Analysis of Rice Blast Resistance and Resistance Genes in Japonica Rice Germplasm Resources
Received date: 2021-11-03
Online published: 2022-03-17
In order to improve the breeding level of rice blast resistance in eastern Hebei Province, 157 japonica rice resources were identified by field-induced susceptibility for rice blast resistance, and 12 disease resistance gene markers were used for genotype identification. The results showed that among the 157 japonica rice resources, there were 2, 70, 64, 9 and 12 materials showing resistance, medium resistance, medium susceptibility, susceptibility, and high susceptibility, respectively. Among them, materials ZY1 and ZY2 showed disease resistance. The resistance genes Piz and Pid3 had the highest frequency, while Pigm, Pia, Pita, Pik and Pi5 played the main role in the resistance of rice blast in eastern Hebei Province, and the more genes aggregated, the higher the resistance. Combining the agronomic traits and yield traits of germplasm resources, it is found that ZY2, ZY13, ZY15 and ZY21 are suitable as parents for rice blast resistance breeding.
Key words： rice; rice blast resistance evaluation; resistance genes
ZOU Tuo, GENG Leiyue, ZHANG Wei, DU Qi, MENG Lingqi, ZHANG Qixing . Analysis of Rice Blast Resistance and Resistance Genes in Japonica Rice Germplasm Resources[J]. China Rice, 2022 , 28(2) : 45 -50 . DOI: 10.3969/j.issn.1006-8082.2022.02.009
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