CAJ | 학술논문

甘薯瘟田间自然诱发病圃法是目前自然接种类应用最广的方法，成本低、操作简便。国家甘薯产业体系“薯瘟病综合防治试验示范基地”代表性好、菌系单一，年度鉴定结果稳定可靠。2010-2012年对572份不同来源的甘薯品种进行抗瘟鉴定，结果表明参试品种除2010年鉴定出高抗（ HR）水平的品系外，2011-2012年均未鉴定出高抗品系，抗病至高感材料在3年的连续鉴定中均有出现；其中对照品种新种花连续3年鉴定结果均为高感（ HS），金山57在2010-2012的3年中分别表现为中抗（ MR）、高感（ HS）和感病（ S），湘薯75-55在2010-2011年表现为抗病（ R），2012年表现为中抗（ MR）；对照品种鉴定结果相对稳定，说明该病圃作为抗性筛选基地对甘薯后代品系进行抗瘟筛选有益于降低抗病育种的盲目性和年限；同时以3个对照品种在病圃中设置一定的试验区，鉴定后根据其病情数据开展系统聚类分析，发现试验区块中的对照品种发病相对稳定，但不同区块发病略有不同，尚待采取合理措施优化病圃内菌落分布，提高其可靠性和稳定性。
감서온전간자연유발병포법시목전자연접충류응용최엄적방법，성본저、조작간편。국가감서산업체계“서온병종합방치시험시범기지”대표성호、균계단일，년도감정결과은정가고。2010-2012년대572빈불동래원적감서품충진행항온감정，결과표명삼시품충제2010년감정출고항（ HR）수평적품계외，2011-2012년균미감정출고항품계，항병지고감재료재3년적련속감정중균유출현；기중대조품충신충화련속3년감정결과균위고감（ HS），금산57재2010-2012적3년중분별표현위중항（ MR）、고감（ HS）화감병（ S），상서75-55재2010-2011년표현위항병（ R），2012년표현위중항（ MR）；대조품충감정결과상대은정，설명해병포작위항성사선기지대감서후대품계진행항온사선유익우강저항병육충적맹목성화년한；동시이3개대조품충재병포중설치일정적시험구，감정후근거기병정수거개전계통취류분석，발현시험구괴중적대조품충발병상대은정，단불동구괴발병략유불동，상대채취합리조시우화병포내균락분포，제고기가고성화은정성。
The resistance evaluation of sweetpotato varieties by natural Ralstonia solanarum nursery ( NRSN) is the most generally used inoculation method of easier operation,bigger capacity and reliable identifi-cation results.The NRSN located in Dayang Village,Dieshi Township,Fuding City is very suitable for nursery tests.NRSN method is an effective and prior way to get fine qulity and highly resistant germplasm.572 cultivated sweetpotato materials were tesed in this natural nursery in 2010-2012.Three check varieties were also tested in the field.The results showed except for those identified in 2010 no HR varieties were identified in 2011-2012;the results of identification for three years in succession showed that from R varieties to HS varieties appeared in this period.Meanwhile the check variety Xinzhonghua showed HS in all the three years,and Jinshan57 suc-cessively showed MR,HS and S;Xiangshu75-55 showed R in 2010-2011,and showed MR in 2012.The iden-tification results were relatively stable for the check cultivar.In the same time cluster analysis was used to eval-uate the NRSN with the disease data of the check varieties.The results showed that there was some diversity in different areas in the NRSN,reasonable measures should be taken to optimize the distribution of the pathogen communities in the NRSN to promote the reliability of the method.