Development of functional molecular markers for viviparous germination resistance in rice

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dc.creatorLee, So-Myeong
dc.creatorKwon, Youngho
dc.creatorKim, Sung-Ryul
dc.creatorKang, Ju-Won
dc.creatorPark, Hyeonjin
dc.creatorCha, Jin-Kyung
dc.creatorPark, Dong-Soo
dc.creatorCho, Jun-Hyun
dc.creatorKim, Woojae
dc.creatorEom, Gyu-Hyeon
dc.creatorLee, Jong-Hee
dc.date2024-12-04
dc.date2025-01-26T22:46:12Z
dc.date2025-01-26T22:46:12Z
dc.date.accessioned2026-06-27T04:09:38Z
dc.descriptionRice (Oryza sativa) plays a pivotal role in global food security. Understanding the genetics of rice cultivation is crucial, particularly for traits such as viviparous germination, which significantly influences germination and yield. Our research aimed to elucidate the genetic and molecular mechanisms by which the Sdr4 gene influences viviparous germination and to develop novel molecular markers for this gene to enhance breeding strategies against viviparous germination. In all, 683 rice cultivars and 100 F2 plants were used for viviparous germination and genetic analysis using KASP (Kompetitive Allele-Specific PCR) and agarose gel-based markers related to viviparous germination tolerance. We developed and used a polymorphic agarose gel-based marker and a KASP marker targeting the Sdr4 gene. A genetic analysis of field-grown rice cultivars and the F2 population revealed that the two markers on Sdr4 were functional for the genomic selection of SNPs and InDels related to dormancy. The Pearson correlation coefficient (r = 0.74, p-value = 3.31 × 10−8) between the Sdr4-IND KASP marker genotype and viviparous germination rate demonstrated a significant positive correlation, supporting the marker’s utility for selecting rice varieties with diminished viviparous germination. This insight serves as a critical theoretical foundation for breeding strategies for developing early-maturing rice varieties with enhanced resistance to viviparous germination, addressing pivotal challenges in rice cultivation, and ensuring food security.
dc.identifierhttps://hdl.handle.net/10568/170024
dc.identifier.urihttp://hdl.handle.net/123456789/23502
dc.languageen
dc.publisherMDPI
dc.rightsOpen Access
dc.sourceLee, So-Myeong, Youngho Kwon, Sung-Ryul Kim, Ju-Won Kang, Hyeonjin Park, Jin-Kyung Cha, Dong-Soo Park et al. "Development of Functional Molecular Markers for Viviparous Germination Resistance in Rice." Agronomy 14, no. 12 (2024): 2896.
dc.subjectfood security
dc.subjectbreeding programmes
dc.subjectyields
dc.subjectanalysis of variance
dc.subjectgermination
dc.subjectrice
dc.titleDevelopment of functional molecular markers for viviparous germination resistance in rice
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)