InDel molecular marker realizing coseparation with rice xanthomonas oryzae resistant gene xa34(t) as well as detection primers and applications of InDel molecular marker
A technology of xa34-nv7indelrv and rice bacterial blight, applied in the field of agricultural biology, can solve the problems of low throughput, long time-consuming, expensive reagents, etc., and achieve the effects of high specificity, reduced pollution, and long detection time
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Embodiment 1
[0036] Example 1: Development of InDel molecular marker co-segregated with xa34(t) gene and verification of the marker in main rice varieties planted in South China and main rice bacterial blight resistant resource varieties.
[0037] (1) On the basis of the results of fine mapping of the xa34(t) gene, within the range between the RM10927 and BGID25 markers on chromosome 1, the resistant variety BG1222 of the xa34(t) gene and the susceptible control variety King Kong 30 Candidate gene sequencing analysis: RM10927 and BGID25 markers correspond to the physical location of the reference genome of indica rice variety Minghui 63 at Chr01:14750992..14920510, with an interval of 169.5kb, including 34 annotated genes. Candidate genes near the co-segregated markers BGID36 and BGID34 in this region were preferentially selected for sequencing analysis.
[0038] (2) Use the candidate gene sequence obtained in step (1) to perform nucleotide sequence alignment through the sequence compariso...
Embodiment 2
[0080] Example 2: Hybridization of F using King Kong 30 / BG1222 2 Genetic and disease resistance phenotype verification of xa34-nv7InDel molecular marker in population
[0081] (1)F 2 Segregation population construction: F 1 Generation; F 1 F 2 generational segregation groups.
[0082] (2)F 2 About 100 strains were cultivated on a single plant in the paddy field, and the "leaf-cutting method" was used to inoculate Xanthobacterium oryzae V-type bacteria (strain number 5226) at the booting stage. The published literature is: "Chen et al., 2011. Genetic analysis and molecular mapping of a novel recessive gene xa34(t) for resistance against Xanthomonasoryzae pv. Oryzae. Theor Appl Genet, 122:1331-1338.") for identification of disease resistance phenotypes. Carry out disease resistance phenotype investigation 21 days after inoculation, investigate and evaluate resistance with reference to the method of International Rice Institute INGER (can refer to " INGERGenetic Resources C...
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