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

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Charan Singh
Puja Srivastava
Achla Sharma
Harinderjeet Kaur
V. S. Sohu
N. S. Bains

Abstract

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**).

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How to Cite
Singh, C., Srivastava, P., Sharma, A., Kaur, H., Sohu, V. S., & Bains, N. S. (2019). Gpc-B1 mediated grain protein enhancement in wheat is compatible with high grain weight at moderated yield thresholds. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, 79(02), 494–498. Retrieved from https://www.isgpb.org/journal/index.php/IJGPB/article/view/2852
Section
Research Article

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