scholarly journals Different mechanisms of adaptation to cyclic water stress in two South Australian bread wheat cultivars

2008 ◽  
Vol 59 (12) ◽  
pp. 3327-3346 ◽  
Author(s):  
Ali Izanloo ◽  
Anthony G. Condon ◽  
Peter Langridge ◽  
Mark Tester ◽  
Thorsten Schnurbusch
Keyword(s):  
Water Stress ◽  
Bread Wheat ◽  
Wheat Cultivars ◽  
Mechanisms Of Adaptation

scholarly journals Effect of Water Stress on Germination and Seedling Characteristics of Some bread Wheat Cultivars (Triticum aestivum)

2021 ◽  
Vol 7 (2) ◽  
pp. 151-170
Author(s):  
Peyman Aligholizadeh Moghaddam ◽  
Gholam Ali Ranjbar ◽  
Hammid Najafi-Zarrini ◽  
Hosein Shahbazi ◽  
◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Water Stress ◽  
Bread Wheat ◽  
Wheat Cultivars ◽  
Effect Of Water ◽  
Seedling Characteristics

scholarly journals A morpho-physiological approach differentiates bread wheat cultivars of contrasting tolerance under cyclic water stress

2014 ◽  
Vol 171 (14) ◽  
pp. 1256-1266 ◽  
Author(s):  
Katalin Jäger ◽  
Attila Fábián ◽  
Gabriella Eitel ◽  
László Szabó ◽  
Csilla Deák ◽  
...  
Keyword(s):  
Water Stress ◽  
Bread Wheat ◽  
Wheat Cultivars ◽  
Physiological Approach

Changes in rheological properties and endosperm peroxidase activity associated with breeding for an osmoregulation gene in bread wheat

1999 ◽  
Vol 50 (6) ◽  
pp. 963 ◽  
Author(s):  
J. M. Morgan
Keyword(s):  
Water Stress ◽  
Bread Wheat ◽  
Peroxidase Activity ◽  
Genetic Linkage ◽  
Wheat Cultivars ◽  
Dough Strength ◽  
Linkage Evidence ◽  
Linkage Effect ◽  
Lower Maximum ◽  
Strength Effect

Backcross lines which had been bred for an osmoregulation gene to improve the drought tolerance of 3 commercial bread wheat cultivars were tested for standard grain, dough, and baking characteristics. Three field sites were used to provide a range of protein contents of 10–14%. It was found that backcross lines with high osmoregulation had alterations in dough strength which could only be understood in terms of genetic linkage. Evidence of a linkage effect was found by comparing lines with recurrent parents in a season of low water stress, i.e. where yields and hence protein contents of each group were the same. On average, lines which had been bred for high osmoregulation had significantly shorter development times and significantly lower maximum resistances to extension than recurrent parents. Other parameters were not significantly different. A probable explanation of the dough strength effect lay in a difference in peroxidase activity due to linkage between the endosperm peroxidase, Per-A4, locus, and the osmoregulation, or, locus. There was an expectation, from published work, that dough strength could be affected by peroxidase. The hypothesis was confirmed by measurements of peroxidase activity. On average, lines with high osmoregulation (lower dough strength) had lower peroxidase activities than recurrent parents (higher dough strength). This effect, however, depended on protein content and genotype. Significance for plant breeding is discussed.

Nitrogen Metabolism and Yellowberry of Two Bread Wheat Cultivars 1

Crop Science ◽  
1983 ◽  
Vol 23 (1) ◽  
pp. 20-22 ◽  
Author(s):  
James F. Henson ◽  
J. Giles Waines
Keyword(s):  
Nitrogen Metabolism ◽  
Bread Wheat ◽  
Wheat Cultivars

Contribution of Stem Dry Matter to Grain Yield in Wheat Cultivars

1991 ◽  
Vol 18 (1) ◽  
pp. 53 ◽  
Author(s):  
PC Pheloung ◽  
KHM Siddique
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Dry Matter ◽  
Field Experiments ◽  
Yield Potential ◽  
Percentage Reduction ◽  
Wheat Cultivars ◽  
Activity Increase ◽  
Structural Carbohydrate ◽  
Days After Anthesis

Field experiments were conducted in the eastern wheat belt of Western Australia in a dry year with and without irrigation (1987) and in a wet year (1988), comparing three cultivars of wheat differing in height and yield potential. The aim of the study was to determine the contribution of remobilisable stem dry matter to grain dry matter under different water regimes in old and modern wheats. Stem non-structural carbohydrate was labelled with 14C 1 day after anthesis and the activity and weight of this pool and the grain was measured at 2, 18 and 58 days after anthesis. Gutha and Kulin, modern tall and semi-dwarf cultivars respectively, yielded higher than Gamenya, a tall older cultivar in all conditions, but the percentage reduction in yield under water stress was greater for the modern cultivars (41, 34 and 23%). In the grain of Gamenya, the increase in 14C activity after the initial labelling was highest under water stress. Generally, loss of 14C activity from the non-structural stem dry matter was less than the increase in grain activity under water stress but similar to or greater than grain activity increase under well watered conditions. Averaged over environments and cultivars, non-structural dry matter stored in the stem contributed at least 20% of the grain dry matter.

Responses of Some Turkish Wheat Cultivars to Vernalization and Photoperiod

1988 ◽  
Vol 24 (2) ◽  
pp. 237-245
Author(s):  
Serpil Terzioğlu
Keyword(s):  
Bread Wheat ◽  
Normal Development ◽  
Photoperiodic Response ◽  
Reliable Information ◽  
Floral Initiation ◽  
Wheat Cultivars ◽  
Primary Shoot ◽  
Time Of Year ◽  
Short Days

SUMMARYThe vernalization and photoperiodic response of six locally adapted bread wheat cultivars grown under natural daylength conditions during the summer or winter months was examined in glasshouse experiments. The wheat was vernalized by chilling imbibed grains at 2 ± 1°C for 0, 15 or 45 days. Vernalization for 45 days followed by long summer days led to floral initiation in all cultivars within 28 days but vernalization for 0 or 15 days only led to floral initiation in one cultivar. Vernalization followed by long days reduced the time from transplanting to anthesis, resulting in early ear emergence. Vernalization followed by short days accelerated the development of all the cultivars, but normal development could also occur without vernalization at this time of year. Apical differentiation of the primary shoot and its length and development gave the most reliable information on the period of vernalization required.

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