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논문 기본 정보

자료유형
학술저널
저자정보
Ajithan Chandrasekaran (Chungnam National University) Eun-Ji Bae (National Institute of Forest Science) Young-Sun Kim (Daegu University) Geung-Joo Lee (Chungnam National University)
저널정보
한국잡초학회·한국잔디학회 Weed&Turfgrass Science Weed&Turfgrass Science Vol.13 No.4
발행연도
2024.12
수록면
265 - 278 (14page)

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초록· 키워드

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In this study, we focused on the genetic variation, structure, and hybridization patterns of different species of Zoysia grass found in the biogeographic regions of coastal South Korea. In total, we collected 170 samples from five Zoysia species (Zoysia japonica, Zoysia macrostachya, Zoysia sinica, Zoysia matrella, and Zoysia koreana) at five different locations. As outgroups for analysis, we obtained specimens of Zoysia tenuifolia collected abroad and Cynodon dactylon collected in Korea. Genetic variation among these samples was evaluated by performing amplified fragment length polymorphism (AFLP) marker analysis to confirm morphological identity, analysis of molecular variation (AMOVA), k-means clustering, and hybrid classification using a NewHybrids software. The AMOVA revealed that most of the genetic variations can be found among populations within localized areas, inferring that there is a high level of local diversity. On the basis of the selected hybridization model, Zoysia koreana was also found to show a high level of genetic diversity and hybrid characteristics, which be attributed to hybridization among Z. japonica, Z. sinica, or Z. matrella. Furthermore, application of the fixation index among populations using the permutation test (PhiPT) values and clustering analysis revealed significant species-specific genetic differentiation at the population level, as opposed to the regional level. A high genetic affinity between Z. koreana and other species would tend to indicate that this species serves as a genetic bridge for genetic transfer among the Zoysia species. Our findings in this study highlight the wide range of genetic diversity among Zoysia populations in Korea, indicating the role of hybridization in connecting genetically distant species within the Zoysia genus. These findings serve to emphasize the considerable genetic diversity within populations, a knowledge of which will contribute to enhancing efforts to conserve genetic resources in Korean coastal grasslands. Further studies on Zoysia evolution should include extensive genetic and geographical investigations to gain a more comprehensive understanding of the underlying evolutionary processes.

목차

Abstract
Introduction
Materials and methods
Results and discussion
Conclusion
References

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