scholarly journals Relationships between Grain Yield and Yield Components in Bread Wheat under Different Water Availability (Dryland and Supplemental Irrigation Conditions)

2012 ◽  
Vol 40 (1) ◽  
pp. 195 ◽  
Author(s):  
Mohtasham MOHAMMADI ◽  
Peyman SHARIFI ◽  
Rahmatollah KARIMIZADEH ◽  
Mohammad Kazem SHEFAZADEH
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Bread Wheat ◽  
Yield Components ◽  
Field Experiments ◽  
Kernel Weight ◽  
Spike Length ◽  
Test Weight ◽  
Supplemental Irrigation ◽  
Days To Maturity

Path and correlation analysis were executed to investigate the relationships between grain yield and other important yield components in bread wheat (Triticum aestivum L.) genotypes during two years (2009-2011) under supplemental irrigation and dryland conditions. Field experiments were performed in a randomized complete block design with four replications. Grain yield showed positive correlation with plant height and test weight under supplemental irrigation condition. The similar results were also revealed between grain yield and plant height, spike length, days to maturity, agronomic score and test weight in dryland environment. The grain yield of bread wheat in dryland condition depended on the effect of plant height, days to maturity, agronomic score and 1000 kernel weight, whereas in supplemental irrigation was mainly related to plant height, spike length, 1000 kernel weight and test weight. The influence of 1000 kernel weight on grain yield in both environments seems to cause from the fact that grain yield in wheat is frequently the sink limited, and for this reason, the 1000 kernel weight has been reported as a promising trait for increasing grain yield in wheat under different conditions. The nearly equal value of correlation and path coefficients of plant height and grain yield showed plant height had positive and direct effect on grain yield, in both conditions and suggesting a criteria trait for improving of grain yield. The results showed that genotype 12 (CS/TH.SC//3*PVN/3/MIRLO/BUC/4/MILAN/5/ TILHI) is a high yielding potential genotype in moisture limited conditions.

scholarly journals Evaluation of agronomic traits and assessment of genetic variability in some popular wheat genotypes cultivated in Saudi Arabia

2019 ◽  
pp. 847-856 ◽  
Author(s):  
Soleman M. Al-Otayk
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Plant Height ◽  
Bread Wheat ◽  
Coefficient Of Variation ◽  
Agronomic Traits ◽  
Kernel Weight ◽  
Wheat Genotypes ◽  
Days To Heading ◽  
Days To Maturity

The present study was carried out to evaluate agronomic traits and assessment of genetic variability of some wheat genotypes at Qassim region, Saudi Arabia', during 2010/11 and2011/12 seasons. Fourteen wheat genotypes including five bread wheat and nine durum wheat genotypes were evaluated in randomized complete block design with three replications. The genotypes were evaluated for ten different yield contributing characters viz., days to heading, days to maturity, grain filling period, grain filling rate, plant height, number of spikes m-2, kernels spike-1, 1000-kernel weight, grain yield and straw yield. The combined analysis of variance indicated the presence of significant differences between years for most characters. The genotypes exhibited significant variation for all the characters studied indicating considerable amount of variation among genotypes for each character. Maximum coefficient of variation was observed for number of spikes m-2 (17%), while minimum value was found for days to maturity. Four genotypes produced maximum grain yield and statistically similar, out of them two bread wheat genotypes (AC-3 and SD12) and the other two were durum wheat (AC-5 and BS-1). The genotypes AC-3, AC-5 and BS-1 had higher grain yield and stable in performance across seasons. The estimation of phenotypic coefficient of variation in all the traits studied was greater than those of the genotypic coefficient of variation. High heritability estimates (> 0.5) were observed for days to heading, days to maturity, and plant height, while the other characters recorded low to moderate heritability. The high GA % for plant height and days to heading (day) was accompanied by high heritability estimates, which indicated that heritability is mainly due to genetic variance. Comparatively high expected genetic advances were observed for grain yield components such as number of kernels spike-1 and 1000-kernel weight. Grain yield had the low heritability estimate with a relatively intermediate value for expected genetic advance. The results of principle component analysis (PCA) indicated that the superior durum wheat genotypes for grain yield in the two seasons (AC-5 and BS-1) are clustered in group II (Fig. 2). Also, the superior two bread wheat genotypes (AC-3 and SD12) were in group I. Therefore, it could be future breeding program to develop new high yielding genotypes in bread and durum wheat.

