文献类型： 外文期刊

作者： Tang, Weijie ¹ ; Lin, Jing ¹ ; Wang, Yanping ¹ ; An, Hongzhou ⁴ ; Chen, Haiyuan ¹ ; Pan, Gen ⁵ ; Zhang, Suobing ¹ ; Guo, Baowei ² ; Yu, Kun ¹ ; Li, Huayong ¹ ; Fang, Xianwen ¹ ; Zhang, Yunhui ¹ ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Germplasm Resources & Biotechnol, Prov Key Lab Agrobiol, Nanjing, Peoples R China

2.Yangzhou Univ, Jiangsu Coinnovat Ctr Modern Prod Technol Grain C, Yangzhou, Jiangsu, Peoples R China

3.Yangzhou Univ, Agr Coll, Jiangsu Key Lab Crop Genet & Physiol, Yangzhou, Jiangsu, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Key Lab Crop Genet & Breeding Hebei Prov, Shijiazhuang, Hebei, Peoples R China

5.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha, Peoples R China

关键词： KASP; Rice; Variety identification; Marker-assisted breeding

期刊名称：RICE （ 影响因子：5.638； 五年影响因子：6.097 ）

ISSN： 1939-8425

年卷期： 2022 年 15 卷 1 期

页码：

收录情况： SCI

摘要： Background Breeding of conventional and hybrid rice (Oryza sativa L.) have solved hunger problems and increased farmers' income in the world. Molecular markers have been widely used in marker-assisted breeding and identification of larger numbers of different bred varieties in the past decades. The recently developed SNP markers are applied for more stable and detectable compared with other markers. But the cost of genotyping lots SNPs is high. So, it is essential to select less representative SNPs and inexpensive detecting methods to lower the cost and accelerate variety identification and breeding process. KASP (Kompetitive Allele-Specific PCR) is a flexible method to detect the SNPs, and large number of KASP markers have been widely used in variety identification and breeding. However, the ability of less KASP markers on massive variety identification and breeding remains unknown. Results Here, 48 KASP markers were selected from 378 markers to classify and analyze 518 varieties including conventional and hybrid rice. Through analyzing the population structure, the 48 markers could almost represent the 378 markers. In terms of variety identification, the 48 KASP markers had a 100% discrimination rate in 53 conventional indica varieties and 193 hybrid varieties, while they could distinguish 89.1% conventional japonica rice from different breeding institutes. Two more markers added would increase the ratio from 68.38 to 77.94%. Additionally, the 48 markers could be used for classification of subpopulations in the bred variety. Also, 8 markers had almost completely different genotypes between japonica and indica, and 3 markers were found to be very important for japonica hybrid rice. In hybrid varieties, the heterozygosity of chromosomes 3, 6 and 11 was relatively higher than others. Conclusions Our results showed that 48 KASP markers could be used to identify rice varieties, and the panel we tested could provide a database for breeders to identify new breeding lines. Also, the specific markers we found were useful for marker-assisted breeding in rice, including conventional and hybrid.