文献类型： 外文期刊
作者： Ye, Yuanjun 1 ; Fu, Haiping 3 ; Zhou, Yiwei 1 ; Zhang, Shanxin 3 ; Wang, Zehuang 4 ; Tian, Lihua 4 ; Tan, Jianjun 1 ; Zhu, Genfa 1 ; Liu, Jinmei 1 ; Xu, Yechun 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Environm Hort Res Inst, Guangdong Prov Key Lab Ornamental Plant Germplasm, Guangzhou 510640, Peoples R China
2.Minist Agr, Key Lab Urban Agr South China, Guangzhou 510640, Peoples R China
3.Dongguan Agr Sci Res Ctr, Dongguan 523083, Peoples R China
4.Jiangmen Agr Sci & Technol Innovat Ctr, Jiangmen 529000, Peoples R China
关键词： Caladium; EST-SSR markers; cumulative identity probability; core collection; molecular fingerprint
期刊名称：AGRICULTURE-BASEL （ 影响因子：3.6； 五年影响因子：3.6 ）
ISSN：
年卷期： 2023 年 13 卷 1 期
页码：
收录情况： SCI
摘要： Caladiums are promising colorful foliage plants due to their unique leaf shapes and dazzling colors. Until now, over 2000 varieties of Caladium have been cultivated worldwide. The long-term natural variation and artificial selection have enriched the germplasm resources of Caladium in the market, yet have blurred its genetic background. In this study, 16 informative EST-SSR markers were used to screen 144 Caladium accessions, indicating that 16 EST-SSRs could distinguish all genotypes with a minimum cumulative identity probability (PI) of 2.0 2 x 10(-15). Using the simulated annealing method, the richest genetic information was acquired at the same compression ratio. A final core of 44 accessions was selected, comprising 30.6% of the individuals and retraining more than 95% of the total genetic information. No significant differences were observed in allele frequency distributions or genetic diversity parameters between the core collection and the entire population. Cluster analysis roughly divided the core collections into four populations, where 66.7% of the private alleles were detected in Pop2. Finally, DNA molecular fingerprints of 44 core accessions were established, including barcodes and quick response (QR) code molecular identities (ID). The results will lay a theoretical foundation for identifying, preserving, and utilizing Caladium germplasm resources.
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