GENOTYPIC AND PHENOTYPIC VARIABILITY, HERITABILITY AND PHENOTYPIC CORRELATION FOR YIELD AND YIELD COMPONENTS IN BREAD WHEAT VARIETIES

2001 ◽  
Vol 49 (3) ◽  
pp. 237-242 ◽  
Author(s):  
K. Z. Korkut ◽  
I. BAŞER ◽  
O. Bilgin
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Bread Wheat ◽  
Yield Components ◽  
Phenotypic Variability ◽  
Kernel Weight ◽  
Phenotypic Correlation ◽  
Genotypic Variability ◽  
Wheat Varieties ◽  
Yield And Yield Components

This research was conducted to determine the effect of genetic and phenotypic variability on the yield and yield components of some bread wheat varieties over a period of four years (1995–1998). Experiments were established according to a completely randomised block design with three replicates in the Experimental Field of Tekirda đ Agricultural Faculty, Thrace University. In the present research, genotypic and phenotypic variability, heritability and phenotypic correlation coefficients were estimated for plant height, spike length, number of spikelets per spike, number of spikes per square metre, thousand kernel weight, test weight and grain yield per hectare. The results of data analyses showed that the highest genotypic variability was obtained for per hectare yield, whereas the highest phenotypic variability values were found for plant height, thousand kernel weight and grain yield. For plant height, thousand grain yield and test weight, the broad sense heritability coefficient was found to be the highest, while it was low for spike length, number of spikelets per spike and number of Key words: bread wheat, genotypic variability, phenotypic variability, heritability coefficient, phenotypic correlation, grain yield

scholarly journals Effects of Sowing Dates on Yield and Yield Components of Different Varieties of Wheat (Triticum aestivum L.) in Western Uttar Pradesh

2021 ◽  
Vol 8 (4) ◽  
pp. 188-192
Author(s):  
Y. P. Singh ◽  
◽  
Satybhan Singh ◽  
V. K. Dhangrah ◽  
Tripuresh Mishra ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Agricultural Research ◽  
Test Weight ◽  
Yield Attributes ◽  
Straw Yield ◽  
Days To Flowering ◽  
Yield And Yield Components ◽  
Days To Maturity

An experiment was conducted during Rabi season (November-December) of 2018–19 to study the effect of three dates of sowing (26th November, 11th December and 25th December) on growth, yield attributes and yield of fivewheat varieties (HD-2967, HD-3086, WH-1105, PBW-343 and PBW-226) at Agricultural Research Farm of IFTM University, Moradabad (UP) India. The experiment was laid out in Factorial Randomized Design with two replications. Sowing was done at spacing of 22.5 cm in sandy loam soil. The observations were recorded on growth, flowering, maturity, yield and yield components. Analysis of variance showed the significant variations were observed for the characters viz. plant height, days to flowering, spikes per plant, days to maturity, grain yield, test weight, straw yield, biological yield and harvest index due to changing dates of sowing. However, varietal variations were recorded for plant height, days to flowering, spikes per plant, days to maturity and test weight. Wheat sown on 26th November recorded significant increase in plant height, tillers plant-1, spikes-1 plant, grain yield and straw yield over late sowing on 11th December and 25th December. There was no significant variation among varieties for yield and yield contributing traits such as grains spike-1, grain and straw yield. Significant interaction effects between dates of sowing and varieties were found for days to flowering which showed that the variety HD-2967 is as best wheat variety for early sown and PBW-226 for late sown conditions in order to obtain better returns.

Effect of nitrogen and zinc on yield, protein content and quality of wheat in Egypt

1976 ◽  
Vol 87 (2) ◽  
pp. 451-454 ◽  
Author(s):  
S. A. M. Youssef ◽  
A. Y. Abdel-Rahman
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Kernel Weight ◽  
Grain Weight ◽  
Spike Length ◽  
Weight Protein ◽  
Linear Manner

SummaryGrain yield, plant height, spike length, grain weight per spike, 100-kernel weight, protein quantity and quality of Mexipak wheat grown with four rates of applied nitrogen (0, 75, 150 and 225 kg N/ha) and five rates of applied zinc (0, 1·25, 2·5, 5·0 and 7·5 kg Zn/ha) were measured. All these attributes were affected significantly by nitrogen fertilization in a linear manner. Differences among rates of applied zinc were significant for grain weight per spike, 100-kernel weight, grain yield and protein quantity and quality.

