Evaluation of Grain Yield and Its Components for Some Somaclones and Doubled Haploid Lines of Bread Wheat

2013 ◽  
Vol 17 (4) ◽  
pp. 13-27
Author(s):  
Hoda M. M. El-Gharbawy ◽  
K. I. M. Gad ◽  
S. R. S. Sabry
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Doubled Haploid ◽  
Doubled Haploid Lines

YIELD STABILITY OF DOUBLE HAPLOID LINES OF BARLEY

1978 ◽  
Vol 58 (4) ◽  
pp. 929-933 ◽  
Author(s):  
E. REINBERGS ◽  
L. S. P. SONG ◽  
T. M. CHOO ◽  
K. J. KASHA
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Doubled Haploid ◽  
Regression Coefficient ◽  
Regression Method ◽  
Linear Regression Method ◽  
Breeding Methods ◽  
Doubled Haploid Lines ◽  
The Mean ◽  
The Stability

The effect of complete homozygosity and homogeneity on stability of grain yield in barley was studied in 38 doubled haploid lines derived from F1 plants of six biparental crosses. The number of doubled haploid lines in each cross ranged from 3 to 12. These along with 13 check cultivars were evaluated at five locations in Ontario in 1975 and 1976. The linear regression method proposed by Eberhart and Russell in 1966 was used to analyze the stability of grain yield. In general, the response of doubled haploid lines to different environments, based upon the regression coefficient, did not differ from the response of the check cultivars. Similar responses were also observed among check cultivars, among crosses, and among doubled haploid lines within crosses. Furthermore, the pooled deviation from regression mean squares for the check cultivars was not different from that for the doubled haploid lines. The mean yield of the doubled haploid lines was as high as that of the check cultivars. Significant differences in mean yield among crosses was not detectable but considerable genetic variability in grain yield was found among lines within three of the crosses. It appears that under Ontario conditions homogeneous and homozygous lines derived by the doubled haploid method are as good agronomically and have yields as stable as the licensed cultivars developed by conventional breeding methods.

Diallel Analysis of Grain Yield in Barley Using Doubled-Haploid Lines*

1986 ◽  
Vol 97 (2) ◽  
pp. 129-137 ◽  
Author(s):  
T. M. Choo ◽  
A. Kotecha ◽  
E. Reinbergs ◽  
L. S. P. Song ◽  
S. O. Ffjer
Keyword(s):  
Grain Yield ◽  
Doubled Haploid ◽  
Diallel Analysis ◽  
Doubled Haploid Lines

Cross prediction in barley using doubled-haploid lines

Genome ◽  
1988 ◽  
Vol 30 (3) ◽  
pp. 366-371 ◽  
Author(s):  
T. M. Choo
Keyword(s):  
Confidence Interval ◽  
Grain Yield ◽  
Doubled Haploid ◽  
Heading Date ◽  
Prediction Method ◽  
The Other ◽  
Cross Prediction ◽  
Doubled Haploid Lines ◽  
The Cross ◽  
Doubled Haploid Breeding

The usefulness of the cross prediction method developed by J. L. Jinks and H. S. Pooni (1976, Heredity 36: 253–266) in a doubled-haploid breeding program was evaluated. Doubled-haploid lines were derived from two barley crosses by the bulbosum method. Doubled-haploid lines from each cross were divided into two sets, one with 52 lines and the other 58 to 79 lines. These doubled-haploid lines were evaluated for grain yield, heading date, and plant height in hill plots with 10 replications at Elora, Ontario, in 1973 and 1974. The mean and phenotypic variance of doubled-haploid lines from the first set were used to calculate the predicted distribution under the assumption of normality. The predicted distribution was compared with that observed from the other set by a χ2 test. It was found that the predicted distribution differed from the observed distribution in the majority of the cases and the two tails of the distribution accounted for much of the difference in 6 of the 12 (= 3 characters × 2 crosses × 2 years) cases. The numbers of transgressive lines and best lines were also predicted for the three characters in the two crosses in each year. Twenty of the 24 observed numbers of transgressive lines were not within their 95% confidence interval but 8 of the 12 observed numbers of best lines were within their 95% confidence interval. A significant correlation coefficient between predicted and observed numbers of transgressive lines was obtained for grain yield and heading date. The prediction that one cross had more high-yielding lines and fewer short-stature lines than the other cross agreed well with the actual observation. It appears that the cross prediction method is of value in predicting the cross potential and can be used for identifying superior crosses in a doubled-haploid breeding program in barley.Key words: barley, haploids, cross prediction.

