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- Title
粳稻种质资源苗期耐盐相关性状的SSR标记关联分析.
- Authors
谢菲菲; 田普江; 马帅国; 白天亮; 陈静茹; 张 倩; 田蓉蓉; 杨治伟; 田 蕾; 李培富
- Abstract
In order to provide excellent intermediate materials and technical support for the breeding of salt-tolerant rice varieties, thirty-eight pairs of simple sequence repeat (SSR) markers which were uniformly distributed throughout rice genome were used to detect 160 japonica rice germplasm resources, and the molecular marker sites associated with salt-tolerant traits were explored. The results showed that there was certain correlation among salt-tolerant traits. Salt tolerant score was significantly positively correlated with relative plant height, relative shoot fresh weight, relative root fresh weight and relative stem diameter. Salt tolerant score was significantly negatively correlated with leaf damage percentage and relative ratio of root to shoot. A total of 192 alleles were identified at all of 38 SSR loci, the effective alleles number was 109.60,and the effective alleles number per marker locus was 2.88. The average values of Shannon’s information index and Nei’s genetic diversity index of these SSR markers were 1.139 4 and 0.586 9, respectively. Eleven sites were significantly associated with salt tolerance related traits, which were located on chromosomes 1,3,4,7,8,9,10,11 and 12, and explained the phenotypic variance from 4.10% to 18.85%. RM286-7 that was related with relative shoot fresh weight had the highest phenotypic contribution rate, and RM7585-1 had the highest positive phenotypic effect for salt tolerant score, whose phenotypic contribution rate was 6.80%, and the carrier variety was Bertone.
- Subjects
MICROSATELLITE repeats; GERMPLASM; RICE breeding; CHROMOSOMES; ALLELES; SALT
- Publication
Journal of Henan Agricultural Sciences, 2019, Vol 48, Issue 10, p13
- ISSN
1004-3268
- Publication type
Article
- DOI
10.159338/j.cnki.1004-3268.2019.10.003