ArticleRice (New York, N.Y.)2012
Genetic structure of Thai rice and rice accessions obtained from the International Rice Research Institute.
Article in Rice (New York, N.Y.), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 59 citations in OpenAlex.
- Genetic variability, correlation and path coefficient analysis of phenotypic traits and genetic diversity of Aman rice landraces (Oryza sativa L.).Scientific reports · 2025Article
- Population Structure of Nation-Wide Rice in Thailand.Rice (New York, N.Y.) · 2021Article
- Genome-Wide Association Study of Local Thai Indica Rice Seedlings Exposed to Excessive Iron.Plants (Basel, Switzerland) · 2021Article
- Genetic Diversity of Landraces and Improved Varieties of Rice (Oryza sativa L.) in Taiwan.Rice (New York, N.Y.) · 2020Article
- Marker-assisted selection in rice breeding programs in Hokkaido.Breeding science · 2019Review
- Genotyping for Blast (International journal of genomics · 2019Article
- Variability Assessment of Aromatic Rice Germplasm by Pheno-Genomic traits and Population Structure Analysis.Scientific reports · 2018Article
- Morphological and molecular dissection of wild rices from eastern India suggests distinct speciation between O. rufipogon and O. nivara populations.Scientific reports · 2018Article
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- Diverse Rice Landraces of North-East India Enables the Identification of Novel Genetic Resources forFrontiers in plant science · 2017Article
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- Genetic characterization and population structure of Indian rice cultivars and wild genotypes using core set markers.3 Biotech · 2016Article
- Multi-platform metabolomics analyses of a broad collection of fragrant and non-fragrant rice varieties reveals the high complexity of grain quality characteristics.Metabolomics : Official journal of the Metabolomic Society · 2016Article
- Analysis of Population Structure and Genetic Diversity in Rice Germplasm Using SSR Markers: An Initiative Towards Association Mapping of Agronomic Traits in Oryza Sativa.Rice (New York, N.Y.) · 2015Article
- Article
- Historical changes in population structure during rice breeding programs in the northern limits of rice cultivation.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2014Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAlthough the genetic structure of rice germplasm has been characterized worldwide, few studies investigated germplasm from Thailand, the world's largest exporter of rice. Thailand and the International Rice Research Institute (IRRI) have diverse collections of rice germplasm, which could be used to develop breeding lines with desirable traits. This study aimed to investigate the level of genetic diversity and structures of Thai and selected IRRI germplasm. Understanding the genetic structure and relationships among these germplasm will be useful for parent selection used in rice breeding programs.
resultsFrom the 98 InDel markers tested for single copy and polymorphism, 19 markers were used to evaluate 43 Thai and 57 IRRI germplasm, including improved cultivars, breeding lines, landraces, and 5 other Oryza species. The Thai accessions were selected from all rice ecologies such as irrigated, deep water, upland, and rainfed lowland ecosystems. The IRRI accessions were groups of germplasm having agronomic desirable traits, including temperature-sensitive genetic male sterility (TGMS), new plant type, early flowering, and biotic and abiotic stress resistances. Most of the InDel markers were genes with diverse functions. These markers produced the total of 127 alleles for all loci, with a mean of 6.68 alleles per locus, and a mean Polymorphic Information Content (PIC) of 0.440. Genetic diversity of Thai rice were 0.3665, 0.4479 and 0.3972 for improved cultivars, breeding lines, and landraces, respectively, while genetic diversity of IRRI improved and breeding lines were 0.3272 and 0.2970, respectively. Cluster, structure, and differentiation analyses showed six distinct groups: japonica, TGMS, deep-water, IRRI germplasm, Thai landraces and breeding lines, and other Oryza species.
conclusionsThai and IRRI germplasm were significantly different. Thus, they can be used to broaden the genetic base and trait improvements. Cluster, structure, and differentiation analyses showed concordant results having six distinct groups, in agreement with their development, and ecologies.
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