Gpc-B1 mediated grain protein enhancement in wheat is compatible with high grain weight at moderated yield thresholds

2019 ◽  
Vol 79 (02) ◽  
Author(s):  
Charan Singh ◽  
Puja Srivastava ◽  
Achla Sharma ◽  
Harinderjeet Kaur ◽  
V. S. Sohu ◽  
...  
Keyword(s):  
Protein Content ◽  
Agronomic Traits ◽  
Iron Concentration ◽  
Grain Protein Content ◽  
Grain Weight ◽  
High Yield ◽  
Grain Protein ◽  
Grain Zinc ◽  
B1 Gene ◽  
Physiological Characters

A set of 94 BC2F7 lines (BC RILs), selected for presence of Gpc-B1 gene from the cross Glupro/3*PBW568 were evaluated for morpho-physiological characters including yield and its components, grain protein content, grain zinc and iron concentration for two seasons. Gpc-B1 mediated grain protein enhancement as influenced by combination of other agronomic traits was studied through inter-trait correlations. Grain protein content was positively correlated with plant height (r=0.552**, 0.676**) and 1000-grain weight (r=0.257**, 0.287**) in both years. Lines with high yield conferring combinations of yield components showed lower grain protein content. The results showed that there were no constraints for combining grain weight with Gpc- B1 mediated proteins enhancement provided yield moderation can be exercised. Grain protein contents showed significant and positive correlation with grain zinc (0.557**, 0.764**) and iron concentration (0.542**, 0.595**) indicating that Gpc-B1 mediated enhancement in protein content and not just presence of Gpc-B1 was necessary. Zinc and iron concentration were also positively associated with each other (0.567**, 0.648**).

High-yielding lines of wheat carrying Gpc-B1 adapted to Mediterranean-type environments of the south and west of Australia

2014 ◽  
Vol 65 (9) ◽  
pp. 854 ◽  
Author(s):  
H. A. Eagles ◽  
Robyn McLean ◽  
R. F. Eastwood ◽  
M.-J. Appelbee ◽  
Karen Cane ◽  
...  
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Heading Date ◽  
Grain Protein Content ◽  
Grain Weight ◽  
Wild Emmer ◽  
Grain Protein ◽  
The South ◽  
B1 Gene ◽  
Elite Cultivar

The Gpc-B1 gene from wild emmer has been proposed as a potential mechanism for improving grain protein in bread wheat without reducing grain yield. Near-isolines with and without the Gpc-B1 gene in three Australian-adapted genetic backgrounds, Gladius, Wyalkatchem and VR1128, were compared in 14 experiments across the south and west of Australia for grain yield, grain protein content and grain weight. The donor parents of Gpc-B1 were the Canadian cultivars Burnside and Somerset. One of the 14 experiments was discarded because of inadequate rust control and confounding effects of Yr36, a gene closely linked to Gpc-B1. Heading date and test weight were measured in five experiments. Across all comparisons, Gpc-B1 increased grain protein content and reduced grain weight, with a negligible effect on grain yield. Selected lines containing Gpc-B1 in a Wyalkatchem background had comparable grain yields to the elite cultivar Mace, but with significantly higher grain protein contents, slightly higher grain weights, similar heading dates and acceptable test weights. The development of agronomically acceptable lines containing Gpc-B1 was partially attributed to the removal of undesirable genes from wild emmer during the breeding of the Canadian donor parents and the use of Australian recurrent parents with high test weights.

Relation of grain protein content and some agronomic traits in European cultivars of winter wheat

2012 ◽  
Vol 40 (4) ◽  
pp. 532-541 ◽  
Author(s):  
V. Mladenov ◽  
B. Banjac ◽  
A. Krishna ◽  
M. Milošević
Keyword(s):  
Winter Wheat ◽  
Protein Content ◽  
Agronomic Traits ◽  
Grain Protein Content ◽  
Grain Protein

Relation of grain protein content and some agronomic traits in European cultivars of winter wheat