Relationship of grain micronutrient concentrations and grain yield components in a doubled haploid bread wheat (Triticum aestivum) population

2021 ◽  
Author(s):  
Mantshiuwa C. Lephuthing ◽  
Vicki L. Tolmay ◽  
Timmy A. Baloyi ◽  
Tsepiso Hlongoane ◽  
Tebogo A. Oliphant ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Bread Wheat ◽  
Doubled Haploid ◽  
Yield Components ◽  
Grain Yield Components ◽  
Relationship Of

Grain Yield Stability Analysis of Barley Doubled Haploid Lines in Algerian Semi-arid Zones

2016 ◽  
Vol 8 (2) ◽  
pp. 43-51
Author(s):  
D. Ramla ◽  
M.S. Yakhou ◽  
N. Bilek ◽  
M. Hamou ◽  
A. Hannachi ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Grain Yield ◽  
Doubled Haploid ◽  
Yield Stability ◽  
Arid Zones ◽  
Doubled Haploid Lines ◽  
Semi Arid

Exogenous sodium nitroprusside increases antioxidative potential and grain yield of bread wheat exposed to cadmium

2018 ◽  
Vol 51 (2) ◽  
Author(s):  
Muhammad Arshad ◽  
Muhammad Iqbal ◽  
Muhammad Yasin Ashraf ◽  
Qasim Ali ◽  
Naeem Iqbal
Keyword(s):  
Grain Yield ◽  
Sodium Nitroprusside ◽  
Bread Wheat

scholarly journals Grain yield and correlated traits of bread wheat lines: Implications for yield improvement

2021 ◽  
Author(s):  
Muhammad Irfan Ullah ◽  
Shahzadi Mahpara ◽  
Rehana Bibi ◽  
Rahmat Ullah Shah ◽  
Rehmat Ullah ◽  
...  
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Yield Improvement ◽  
Correlated Traits ◽  
Wheat Lines

scholarly journals Stress-induced expression of IPT gene in transgenic wheat reduces grain yield penalty under drought

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Ailin Beznec ◽  
Paula Faccio ◽  
Daniel J. Miralles ◽  
Leonor G. Abeledo ◽  
Cecilia Decima Oneto ◽  
...  
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Transcriptional Control ◽  
Field Conditions ◽  
Wild Type ◽  
Ipt Gene ◽  
Receptor Like Kinase ◽  
Biomass Components ◽  
Yield Penalty ◽  
Wild Type Control

Abstract Background The heterologous expression of isopentenyl transferase (IPT) under the transcriptional control of the senescence-associated receptor-like kinase (SARK) promoter delayed cellular senescence and, through it, increased drought tolerance in plants. To evaluate the effect of pSARK::IPT expression in bread wheat, six independent transgenic events were obtained through the biolistic method and evaluated transgene expression, phenology, grain yield and physiological biomass components in plants grown under both drought and well-irrigating conditions. Experiments were performed at different levels: (i) pots and (ii) microplots inside a biosafety greenhouse, as well as under (iii) field conditions. Results Two transgenic events, called TR1 and TR4, outperformed the wild-type control under drought conditions. Transgenic plants showed higher yield under both greenhouse and field conditions, which was positively correlated to grain number (given by more spikes and grains per spike) than wild type. Interestingly, this yield advantage of the transgenic events was observed under both drought and well-watered conditions. Conclusions The results obtained allow us to conclude that the SARK promoter-regulated expression of the IPT gene in bread wheat not only reduced the yield penalty produced by water stress but also led to improved productivity under well-watered conditions.

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