Identification and Evaluation of Resistance to Rice Blast in Oryza rufipogon Griff.in Hainan Province
In order to comprehensively evaluate and analyze the resistance of Hainan common wild rice to leaf blast and ear neck blast,2002 accessions collected from 11 different cities/counties in Hainan province were artificially inoculated with leaf blast at the seedling stage in the field for two consecutive years in 2022 and 2023.In addition,995 accessions that had been pumped were artificially inoculated for ear neck blast resistance.494(24.68％)were identified to be resistant to leaf blast,among which 7 were immune and 17 were highly resistant.In the field,1160(57.94％)were resistant to leaf blast,of which 24 were immune and 233 were highly resistant.Out of 995 accessions that were tested for ear neck plague,506 were resistant accounting for 50.85％,among which 23 were immune and 136 were highly resistant.The results showed that common wild rice accessions in Hainan were generally resistant to leaf blast or ear neck blast.The plant architecture in most of resistant germplasms was semi-erect or inclined,and a few showed upright or creeping.Accessions with high leaf distemper resistance were generally resistant to ear neck distemper after heading,and accessions with high immune or ear neck distemper resistance were generally resistant to leaf distemper.A total of 128 common wild rice materials with resistance to both leaf blast and ear neck blast were identified and evaluated.Collectively,this study provided a reference for the academic research and breeding utilization of rice blast resistance in Hainan wild rice.
Hainan common wild ricerice blastresistanceidentificationanalysis
NETL
NSTL
万方数据
维普
