ploidy level, length of domestication history, or constitutive differences in resources allocation. Discriminant analyses helped to identify genotypic differences or similarities in the level of trait decoupling in relation to the strength of their correlation and heritability estimates. This information is useful in targeted improvement of traits directly contributing to micronutrient densities, yield components, and yield. New wheat ideotype(s) can be designed for larger grain yield potential under abiotic stress by manipulating yield components that affect kernels m−2 (e.g., number of tillers, number of florets per spikelet, and eventually spike fertility and harvest indices) without impacting nutrient densities and kernel weight, thus raising harvest index beyond its current maximum.

scholarly journals Genetic diversity analysis of Zinc, Iron, Grain Protein content and yield components in Rice

2016 ◽  
Vol 7 (2) ◽  
pp. 371 ◽  
Author(s):  
R. Nirosha ◽  
S. Thippeswamy ◽  
V. Ravindrababu ◽  
V. Ram Reddy ◽  
B. Spandana
Keyword(s):  
Genetic Diversity ◽  
Protein Content ◽  
Yield Components ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Diversity Analysis ◽  
Genetic Diversity Analysis
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