PDF
Full
Outline
To establish a molecular identification system and DNA fingerprint database for hulless barley (Hordeum vulgare L. var. nudum Hook. f.) varieties in China, this study aimed to screen a set of SSR core primers suitable for national variety identification standards, thereby providing technical support for variety authentication, management, and new variety protection. Based on previously reported SSR markers of hulless barley, PCR amplification, marker screening, and validation were performed across diverse varieties, followed by analyses of genetic diversity and discrimination efficiency. Using 155 hulless barley accessions, 200 SSR primer pairs were subjected to polymorphism screening. Twenty-one core primers were selected based on criteria including clear and easily interpretable peak patterns, high polymorphism (mean PIC=0.68), amplification stability, and even chromosomal distribution. Reference varieties (e.g., Yunqing 4, Diqing 4, and Kunlun 8) were employed to validate the stability and reliability of these primers. The constructed DNA fingerprint database for 155 accessions detected 137 alleles, ranging from 2 to 10 per locus (mean=6.52). The polymorphism information content (PIC) values varied between 0.39 and 0.85 (mean=0.68), with 95.24% of loci classified as highly polymorphic (PIC>0.5). These 21 primers achieved a discrimination efficiency of 99.991%, distinguishing 153 out of 155 accessions. Cluster analysis, population structure analysis, and principal component analysis classified the 154 accessions into three distinct groups, revealing rich genetic diversity and simple genetic backgrounds in 45.81% of the accessions. The SSR-based identification system developed in this study demonstrated high accuracy and practical applicability, enabling authenticity verification, auxiliary screening of approximate varieties in DUS testing, and intellectual property protection. Furthermore, the DNA fingerprint database and genetic diversity analysis provide valuable molecular-level insights for future hulless barley breeding programs.
PDF
22
8
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
