Yao Wan ^1,2 , Dengjie Luo ^1,2 , Shenxian He ^1,2 , Xuemei Qin ^1,2 , Rongbai Li ^1,2 , Fang  Liu ^1,2

1 College of Agricultural, Guangxi University, Nanning, 530005, P.R. China
2 State Key Laboratory for Protection and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, P.R. China
Author    Correspondence author
Rice Genomics and Genetics, 2022, Vol. 13, No. 7   doi: 10.5376/rgg.2022.12.0007
Received: 28 Oct., 2022    Accepted: 05 Nov., 2022    Published: 15 Nov., 2022

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Wan Y., Luo D.J., He S.X., Qin X.M., Li R.B., and Liu F., 2022, Mapping of bacterial leaf streak resistance genes in rice, Rice Genomics and Genetics, 12(7): 1-8 (doi:10.5376/rgg.2022.12.0007)

Rice bacterial leaf streak (BLS) is one of the main rice diseases. To exploit major resistance genes/quantitative trait loci (QTLs) of rice to BLS, and provide a basis for enriching rice disease resistant gene resources and breeding resistant cultivars. The F2 mapping population was constructed by using a cultivated rice line 'HD10' which was highly resistance to BLS and stable resistance at multiple growth stages and an Indica rice variety '9311' which was high susceptible to BLS in the whole growth period as parents. Bulked segregant analysis and SSR/InDel molecular markers were used to map the resistance loci at seedling and tillering stage. The molecular markers B03021 and B03045 were polymorphic between parents and resistant/susceptible genes pools at seedling stage and tillering stage. The resistance loci were initially located in the 7 cM region between the molecular markers B03021 and B03029 on chromosome 2. The phenotypic contribution rates were 13.1 % and 17.5 %, respectively. Indicating that 'HD10' carries a major resistance QTL in this interval on chromosome 2. This QTL has a larger effect value, which should be further explored.

Rice; Bacterial leaf streak; Disease resistance; QTL mapping