Development and characterization of GR2E Golden rice introgression lines

Development and characterization of GR2E Golden rice introgression lines

Golden Rice with β-carotene in the grain helps to address the problem of vitamin A deficiency. Prior to commercialize Golden Rice, several performance and regulatory checkpoints must be achieved. We report results of marker assisted backcross breeding of the GR2E trait into three popular rice variet...

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Bibliographic Details
Published in:Scientific reports Vol. 11; no. 1; p. 2496
Main Authors: Mallikarjuna Swamy, B. P., Marundan, Severino, Samia, Mercy, Ordonio, Reynante L., Rebong, Democrito B., Miranda, Ronalyn, Alibuyog, Anielyn, Rebong, Anna Theresa, Tabil, Ma. Angela, Suralta, Roel R., Alfonso, Antonio A., Biswas, Partha Sarathi, Kader, Md. Abdul, Reinke, Russell F., Boncodin, Raul, MacKenzie, Donald J.
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 28-01-2021
Nature Publishing Group
Nature Portfolio
Subjects:
631/208
631/449
631/61
Carotenoids
Families & family life
Field study
Field tests
Genetically altered foods
Humanities and Social Sciences
multidisciplinary
Research centers
Rice
Science
Science (multidisciplinary)
Seeds
Vitamin A
Vitamin deficiency
β-Carotene
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Summary:Golden Rice with β-carotene in the grain helps to address the problem of vitamin A deficiency. Prior to commercialize Golden Rice, several performance and regulatory checkpoints must be achieved. We report results of marker assisted backcross breeding of the GR2E trait into three popular rice varieties followed by a series of confined field tests of event GR2E introgression lines to assess their agronomic performance and carotenoid expression. Results from confined tests in the Philippines and Bangladesh have shown that GR2E introgression lines matched the performance of the recurrent parents for agronomic and yield performance, and the key components of grain quality. Moreover, no differences were observed in terms of pest and disease reaction. The best performing lines identified in each genetic background had significant amounts of carotenoids in the milled grains. These lines can supply 30–50% of the estimated average requirements of vitamin A.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-82001-0