Influence of Higher Growing-season Temperatures on Yield Components of Winter Wheat (Triticum aestivum L.)

Crop Science ◽  
2013 ◽  
Vol 53 (2) ◽  
pp. 621-628 ◽  
Author(s):  
Zenta Nishio ◽  
Miwako Ito ◽  
Tadashi Tabiki ◽  
Koichi Nagasawa ◽  
Hiroaki Yamauchi ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Yield Components ◽  
Growing Season ◽  
Triticum Aestivum L

THE EFFECT OF IRRIGATION TIMING ON YIELD AND YIELD COMPONENTS OF WINTER WHEAT

1983 ◽  
Vol 63 (4) ◽  
pp. 815-823 ◽  
Author(s):  
M. L. HOOKER ◽  
S. H. MOHIUDDIN ◽  
E. T. KANEMASU
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Significant Response ◽  
Seeding Rate ◽  
Cropping Season ◽  
Yield And Yield Components ◽  
Irrigation Treatments

A study was conducted in southwest Kansas to evaluate the effect of limited water applications at critical growth stages on yield and yield components of winter wheat (Triticum aestivum L.). The experiment was a split-plot design. Irrigation treatments were main plots and cultivar × seeding rate combinations were subplots. The irrigation treatments were: Preplant (PP), PP + jointing (JT), PP + flowering (FL), and PP + JT + FL. Two cultivars (Centurk and Newton) were seeded at rates of 22, 45, and 67 kg∙ha−1. The experiment was conducted over a 2-yr period. During the first cropping season grain and straw yields showed a significant (P < 0.05), positive response to irrigation water applications at the JT growth stage, compared to the PP and PP + FL treatments. There was no significant effect of water treatments on heads per square metre, kernels per square metre or kernel weight. The second cropping season resulted in a positive, significant response of straw yields to irrigation treatments, but no significant response of grain. Grain yield response was nullified by greater kernel weight on the treatments that were most limiting in soil water during early reproductive development (PP and PP + FL).Key words: Triticum aestivum L., limited irrigation, moisture stress, seeding rate, kernel number, kernel weight

Winter wheat (Triticum aestivum L.) tolerance to mixtures of herbicides and fungicides applied at different timings

2013 ◽  
Vol 93 (3) ◽  
pp. 491-501 ◽  
Author(s):  
Melody A. Robinson ◽  
Michael J. Cowbrough ◽  
Peter H. Sikkema ◽  
François J. Tardif
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Growth Stage ◽  
Growing Season ◽  
Field Studies ◽  
Triticum Aestivum L ◽  
Visible Injury ◽  
Application Field ◽  
Time Of Application ◽  
Fungicide Mixtures

Robinson, M. A., Cowbrough, M. J., Sikkema, P. H. and Tardif, F. J. 2013. Winter wheat (Triticum aestivum L.) tolerance to mixtures of herbicides and fungicides applied at different timings. Can. J. Plant Sci. 93: 491–501. Farmers commonly tank-mix herbicides and fungicides to reduce application costs. In the spring of 2008, there were reports of winter wheat injury with the application of herbicide–fungicide tank-mixes early in the growing season. This study was established to determine the tolerance of winter wheat to herbicide–fungicide mixtures as influenced by time of application. Field studies were conducted at four Ontario locations in 2009 and 2010 with three herbicides and four fungicides. Herbicide–fungicide tank-mixes were applied early, under cold conditions, and late at growth stage Zadoks 37–39. Dichlorprop/2,4-D mixed with tebuconazole caused up to 15% injury when applied early and up to 29% injury when applied late. Bromoxynil/MPCA mixed with tebuconazole injured wheat up to 15% when applied early but only 10% when applied late. Other herbicide and fungicide mixes caused a lower level of injury. Visible injury was transient and did not reduce winter wheat yields. The likelihood of tank-mixes causing injury was greater when they were applied late. The fungicide tebuconazole caused the highest level of injury when mixed with herbicides and injury was particularly high with dichlorprop/2,4-D.

CORRELATION BETWEEN NUMBER OF STOMATA AND CONCENTRATION OF MACRO- AND MICROELEMENTS IN SOME WINTER WHEAT (TRITICUM AESTIVUM L.) GENOTYPES

2001 ◽  
Vol 49 (4) ◽  
pp. 319-327 ◽  
Author(s):  
M. SABO ◽  
BEDE M. ◽  
VUKADINOVIĆ V.
Keyword(s):  
Triticum Aestivum ◽  
Correlation Analysis ◽  
Winter Wheat ◽  
Standard Method ◽  
Growing Season ◽  
Triticum Aestivum L ◽  
Kjeldahl Method ◽  
Aas Method ◽  
Mn Concentrations ◽  
Stomata Number

The number of stomata and the concentration of macro- and microelements in four new winter wheat genotypes: Lenta, Lara, Perla and Fiesta were investigated in two localities in Croatia in the 1997/98 growing season. The stomata number per mm2 was determined by a standard method. N was established by the micro-Kjeldahl method, P spectrophotometrically and K, Ca, Mg, Zn, Cu, Fe and Mn by the AAS method. The interrelation of the investigated parameters was determined by multiple regression and correlation analysis. The results obtained indicate that the number of stomata per mm2 and the macro- and microelement concentrations depended on the genotype, the phenophase and the locality. A statistically significant correlation was found between the stomata number per mm2 and the macro- (N, P, K, Ca, Mg) and microelement (Zn, Cu, Fe, Mn) concentrations.

scholarly journals Determination on Genetic Variation for Morphological Traits and Yield Components of New Winter Wheat (Triticum aestivum L) Lines

2010 ◽  
Vol 2 (1) ◽  
pp. 121-124 ◽  
Author(s):  
Sali Ali ALIU ◽  
Shukri FETAHU
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Yield Components ◽  
Harvest Index ◽  
Dry Matter ◽  
Triticum Aestivum L ◽  
Yield Traits ◽  
Wheat Line ◽  
Lower Yield ◽  
Genetic Studies

he genetic studies were conducted on six new winter wheat (Triticum aestivum L.) line during three years investigations developed in agro ecological conditions of Kosovo. Data for various morphological and yield traits were taken and analyzed for spike length (SL), plant height (PH), total dry matter (TDM), spike Weight (SW), grain weight per spike (GWS), yield (Y) and harvest index (HI). Field design consisted in a randomized blocks design (RBD) with three replications. Results indicated that the line 01KS as the most competitive genotypes produced significantly higher for SL (9.58 cm), GWS (2.37 g per spike) and grain yield (10.66 t ha-1) while lower yield was recorded at the line 04KS (8.02 t ha-1). The lowest SL (8.4 cm) belonged to line 06KS which was ranked as the least competitive genotype. The significantly higher total dry matter (TDM) was recorded at the wheat line 02KS on value 4.88 g, while the lowest (4.44 g) belonged to 04KS which was ranked as the last genotype. There was a positive and significant harvest index (HI) on value from 50.5% to 39.1%.

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