Synthetical Evaluation on the Qualitative and Quantitative Resistance of Rice Germplasms to Magnaporthe oryzae

作     者：Jinqi FENG Kailing CHEN Aiqing FENG Jianyuan YANG Wenjuan WANG Xiaoyuan ZHU Jing SU 

作者机构：Plant Protection Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of High Technology for Plant ProtectionGuangzhou 510640China 

出 版 物：《Agricultural Biotechnology》 (农业生物技术（英文版）)

年 卷 期：2023年第12卷第3期

页      面：6-10页

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Supported by Science and Technology Plan Project of Shaoguan(210804164531395) Special Fund for Modern Agricultural Industry Technology System(CARS-01-32,2022KJ105) "14thFive-Year Plan"New Discipline Team Building Project of Guangdong Academy of Agricultural Sciences(202116TD) 

主　　题：Rice germplasm Magnaporthe oryzae Resistance 

摘      要：[Objectives]This study was conducted to screen out rice resources resistant to rice blast(Magnaporthe oryzae).[Methods]The qualitative and quantitative resistance of 1659 rice resources from 45 countries and regions to rice blast were evaluated by disease nursery in upland condition and the test of the spectrum to rice blast isolates.[Results]There were 292 entries which accounted for 17.6%showed high blast resistance(0 and 1 disease scale),68 entries(counted for 4.1%)showed resistance to blast(3 disease scale);and the number of the entries showed intermediate resistance,intermediate susceptible and susceptible were 208(with the corresponding percentage of 12.5%),471(28.4%),620(37.4%)*** the tested entries,27 entries including BG1222,BL122,BTX,IR37704-131-2-3-2,and LEBONNET had showed broad-spectrum blast resistance with the resistance frequency of higher than 90%,Quantitative resistance evaluation was conducted on some key resources,and 14 entries,of which are BR27,DRAGO,IR100,QINLIUAI、SERIBU GANTANG,YUEXIANGZHAN and so on,showed good quantitative resistances,and 8 entries had higher quantitative resistances than IR36.[Conclusions]This study provides important blast resistance resources for the local rice breeding program and has a significant value for the discovery of new blast resistance genes and its application in the blast resistance breeding.