Genetic diversity analysis based on ISSR molecular markers in Spathiphyllum
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摘要:
目的 探讨白鹤芋种质资源的亲缘关系及遗传多样性,为其开发、利用与保护提供理论依据。 方法 利用ISSR分子标记技术对14份栽培品种、7份杂种品系共21份白鹤芋种质资源的亲缘关系及遗传多样性进行分析。 结果 采用9条扩增清晰、多态性较好的ISSR引物对21份种质进行PCR扩增,共扩增出133个位点,其中多态性位点有120个,多态性比率(PPB)为90.23%;NTsys聚类分析表明14份栽培品种在相似系数为0.6692处可分为3组,7份杂交品系在相似系数为0.6700处可分为2组;应用TBtools相关性、主成分分析,在第一主坐标上14份栽培品种被分为2组,聚类分析结果准确。 结论 ISSR分子标记技术可有效揭示白鹤芋种质资源的遗传多样性和品种间的亲缘关系;ISSR聚类结果与白鹤芋的种质来源、佛焰苞花序性状等吻合度较高;主成分分析印证聚类结果的同时,更直观显示出种质间的亲缘关系。 Abstract:Objective In order to provide theoretical basis for the development, utilization and protection of Spathiphyllum germplasm resources, the genetic diversity and relationship of germplasm resources were discussed. Method ISSR markers were used to analyze the genetic relationship and genetic diversity of 21 Spathiphyllum germplasm resources from 14 cultivars and 7 hybrid strains. Result Nine clearly amplified and highly polymorphic ISSR primers were used for PCR amplification of 21 germplasm. A total of 133 loci were amplified, including 120 polymorphic loci, and the polymorphism ratio (PPB) was 90.23%. According to NTsys cluster analysis, the 14 cultivars could be divided into three groups at the similarity coefficient of 0.6692. The 7 hybrid strains could be divided into two groups at the similarity coefficient of 0.6700. Using TBtools correlation and principal component analysis, 14 cultivars were divided into two groups on the first principal coordinate, which proved the accuracy of cluster analysis results. Conclusion ISSR molecular markers could effectively reveal the genetic diversity and the genetic relationship between cultivars; the genetic diversity of the spathiphyllum is abundant. ISSR clustering results were in good agreement with the germplasm origin and the character of spathes; principal component analysis confirmed the clustering results and showed the genetic relationship between varieties more directly. -
Key words:
- Spathiphyllum /
- germplasm resources /
- ISSR marker /
- genetic diversity
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表 1 供试白鹤芋信息
Table 1. Spathiphyllum information of participants in the trial
序号
Number代号
Code number名称
Name来源
Source类型
Types植株紧凑性
Plant compactness肉质花序颜色
Fleshy
inflorescence
color肉质花序凸起
Convex appearance
of fleshy
inflorescence1 SPAT01 娇小白掌
Spathiphyllum 'Petite'中国广东
Guangdong,China栽培种
Cultivar高
High浅黄
Slight yellow明显
Clear2 SPAT10 超级较小白掌
Spathiphyllum 'Super Petite'美国
America栽培种
Cultivar中等
Middle乳黄
Yellow明显
Clear3 SPAT24 小巨人
Spathiphyllum 'Dwarf Sensation'中国广东
Guangdong,China栽培种
Cultivar中等
Middle浅黄
Slight yellow明显
Clear4 SPAT29 科丽丝
Spathiphyllum 'Chris'中国福建
Fujian,China栽培种
Cultivar高
High乳黄
Yellow极明显
Very clear5 SPAT30 美酒
Spathiphyllum ‘Mojo'中国福建
Fujian,China栽培种
Cultivar高
High浅黄
Slight yellow极明显
Very clear6 SPAT33 克劳迪娅
Spathiphyllum 'Claudia'美国
America栽培种
Cultivar高
High浅黄
Slight yellow极明显
Very clear7 SPAT34 维客
Spathiphyllum ‘Vickily'中国福建
Fujian,China栽培种
Cultivar高
High乳黄
Yellow极明显
Very clear8 SPAT37 — 澳洲
Australia栽培种
Cultivar中等
Middle浅黄
Slight yellow明显
Clear9 SPAT38 — 中国福建
Fujian,China栽培种
Cultivar高
High浅黄
Slight yellow不明显
Not clear10 SPAT50 阳光之梦
Sunshine dreamSPAT12×SPAT03杂交种
Hybrid of SPAT12×SPAT03杂交种
Hybrid高
High米白White 极明显
Very clear11 SPAT51 阳光之恋
Sunshine loveSPAT12×SPAT14杂交种
Hybrid of SPAT12×SPAT14杂交种
Hybrid高
High米白
White极明显
Very clear12 SPAT52 阳光之星
Sunshine starSPAT18×SPAT12杂交种
Hybrid of SPAT18×SPAT12杂交种
Hybrid高
High米白
White明显
Clear13 SPAT53 阳光明珠
Sunshine pearlSPAT10×SPAT12杂交种
Hybrid of SPAT10×SPAT12杂交种
Hybrid中等
Middle米白
White明显
Clear14 SPAT70 — SPAT36×SPAT51杂交种
Hybrid of SPAT36×SPAT51杂交种
Hybrid中等
Middle米白
White不明显
Not clear15 Z1 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain中等
Middle浅黄
Slight yellow极明显
Very clear16 Z2 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain高
High米白/绿色
White/Green明显
Clear17 Z3 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain高
High米白
White明显
Clear18 Z4 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain中等
Middle米白/绿色
White/Green不明显
Not clear19 Z5 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain高
High绿色
Green明显
Clear20 Z6 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain高
High绿色
Green不明显
Not clear21 Z7 — SPAT33×SPAT51杂交种
Hybrid of SPAT33×SPAT51杂交品系
Hybrid strain高
High绿色
Green极明显
Very clear表 2 筛选出的9条引物信息
Table 2. Information of nine selected primers
引物名称
Primer name序列(5′—3′)
Sequence (5′—3′)Tm值
Melting
temperature/℃最佳退火温度
Annealing
temperature/℃UBC-866 CTCCTCCTCCTCCTCCTC 59.5 62.5 UBC-873 GACAGACAGACAGACA 49.2 44.9 UBC-876 GATAGATAGACAGACA 44.0 40.8 UBC-879 CTTCACTTCACTTCA 43.0 38.0 UBC-881 GGGTGGGGTGGGGTG 59.4 58.2 UBC-892 TAGATCTGATATCTGAATTCCC 52.1 47.1 UBC-895 AGAGTTGGTAGCTCTTGATC 53.4 49.1 UBC-899 CATGGTGTTGGTCATTGTTCCA 55.8 52.7 UBC-900 ACTTCCCCACAGGTTAACACA 55.6 52.5 表 3 9条引物多态性信息
Table 3. Polymorphism information of 9 primers
引物编号
Primer
number条带数
Number of
binds/条多态性条带数
Number of
polymorphic
bands/条多态条带百分率
Percentage of
polymorphic
bands/%多态信息含量
Polymorphism
information
contentUBC-866 11 9 81.82 0.835 UBC-873 15 13 86.67 0.905 UBC-876 8 7 87.50 0.827 UBC-879 15 12 80.00 0.908 UBC-881 14 13 92.86 0.893 UBC-892 16 16 100.00 0.902 UBC-895 16 14 87.50 0.908 UBC-899 18 16 88.89 0.909 UBC-900 20 20 100.00 0.938 总计 Total 133 120 90.23 — -
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