Yield and carbon isotope discrimination in near-isogenic lines of durum wheat differing in glume length

2000 ◽  
Vol 28 (1-2) ◽  
pp. 169-172 ◽  
Author(s):  
N. Watanabe ◽  
H. Miura ◽  
F. Toklu ◽  
H. Ozkan ◽  
I. Genc
Keyword(s):  
Durum Wheat ◽  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Near Isogenic Lines ◽  
Isotope Discrimination ◽  
Isogenic Lines ◽  
Glume Length

Stability of Carbon Isotope Discrimination and Grain Yield in Durum Wheat

Crop Science ◽  
2001 ◽  
Vol 41 (3) ◽  
pp. 677-681 ◽  
Author(s):  
O. Merah ◽  
E. Deléens ◽  
I. Souyris ◽  
M. Nachit ◽  
P. Monneveux
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Isotope Discrimination

scholarly journals Ash content might predict carbon isotope discrimination and grain yield in durum wheat

2001 ◽  
Vol 149 (2) ◽  
pp. 275-282 ◽  
Author(s):  
Othmane Merah ◽  
Eliane Deléens ◽  
Irenée Souyris ◽  
Philippe Monneveux
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Ash Content ◽  
Isotope Discrimination

Environmental Factors Determining Carbon Isotope Discrimination and Yield in Durum Wheat under Mediterranean Conditions

Crop Science ◽  
2003 ◽  
Vol 43 (1) ◽  
pp. 170 ◽  
Author(s):  
J. L. Araus ◽  
D. Villegas ◽  
N. Aparicio ◽  
L. F. García del Moral ◽  
S. El Hani ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Durum Wheat ◽  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Isotope Discrimination ◽  
Mediterranean Conditions

Relationships between ash content, carbon isotope discrimination and yield in durum wheat

1998 ◽  
Vol 25 (7) ◽  
pp. 835 ◽  
Author(s):  
J.L. Araus ◽  
T. Amaro ◽  
J. Casadesús ◽  
A. Asbati ◽  
M.M. Nachit
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Flag Leaf ◽  
Dry Mass ◽  
Ash Content ◽  
The Other ◽  
Isotope Discrimination ◽  
Mass Basis

The relationships between ash content, carbon isotope discrimination and yield were studied in durum wheat (Triticum durum Desf.) grown in a Mediterranean region (north-western Syria) under three different water regimes (hereafter referred to as environments). Ash content (on dry mass basis) was measured in the flag leaf about 3 weeks after anthesis (leaf ash) and in mature kernels (kernel ash), whereas Δ was analysed in the penultimate leaf at heading (leaf Δ) and in mature kernels (kernel Δ). Leaf Δ was weakly or not related with the other parameters. Leaf ash correlated positively with kernel Δ (P≤0.001), even in the driest environment, which gave a mean yield of 1.5 t ha-1. For the four parameters, correlations with yield remained significant (P≤0.001) after correcting for days to heading. All the parameters showed a higher broad-sense heritability than yield. The parameter that showed the best genetic correlation with grain yield was kernel ash (r2= 0.88), followed by kernel Δ (r2 = 0.69) and leaf ash (r2 = 0.64), whereas leaf Δ (r2 = 0.26) was the least correlated parameter. Except for kernel ash, these parameters always correlated positively with grain yield. The negative relationships of kernel ash (on dry mass basis) with yield and all the other parameters may be attributable to the finding that kernel ash was higher in those genotypes more affected by drought during grain filling. Thus, kernel ash was negatively related (P≤0.001) with total kernel mass per spike. Prediction of grain yield through multiple linear regression suggests that kernel ash can be used as complementary criterion to either kernel Δ or leaf ash.

Comparative performance of carbon isotope discrimination and canopy temperature depression as predictors of genotype differences in durum wheat yield in Spain

2002 ◽  
Vol 53 (5) ◽  
pp. 561 ◽  
Author(s):  
C. Royo ◽  
D. Villegas ◽  
L. F. García del Moral ◽  
S. Elhani ◽  
N. Aparicio ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Canopy Temperature ◽  
Total Carbon ◽  
Total Carbon Content ◽  
Isotope Discrimination ◽  
Canopy Temperature Depression ◽  
Wide Range ◽  
Temperature Depression

The relationships between carbon isotope discrimination (Δ) in mature kernels, canopy temperature depression (CTD) during anthesis and grain filling, 1000-kernel weight (TKW), total carbon content of mature kernels, and yield were studied in durum wheat (Triticum turgidum L. var. durum) grown in Spain (western Mediterranean basin). Twenty-five durum wheat genotypes were grown in 2 regions (NE and SE Spain) and under 2 water regimes (rainfed v. support irrigation) from 1997 to 1999 (i.e. a total of 12 trials). Principal component analysis placed yield and Δ on the same axis. Pearson’s correlation and stepwise analysis confirmed that Δ was the trait that best assessed genotype differences in yield within trials, and was followed, at a considerable distance, by TKW. Our results also demonstrated the extremely poor performance of CTD throughout the wide range of growing conditions in this study.

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