scholarly journals Genetic variation of several bread wheat (Triticum aestivum L.) genotypes based on some morphological traits

2014 ◽  
Vol 69 (1) ◽  
pp. 44-54
Author(s):  
NASER SABAGHNIA ◽  
MOHSEN JANMOHAMMADI ◽  
ADEL BASHIRI ◽  
REZA ASGHARI-SHIRGHAN
Keyword(s):  
Cluster Analysis ◽  
Triticum Aestivum ◽  
Grain Yield ◽  
Bread Wheat ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Triticum Aestivum L ◽  
Grain Number ◽  
The Mean ◽  
Thousand Seed Weight

The genetic diversity among 56 bread wheat (Triticum aestivum L.) genotypes was evaluated by 18 agronomical traits in the experimental field at Maragheh, Iran. Significant differences among bread wheat genotypes in all of the measured traits i.e. stem diameter, plant height, leaf number, leaf length, leaf width, tiller number, internode length, peduncle length, spike length, floret number, spikelet number, grain number, length of awn, grain diameter, grain length, the number of days to flowering, thousand seed weight and grain yield. The coefficient of variation (CV) was high for grain yield (25.61%), number of tillers per plant (22.06%) and number of grains per spike (21.45). The other remaining traits recorded moderate to low CV estimates from 14.30% in grain number per spike to 4.81% in days to flowering. The largest thousand seed weight was 45.93 g, the lowest thousand seed weight was 26.16 g and the mean thousand seed weight was 37.85 g. The mean performance of grain yield was 5031.2 kg ha-1, the minimum grain yield was 2835.0 kg ha-1 and the maximum grain yield was 7125.3 kg ha-1. Ward’s minimum variance cluster analysis based on squared Euclidian distance on the raw data of 18 agronomic traits clearly separated five clusters. In general, cluster analysis of the 56 genotypes based on the selected agronomic traits was consistent with known information. Our plant materials could be important germplasm resources for enriching the genetic background of commercial cultivars. Such genetic differences of bread wheat traits studied in this investigation can be applied as a new source of variation in other breeding programs and crossing nurseries in breeding program

scholarly journals Evaluation of Salinity Tolerant Wheat (Triticum aestivum L.) Genotypes through Multivariate Analysis of Agronomic Traits

2021 ◽  
Author(s):  
Tahmidul Ashik ◽  
Md. Moshiul Islam ◽  
Md. Sohel Rana ◽  
Khurshida Jahan ◽  
Tahmina Akter Urmi ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Arable Land ◽  
Winter Season ◽  
Triticum Aestivum L ◽  
Yield Reduction ◽  
Wide Range ◽  
Thousand Seed Weight

Background: Wheat (Triticum aestivum L.) is the second major global cereals mostly grown in winter season which led wheat plants to suffer with salinity stress. Twenty to thirty percent of the arable land of the world is present in the saline area. Therefore, it is necessary to develop salinity tolerant wheat varieties to meet the future food demand. Methods: A field experiment was carried out during November 2018 to March 2019 to observe the effect of salinity on yield and other desired plant characters and finally screening of wheat genotypes for salinity tolerance. The experiment was laid out in a complete randomized design containing three treatments with three replications. The treatments were three levels of salinity such as control, 8 dS m-1 and 15 dS m-1. Multivariate and principal components analysis was executed to evaluate yield and other plant characters. Result: The results of the experiment revealed that different plant characters showed wide range of variation under different salinity levels. Biplot analysis considering PC1 and PC2 revealed that grain yield was positively correlated with grain spike-1, spike length, thousand seed weight and total tiller plant-1. Correlation study also revealed that total tiller plant-1, spikelet spike-1, grain spike-1 and thousand seed weight showed significant and positive relation with grain yield plant-1. On the basis of yield reduction percent and yield the genotypes G12 (2.51 g), G16 (2.49 g) and G4 (2.19 g) were found suitable for 15 dS m-1 salinity.

Alvena hard red spring wheat

2008 ◽  
Vol 88 (3) ◽  
pp. 513-518 ◽  
Author(s):  
R. E. Knox ◽  
R. M. DePauw ◽  
F. R. Clarke ◽  
F. R. Clarke ◽  
T. N. McCaig ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Spring Wheat ◽  
Protein Concentration ◽  
Triticum Aestivum L ◽  
Head Blight ◽  
Hard Red Spring Wheat ◽  
The Mean ◽  
End Use ◽  
Moderate Resistance

Based on 38 replicated trials over 3 yr, Alvena, hard red spring wheat (Triticum aestivum L.) expressed significantly higher mean grain yield than the checks. It was significantly earlier maturing than AC Barrie and significantly more resistant to lodging than Katepwa. Wheat protein concentration of Alvena was similar to the mean of the checks and flour protein concentration was significantly higher than the check mean. Amylograph viscosity was significantly lower than the mean of the checks. Alvena meets the end-use quality and Canadian Grain Commission’s kernel visual distinguishability specifications of the Canada Western Red Spring wheat market class. Alvena expressed moderate resistance to prevalent races of loose smut and stem rust, intermediate resistance to prevalent races of leaf rust and common bunt, and moderate susceptibility to fusarium head blight. Key words: Triticum aestivum L., cultivar description, grain yield, maturity, disease resistance

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