Fate and effects on yield components of extra applications of nitrogen on spring wheat (Triticum aestivum L.) grown in solution culture

1995 ◽  
Vol 175 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Petter Oscarson ◽  
Tomas Lundborg ◽  
Marie Larsson ◽  
Carl-Magnus Larsson
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
Solution Culture

THE EFFECT OF A GENE FOR SEMIDWARFISM (Rht1) ON VARIOUS CHARACTERS IN A SPRING WHEAT CROSS

1986 ◽  
Vol 66 (3) ◽  
pp. 529-533 ◽  
Author(s):  
J. E. BRANDLE ◽  
D. R. KNOTT
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
The Other ◽  
Lower Weight ◽  
Rainfed Conditions ◽  
Percent Increase ◽  
Positive Correlations ◽  
Wheat Cross

Sixty-four F2-derived F4 lines were produced from a cross between the semidwarf wheat (Triticum aestivum L.) cultivar CSP-44 (Condor sib, Rht1) and the tall cultivar Glenlea (rht1). Thirty-two homozygous tall lines and thirty-two homozygous short lines were tested at Saskatoon under rainfed conditions in 1982 and both rainfed and irrigated conditions in 1983. The objective was to determine the effects of the gene for demidwarfism on yield and other characters under Saskatchewan conditions. The semidwarf lines consistently had more spikes per metre of row and more kernels per spike, but a lower weight per kernel. The percent increase in the number of kernels per spike for the semidwarfs compared to the tails varied more in different environments than the change in the other two components of yield. As a result, the semidwarf lines outyielded the tall lines by 13.1% in the 1982 rainfed test and by 4.1% in the 1983 irrigated test but yielded 2.7% less in the 1983 rainfed test. In general, yield showed only low positive correlations with the yield components, while the yield components showed relatively low negative correlations among themselves.Key words: Wheat, Triticum aestivum, height, semidwarfs, yield components

YIELD OF PURE AND MIXED STANDS OF TWO SPRING WHEAT CULTIVARS SOWN AT FIVE RATES OF SEEDING

1977 ◽  
Vol 57 (3) ◽  
pp. 1005-1007 ◽  
Author(s):  
R. J. BAKER
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
Pure Stand ◽  
Wheat Cultivars ◽  
Seeding Rate ◽  
Mixed Stands ◽  
Yield And Yield Components

Yield and yield components were measured on two spring wheat (Triticum aestivum L. em Thell) cultivars, Neepawa and Pitic 62, and a 1:1 mixture of the two sown at five rates of seeding in each of 2 yr. Lack of agreement between performance in pure and mixed stands was observed when, at the highest seeding rate, the mixture yielded higher in 1974 and lower in 1976 than either of the component cultivars grown in pure stand.

scholarly journals GWAS for plant growth stages and yield components in spring wheat (Triticum aestivum L.) harvested in three regions of Kazakhstan

2017 ◽  
Vol 17 (S1) ◽  
Author(s):  
Yerlan Turuspekov ◽  
Aida Baibulatova ◽  
Kanat Yermekbayev ◽  
Laura Tokhetova ◽  
Vladimir Chudinov ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Plant Growth ◽  
Spring Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
Growth Stages ◽  
Plant Growth Stages

Response of eight Canadian spring wheat (Triticum aestivum L.) cultivars to copper: Pollen viability, grain yield plant−1 and yield components

1994 ◽  
Vol 74 (1) ◽  
pp. 25-30 ◽  
Author(s):  
J. O. Owuoche ◽  
K. G. Briggs ◽  
G. J. Taylor ◽  
D. C. Penney
Keyword(s):  
Triticum Aestivum ◽  
Experimental Design ◽  
Grain Yield ◽  
Spring Wheat ◽  
Copper Sulphate ◽  
Yield Components ◽  
Pollen Viability ◽  
Triticum Aestivum L ◽  
Yield And Yield Components ◽  
Use Efficiency

Eight Canadian spring wheat (Triticum aestivum L.) cultivars, Katepwa, Roblin, Park, Laura, Conway, Oslo, Columbus and Biggar, were tested in the field for copper (Cu) use efficiency. The experiment was conducted at Stony Plain, Alberta on an Orthic, Dark Grey, Chernozemic, Cu deficient (0.48 μg g−1) soil. A split-plot experimental design was used with (+Cu) and without (−Cu) copper treatment of 12.2 kg copper sulphate ha−1. Significant (P ≤ 0.05) effects due to cultivar, Cu, season, and cultivar × Cu interaction were observed, indicating differential response of the test cultivars to Cu for yield and yield components. Cu application significantly (P ≤ 0.05) improved the number of grains spike−1, and floret fertility of Roblin, Laura, Park and Oslo, and increased the grain yield of Conway by 10%. Significant (P ≤ 0.05) effects due to cultivar, year and year × cultivar interaction for Cu efficiency indicated that Cu use efficiency varied with both year and cultivar. Biggar showed the highest Cu use efficiency (108%) while Oslo showed the lowest (57%). Key words:Triticum aestivum L., cultivars, copper, pollen viability, copper use efficiency

scholarly journals Seeding Rate Effects on Hybrid Spring Wheat Yield, Yield Components and Quality

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1240
Author(s):  
Peder K. Schmitz ◽  
Joel K. Ransom
Keyword(s):  
Spring Wheat ◽  
Yield Components ◽  
Wheat Yield ◽  
Triticum Aestivum L ◽  
Yield Component ◽  
Economic Feasibility ◽  
Protein Yield ◽  
Seeding Rate ◽  
Hard Red Spring Wheat ◽  
End Use

Agronomic practices, such as planting date, seeding rate, and genotype, commonly influence hard red spring wheat (HRSW, Triticum aestivum L. emend. Thell.) production. Determining the agronomic optimum seeding rate (AOSR) of newly developed hybrids is needed as they respond to seeding rates differently from inbred cultivars. The objectives of this research were to determine the AOSR of new HRSW hybrids, how seeding rate alters their various yield components, and whether hybrids offer increased end-use quality, compared to conventional cultivars. The performance of two cultivars (inbreds) and five hybrids was evaluated in nine North Dakota environments at five seeding rates in 2019−2020. Responses to seeding rate for yield and protein yield differed among the genotypes. The AOSR ranged from 3.60 to 5.19 million seeds ha−1 and 2.22 to 3.89 million seeds ha−1 for yield and protein yield, respectively. The average AOSR for yield for the hybrids was similar to that of conventional cultivars. However, the maximum protein yield of the hybrids was achieved at 0.50 million seeds ha−1 less than that of the cultivars tested. The yield component that explained the greatest proportion of differences in yield as seeding rates varied was kernels spike−1 (r = 0.17 to 0.43). The end-use quality of the hybrids tested was not superior to that of the conventional cultivars, indicating that yield will likely be the determinant of the economic feasibility of any future released hybrids.

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