EFFECT OF DATES AND RATES OF SOWING ON YIELD AND YIELD COMPONENTS OF NARBON VETCH UNDER SEMI-ARID CONDITIONS

2001 ◽  
Vol 49 (1) ◽  
pp. 103-105 ◽  
Author(s):  
A. M. Tawaha ◽  
M. A. Turk
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Field Experiments ◽  
Grain Weight ◽  
Arid Conditions ◽  
Yield And Yield Components ◽  
1000 Grain Weight ◽  
Semi Arid ◽  
Northern Jordan

Field experiments were conducted during the winter seasons of 1998–1999 and 1999–2000 at Houfa in northern Jordan, to study the effect of the date and rate of sowing on the yield and yield components of narbon vetch (Vicia narbonensis L.). Progressive delays in sowing beyond 1 st January led to yield reductions of 11.1 and 17.9 at successive 15-day intervals. Plant height, pods stem –1, stems m –2 and 1000-grain weight followed the same trend as the yield. Grain yield was not significantly affected by the sowing rate.

scholarly journals Analysis of Some Agronomic Traits of Durum Wheat Under Dryland and Supplemental Irrigation Conditions

2014 ◽  
Vol 60 (4) ◽  
pp. 149-158
Author(s):  
Gohar Afrooz ◽  
Naser Sabaghnia ◽  
Rahmatollah Karimizadeh ◽  
Fariborz Shekari
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Agronomic Traits ◽  
Kernel Weight ◽  
Test Weight ◽  
Selection Strategy ◽  
Stressed Condition ◽  
Supplemental Irrigation ◽  
Physiological Maturity ◽  
Peduncle Length

Abstract Knowledge about the extent of variability and the association among traits are of a high value for any breeding efforts. The objective of this investigation is to evaluate the agro-morphological traits in a set of durum wheat genotypes under supplemental irrigation and dry land conditions. Results showed that principal component (PC) analysis had grouped the measured traits into four main components that altogether accounted for 77% of the total variation under non-stressed condition and 87% under water-stressed condition. With regard to the first four PCs, peduncle length, agronomic score, grain yield, vigority, test weight, days to physiological maturity and thousand kernel weight have shown to be the most important variables affecting the performance of durum wheat under non-stressed condition. In the first four PCs at the water- stressed condition, agronomic score, grain yield, vigority, days to physiological maturity, test weight and peduncle length have been shown to be the important variables under water-stressed condition. The results of factor analysis relatively confirmed the results of PC analysis. Our findings indicated that a selection strategy should take into consideration of agronomic score and days to physiological maturity under non-stressed condition while plant height and spike length under water-stressed condition. Therefore, the above-mentioned traits could be used as indirect selection criteria for genetic improvement of grain yield in durum wheat, especially in early generations of breeding programmes

Evaluation of oat germplasm for resistance to diclofop-methyl

1991 ◽  
Vol 71 (2) ◽  
pp. 491-495 ◽  
Author(s):  
Solomon Kibite ◽  
K. Neil Harker
Keyword(s):  
Grain Yield ◽  
Key Words ◽  
Avena Sativa ◽  
Field Experiments ◽  
Herbicide Tolerance ◽  
Kernel Weight ◽  
Avena Fatua ◽  
Test Weight ◽  
Resistant Cultivars ◽  
Parental Lines

In field experiments at Lacombe, Alberta, four diclofop-methyl tolerant oat (Avena sativa L.) genotypes introduced from Australia generally exhibited greater tolerance to postemergence applications of diclofop-methyl at 0.8 kg a.i. ha−1 than five Canadian oat genotypes. Grain yield, height, test weight and kernel weight reductions caused by the herbicide were generally less for the Australian than the Canadian genotypes. However, the level of tolerance observed in the Australian genotypes was not sufficient to justify their use as parental lines to develop diclofop-methyl resistant cultivars. Key words: Avena sativa L., Avena fatua L., oat (wild), herbicide tolerance

scholarly journals Comparative Genetic Effect of Dwarfing Genes on Yield and Yield Contributing Traits in Bread Wheat (Triticum aestivum L.)

2014 ◽  
Vol 18 (2) ◽  
pp. 49-55
Author(s):  
MA Jahan ◽  
MS Hossain ◽  
M Khalekuzzaman ◽  
MM Hassan
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Plant Height ◽  
Bread Wheat ◽  
Yield Components ◽  
Genetic Effect ◽  
Triticum Aestivum L ◽  
High Yield ◽  
Strong Positive Correlation ◽  
Dwarfing Genes

