The genetic origin of fragrance in NERICA1
- 211 Downloads
In this study, we investigated the cause and origin of fragrance in NERICA1, a fragrant rice inbred line developed from an interspecific cross between two non-fragrant parents. The genetic cause of fragrance in NERICA1 was found to be due to a previously reported mutation in the BADH2 gene, the same allele responsible for the majority of modern fragrant rice varieties. Haplotype analysis around the BADH2 gene in NERICA1, its parents, and 95 other varieties carrying the badh2.1 allele identified the source of the badh2.1 allele in NERICA1 was a fragrant tropical japonica variety, WAB638-1, which had been growing in the vicinity of the NERICA1 nursery during varietal development. The allele-specific marker for the badh2.1 allele consistently predicted fragrance in the diverse African germplasm tested, making it very useful for marker-assisted breeding of fragrant rice varieties in Africa.
KeywordsRice Fragrance NERICA1 BADH2
We are grateful to the Generation Challenge Program for providing a 6-month fellowship to MDA that allowed this research to be conducted in the lab of SRM and the Plant Genome Program of the National Science Foundation (Award Number #0606461).
- Buttery RG, Ling LC, Juliano BO (1982) 2-acetyl-1-pyrroline: an important aroma component of cooked rice. Chem Ind (London) 12:958–959Google Scholar
- Dorward A, Spencer D, Abalu G, Philip D, Ogungbile D (2008) Evaluation of adoption of NERICA and other improved upland rice varieties following varietal promotion activities in Nigeria: a study for the Gatsby and Rockefeller Foundations. Final report. School of Oriental and African Studies, University of LondonGoogle Scholar
- Itani T (1993) History, cultivation, and breeding of aromatic rice cultivars. Bull Hiroshima Pref Univ 5:267–281Google Scholar
- Jodon NE (1944) The inheritance of flower fragrance and other characters in rice. J Am Soc Agron 36:844–848Google Scholar
- Kadam BS, Patankar VK (1938) Inheritance of aroma in rice. Chronica Botanica 4:32Google Scholar
- Qiu ZJ, Zhang YS (2003) Why fragrant rice produced in Thailand can be sold worldwide? World Agric (China) 2:33–36Google Scholar
- Semagn K, Ndjiondjop MN, Lorieux M, Cissoko M, Jones M, McCouch SR (2007) Molecular profiling of an interspecific rice population derived from a cross between WAB56–104 (Oryza sativa) and CG14 (Oryza glaberrima). Afr J Biotechnol 6:2014–2022Google Scholar
- Sood BC, Siddiq EA (1978) A rapid technique for scent determination in rice. Indian J Genet Plant Breed 38:268–271Google Scholar
- Vaughan DA, Miyazaki S, Miyashita K (2004) The rice gene pool and human migrations. In: Werner D (ed) Biological Resources and Migration, Springer, Berlin, pp 1–13Google Scholar
- WARDA (2008) NERICA Adoption and Impact: summary of findings from four countries. Research and Development Brief August 2008Google Scholar