2012 ◽  
Vol 40 (4) ◽  
pp. 532-541 ◽  
Author(s):  
V. Mladenov ◽  
B. Banjac ◽  
A. Krishna ◽  
M. Milošević
Keyword(s):  
Winter Wheat ◽  
Protein Content ◽  
Agronomic Traits ◽  
Grain Protein Content ◽  
Grain Protein

scholarly journals Marker-assisted improvement of grain protein content and grain weight in Indian bread wheat

Euphytica ◽  
2015 ◽  
Vol 208 (2) ◽  
pp. 313-321 ◽  
Author(s):  
Manish K. Vishwakarma ◽  
B. Arun ◽  
V. K. Mishra ◽  
P. S. Yadav ◽  
H. Kumar ◽  
...  
Keyword(s):  
Protein Content ◽  
Bread Wheat ◽  
Grain Protein Content ◽  
Grain Weight ◽  
Grain Protein

scholarly journals Seeding rate and genotype effects on agronomic performance and grain protein content of durum wheat (Triticum turgidum L. Durum) in south-eastern Ethiopia

2013 ◽  
Vol 13 (58) ◽  
pp. 7693-7710
Author(s):  
Haile D ◽  
◽  
R Nigussie-Dechassa ◽  
W Abdo ◽  
F Girma ◽  
...  
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Protein Content ◽  
Agronomic Traits ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Agronomic Performance ◽  
Seeding Rate ◽  
Eastern Ethiopia ◽  
Number Of Seeds

The use of optimum seeding rate for the genotype may enhance productivity and grain protein content of durum wheat. Therefore, an experiment was conducted at two locations in south-eastern Ethiopia during the main cropping season of 2008 with the objective of elucidating the effects of seeding rate and genotype on agronomic performance and grain protein content of the crop. The experiment consisted of factorial arrangements of four improved durum wheat genotypes and five seeding rates, which were laid out as a randomized complete block design with three replicates. Seeding rates significantly influenced agronomic performances including number of fertile spikes m-2, plant height, number of seeds spike-1, and grain yield. Number of fertile spikes m-2 was increased proportionally with the seeding rate and the highest number (382 spikes m-2) was recorded in the highest seeding rate of 200kg ha-1. Inversely, the highest number of kernels spike-1 (29.8) was at the seeding rate of 100 kg ha-1. The highest grain yield (4341 kg ha-1) was obtained in response to seeding rate of 175 kg ha-1, which was in statistical parity with the yield obtained at the seeding rate of 150 kg ha-1. However, grain protein content was not influenced by the seeding rates. There were significant (P ≤ 0.05) variations among the genotypes for all the agronomic traits measured. The largest number of fertile spikes m-2 was recorded for the genotypes Oda (360 spikes m-2) and Bakalcha (345 spikes m-2). Genotype Illani produced the longest spike (6.9 cm). Oda and Illani produced the highest numbers of seeds spike-1, 38.8 and 36.9, respectively. The number of fertile spikes m-2, number of seeds spike-2 and kernels weight significantly contributed grain yield. The genotypes had exhibited less variation for grain protein content. Except for grain yield and harvest index, seeding rate x genotype interaction had no significant effect on other agronomic traits. Highest grain yields of 4938 kg ha-1 and 4774 kg ha1 were obtained from genotypes Ejersa and Bakalcha when sown at the seeding rate of 150 kg ha-1 and 175 kg ha-1, respectively. Grain protein response was significantly influenced by the interaction effect in which genotype Oda had the highest (12.9%) and lowest (10.5%) protein contents at the highest (200 kg ha-1) and lowest (100 kg ha-1) seeding rates, respectively.

Effect of Gpc-B1 gene on grain protein content and productivity traits in a set of high yielding wheat lines

2018 ◽  
Vol 78 (2) ◽  
pp. 211
Author(s):  
Charan Singh ◽  
Puja Srivastava ◽  
Achla Sharma ◽  
Parveen Chhuneja ◽  
V. S. Sohu ◽  
...  
Keyword(s):  
Protein Content ◽  
Grain Protein Content ◽  
Grain Protein ◽  
B1 Gene ◽  
Wheat Lines
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