scholarly journals Nitrogen Accumulation and Grain Protein Fraction of a Low-protein Strain in Two-rowed Barley.

1994 ◽  
Vol 63 (2) ◽  
pp. 247-253 ◽  
Author(s):  
Akihiro SASAKI ◽  
Masaru OHTSUKA ◽  
Tsuneo KATO ◽  
Akira KAMINAGA
Keyword(s):  
Protein Fraction ◽  
Grain Protein ◽  
Nitrogen Accumulation ◽  
Low Protein ◽  
Protein Strain

scholarly journals Effects of Foliar Spraying of Urea on Grain Protein Content and Nitrogen Accumulation in Plant Organs in Bread Wheat Cultivar “Setokirara”

2018 ◽  
Vol 87 (4) ◽  
pp. 291-297
Author(s):  
Shunji Inaba ◽  
Tadashi Takahashi ◽  
Eiichiro Kamada ◽  
Motoharu Murata ◽  
Akihiko Ikejiri ◽  
...  
Keyword(s):  
Protein Content ◽  
Bread Wheat ◽  
Wheat Cultivar ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Nitrogen Accumulation ◽  
Plant Organs ◽  
Bread Wheat Cultivar

Nitrogen requirements of irrigated wheat on the Darling Downs

1981 ◽  
Vol 21 (111) ◽  
pp. 424 ◽  
Author(s):  
WM Strong
Keyword(s):  
Grain Yield ◽  
Protein Concentration ◽  
N Fertilizer ◽  
Yield Response ◽  
Grain Protein ◽  
Price Ratio ◽  
Grain Protein Concentration ◽  
Low Protein ◽  
Management Factors ◽  
Irrigated Wheat

Eighteen fertilizer trials, each with five levels of nitrogen (N) and three levels of phosphorus (PI, were conducted on black earth soils of the Darling Downs to establish optimal economic rates of N fertilizer in commercial, irrigated wheat crops. The optimal economic rate of N with a fertilizer: wheat price ratio (kg N: kg grain) of 5:l, the yield response of 100 kg/ha of applied N, the yield without fertilizer, and the yield with fertilizer not limiting were calculated from derived yield response relations at each site. A multi-variate regression procedure was used to determine which soil or crop management factors significantly influenced the rate of N needed to optimize wheat yield. Delay in planting after June 1 and the level of residual mineral N in the soil at planting had strong negative effects on the response to fertilizer and the optimal rate of fertilizer required. The results indicate that yields of irrigated wheat may be below the economic optimum because of sub-optimal applications of N. Other soil and management factors such as available soil P and number of irrigations also affected grain yield. At 1 3 sites low protein wheat (< 1 1.4�1~) was produced with all but the highest two rates of N fertilizer and at two sites even the highest rate produced low protein wheat. The effect of N fertilizer applied at planting on grain protein concentration was changed by the yield response to the fertilizer application. Grain protein concentration was curvilinearly related (R2 = 0.81) to relative grain yield (yield as a proportion of the maximum yield); grain protein was at its minimum at a relative yield of 0.5. Although heavy rates of N fertilizer at planting increased grain protein concentration on a few sites, usually these applications led to an inefficient use of N fertilizer; apparent incorporation of fertilizer N into grain decreased with increasing rate of fertilizer.

scholarly journals PROPERTIES OF THE CAUSATIVE AGENT OF A CHICKEN TUMOR

1932 ◽  
Vol 56 (1) ◽  
pp. 91-106 ◽  
Author(s):  
James B. Murphy ◽  
Ernest Sturm ◽  
Albert Claude ◽  
Oscar M. Helmer
Keyword(s):  
Protein Content ◽  
Aluminum Hydroxide ◽  
Causative Agent ◽  
Protein Fraction ◽  
Low Protein ◽  
Biological Tests

By two methods a protein fraction can be separated out from a Chicken Tumor I extract, which carries all the tumor-producing agent. The precipitate can be dissolved and reprecipitated a number of times without loss of activity. The agent can be largely dissociated from the protein as shown by the fact that aluminum hydroxide will adsorb the protein from an extract and leave the agent behind. This purified material has a very low protein content, if any, as shown by both chemical and biological tests.

