A PCR/LDR-Based Functional Molecular Marker of Rice ( Oryza Sativa L.) Aroma Allele BADH2-E2
Rice Genomics and Genetics, 2020, Vol. 11, No. 6
Received: 29 Jun., 2020 Accepted: 02 Jul., 2020 Published: 02 Jul., 2020
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This article was first published in Molecular Plant Breeding ( ISSN1672-416X，CN46-1068/S) in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
of betaine aldehyde dehydrogenase 2 (BADH2) in rice leading to the accumulation of 2-acetyl-1-pyrrolidine (2AP), the substrate of enzymatic reaction
, makes the rice flavor. The rice aroma allele BADH2-E2 has been widely used in aroma rice breeding in China. In this study, a PCR/LDR-based functional molecular marker was developed according to the 7bp deletion in the second exon of badH2-E2 aroma allele. Using PCR/LDR-based markers, the genotypes of Shenfan24, Shenfan26 and their F1 hybrids in the badH2-E2 locus could be accurately identified, and screening the F2 population derived from the cross of Shenfan24 and Shenfan26 shows that the segregation ratio of badH2-E2 positive homozygous, heterozygous and badH2-E2 negative homozygous were 1:2:1. The results of this study provide a new type of molecular marker for marker-assisted breeding and have certain application potential.
Rice; Aroma gene; badh2-E2; PCR/LDR; Molecular marker
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Rice Genomics and Genetics
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