Norin 10 based dwarfing genes (Rht1 and Rht2) have been widely exploited for increasing the grain yield in bread wheat (Triticum aestivum L.) by improving partitioning of assimilates to grain. Eight semi-dwarf wheat genotypes having either Rht1 or Rht2 dwarfing genes were compared with a tall control named, Kheri (rht) having no dwarfing genes were evaluated at Rajshahi University, Bangladesh for yield and yield contributing traits. Significant differences in grain yield and yield components were observed in genotypes under study showing the effects of dwarfing genes. Genotype Seri 82 (Rht1) and Kanchan (Rht2) had medium plant height of 75.73 and 72.22 cm respectively, highest number of tillers/plant (7.33 and 7.67), highest number of spikes/plant (6.33 and 6.67) resulted the highest grain yield per plant. Because the dwarfing genes not only provide lodging tolerance but also perhaps pleiotropically affected high yield by allowing more tillers to survive. Number of tillers/plant and number of spikes/plant showed very strong positive correlation with grain yield per plant in all the genotypes. Kheri (rht) with highest plant height (95.17cm) reduced number of tillers/plant (4.00) and spikes/plant (3.67) had the lowest grain yield per plant (3.85g). Aghrani possessed significantly the highest number of grains/spike with medium grain yield/plant (5.94g). The degree of relationship varied from genotype to genotype.DOI: http://dx.doi.org/10.3329/pa.v18i2.18075 Progress. Agric. 18(2): 49 - 55, 2007

scholarly journals Makarnalık Buğdayda (Triticum Durum L.) Bölünerek Verilen Üst Gübre Uygulamalarının Verim ve Verim Komponentleri Üzerine Etkisi

2021 ◽  
Vol 9 (11) ◽  
pp. 2041-2048
Author(s):  
Arzu Mutlu
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Triticum Durum ◽  
Block Design ◽  
Wheat Variety ◽  
Growing Season ◽  
Spike Length ◽  
Randomized Complete Block Design ◽  
The World

This research was conducted with durum wheat variety (Alatay) at farmer conditions in Bozova district of Şanlıurfa province in 2018-19 and 2019-20 growing season according to a randomized complete block design with three replications. This study was conducted to determine the effect of dividing the top fertilizer in different development periods of wheat on grain yield and some yield factors (plant height, spike length, number of grains per spike, grain weight per spike) in order to struggle the drought experienced due to global warming in the world and in our country. According to the research results, it was determined that grain yield, plant height, spike length, number of grains per spike, weight of grains per spike ranged from 347.50-648.33 kg/da, 78.16-98.33 cm, 6.28-6.91 cm, 32.00 number/spike and 64.16 number/spike 2.47 gr/spike and 2.77 gr/spike respectively. The aim of the experiment is to determine how the top-dressing is divided and how the plant benefits from the moisture and nitrogen fertilizer in the soil and how it affects the grain yield and yield components of the plant.

Yield and grain quality of plump-kernelled spring triticale windrowed at different kernel water concentrations

1997 ◽  
Vol 77 (4) ◽  
pp. 561-566 ◽  
Author(s):  
P. E. Jedel ◽  
D. F. Salmon
Keyword(s):  
Grain Yield ◽  
Grain Quality ◽  
Field Experiments ◽  
Secondary Growth ◽  
Kernel Weight ◽  
Test Weight ◽  
Canadian Prairie ◽  
Spring Triticale ◽  
Dry Down

Little information is available on the response of plump-kernelled spring triticales (X Triticosecale Wittmack) to windrowing at different kernel water concentrations (KWC). The objective of this research was to determine the effects of windrowing at KWCs of 1600 g kg−1 or less on the yield and grain quality of spring triticales compared with a Canadian prairie spring (CPS) wheat (Triticum aestivum L. 'Oslo'). Field experiments were conducted from 1989 to 1993 at Lacombe, AB, using the spring triticale cv. Wapiti in all years, and the cvs. Banjo and Frank in 1992 and 1993. Rate of dry-down varied between the cultivars and years. Oslo dried at a rate of 1.67 to 3.23 g kg−1 per growing degree day (GDD 0 °C basis). The rate of dry-down for the triticales ranged from 2.80 to 10.80 g kg−1 per GDD. Although the triticales reached physiological maturity much later than Oslo in any given year, they dried at a faster rate (with fewer GDDs) than Oslo. Windrowing at KWC of up to 1600 g kg−1 (62% moisture) had no effect on test weight, grain protein or germination of harvested grain. Effects of windrowing on grain yield varied but, when yield differences were significant, windrowing at 430 to 530 g kg−1 (30 to 35% moisture) optimized grain yield. When effects of windrowing on kernel weight were significant, kernel weight increased as KWC at windrowing decreased. When windrowing to curtail secondary growth of spring triticale is necessary in central Alberta, windrowing at 430 to 530 g kg−1 (30 to 35% moisture) is recommended to optimize yield without loss of test weight, protein content or germination. Key words: Spring triticale, Canadian prairie spring wheat, windrowing, kernel water concentration

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