Variability in grain protein in Australian hexaploid wheats

1990 ◽  
Vol 41 (2) ◽  
pp. 277 ◽  
Author(s):  
FL Stoddard ◽  
DR Marshall
Keyword(s):  
Protein Content ◽  
Wheat Variety ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Yield Data ◽  
Yield Level ◽  
Low Protein ◽  
Market Requirements ◽  
Breeding Programmes ◽  
Western Australian

Grain protein content and grain yield data were collected from 11 Interstate Wheat Variety Trials (IWVT) and other sources. The level of variation in grain protein content beyond that attributable to covariation in environment and yield was estimated using a generalized linear model. A range of almost 4% in corrected protein content was found among 204 lines tested in IWVT. The Western Australian cv. Tincurrin was approx1% lower in grain protein content than any other line, while Shortim, Sun 43A, QT2200-20, QT2612-1 and Sun 92A were all 1.4-1.7% higher than the pooled mean of 4 control cultivars (Cook, Eagle, Halberd and Oxley). Accessions did not vary significantly in protein content with change in yield. Results from a range of other independent trials confirmed those from IWVT. Wheats genetically capable of producing a higher concentration of protein in their grain at a given yield level came principally from the Sydney University and Queensland breeding programmes, and those producing a lower concentration principally from Victoria and Western Australia. Grain hardness was independent of grain protein content and many low protein hard wheats entering the IWVT fell well outside current international market requirements.

Sustaining productivity of a Vertisol at Warra, Queensland, with fertilisers, no-tillage or legumes. 2. Long-term fertiliser nitrogen needs to enhance wheat yields and grain protein

1996 ◽  
Vol 36 (6) ◽  
pp. 665 ◽  
Author(s):  
WM Strong ◽  
RC Dalal ◽  
EJ Weston ◽  
JE Cooper ◽  
KJ Lehane ◽  
...  
Keyword(s):  
Grain Yield ◽  
Soil Water ◽  
Protein Concentration ◽  
Market Value ◽  
High Protein ◽  
Grain Protein ◽  
N Application ◽  
Grain Yields ◽  
Low Protein ◽  
Cereal Production

Cereal production in the summer-dominant rainfall region of Australia, especially the north-east, has relied heavily on natural soil fertility. Continued cereal production has so depleted the fertility of some soils that corrective strategies are required to restore the production of high protein wheat needed for domestic and export markets. Application of nitrogen (N) fertilisers, along with other strategies to improve soil N status, was evaluated between 1987 and 1994 on a Vertisol located in an area of unreliable winter rainfall. Responses of wheat grain yield and protein content to applied N (0-150 kg/ha) under zero tillage (ZT) and conventional tillage (CT) were determined each year, except 1991 when severe drought prevented wheat sowing. The ZT practices increased grain yields, particularly in 1988 and 1992-93 when antecedent soil water supplies were moderate (about 1 m wet soil in 1988 and 1992) or low (about 0.6 m wet soil in 1993), apparently due to increased antecedent soil water. Tillage practice had little effect on available nitrate-N (kg/ha) to 1.5 m, but the greater water supply in ZT soil usually benefited the wheat crop when N was applied. Applying N increased returns from 5 of the 7 crops because of grain yield and/or grain protein responses. Grain yield responses were inconsistent in the year of fertiliser application where no N fertiliser had been applied to preceding crops. Nevertheless, grain protein usually increased with increasing N application at sowing, except in 1994, when drought after sowing prevented secondary root development and fertiliser uptake. Where N was applied with each successive crop, the crops receiving small N applications (0, 12.5 or 25 kg/ha.crop) produced grain of a low protein concentration (<10%) and lower yields (<90% maximum yield) than crops which received larger N applications (75 kg/ha.crop). Profits were substantially reduced where the rate of N applied was insufficient to raise grain protein concentration to >11.5%, due to the low market value of low protein wheat, or because of lower grain yields. Routine N application to crops over the period 1987-94, which included the longest drought (1990-94) in the lifetime of most producers, caused similarly inconsistent grain yield increases but increased grain protein concentrations (>11.5%) in all except the first crop (1987). Increased frequency of high protein wheat and a high anticipated market value of the higher protein grain should encourage greater producer confidence with routine application of N throughout this region.

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