CAJ | 학술논문

[目的]对采自海南黎安港的3种水鳖科海草—海菖蒲（Enhalus acoroides）、泰来藻（Thalassia hemprichii）和小喜盐草（Halophila minor）的染色体及其核型进行研究。[方法]采用海菖蒲和泰来藻的根尖及小喜盐草的腋芽为材料,采用常规压片法制备染色体玻片标本,并对其进行核型分析。[结果]海菖蒲和泰来藻的染色体数目为 2n=18,小喜盐草的染色体数目为2n=28,两者均未发现B染色体和随体;海菖蒲、泰来藻和小喜盐草的核型公式分别为K（2n）=18=12m＋6sm,K（2n）=18=12m＋6sm,K（2n）=28=16m＋8sm＋4st;按Stebbins的核型分类标准,海菖蒲和泰来藻的染色体属2A类型,小喜盐草为2B型。[结论]通过对3种海草核型进行比较发现,海菖蒲与泰来藻的核型差距很小,而它们与小喜盐草的核型差距较大,说明海菖蒲与泰来藻的亲缘关系更近。
[목적]대채자해남려안항적3충수별과해초—해창포（Enhalus acoroides）、태래조（Thalassia hemprichii）화소희염초（Halophila minor）적염색체급기핵형진행연구。[방법]채용해창포화태래조적근첨급소희염초적액아위재료,채용상규압편법제비염색체파편표본,병대기진행핵형분석。[결과]해창포화태래조적염색체수목위 2n=18,소희염초적염색체수목위2n=28,량자균미발현B염색체화수체;해창포、태래조화소희염초적핵형공식분별위K（2n）=18=12m＋6sm,K（2n）=18=12m＋6sm,K（2n）=28=16m＋8sm＋4st;안Stebbins적핵형분류표준,해창포화태래조적염색체속2A류형,소희염초위2B형。[결론]통과대3충해초핵형진행비교발현,해창포여태래조적핵형차거흔소,이타문여소희염초적핵형차거교대,설명해창포여태래조적친연관계경근。
[Objective] This study aimed to investigate the chromosomes and karyotypes of three seagrass species of hydrocharitaceae-Enhalus acoroides, Thalassia hemprichii and Halophila minor collected from Li’an Lagoon, Hainan Province, China. [Method] The root-tips of E. acoroides, T. hemprichii and the axillary buds of H. minor were selected as the materials in this study. The conventional crushing method was used to prepare the slice specimens of chromosomes, and the karyotypes of the three species were analyzed. [Result] The chromosome numbers of E. acoroides, T. hemprichii and H. minor were 2n=18, 18, 28, respectively. The karyotype formulas were K （2n）=18= 12m＋6sm, K（2n）=18=12m＋6sm and K（2n）=28=16m＋8sm＋4st, respectively. According to the standard of Stebbins, the karyotypes of E. acoroides and T. hemprichii were 2A, and that of H. minor was 2B. There was no B chromosome and satellite in these three species. [Conclusion] According to the comparison on the karyotypes of this three species, E. acoroides and T. hemprichii are similar in karyotypes to each other, indicating that there is close, inter-relationship between E. acoroides and T. hemprichii.