CAJ | 학술논문

通过对61份玉米自交系大斑病和普通锈病的自然发病调查，以综合指数为依据，采用群体逐级分类法进行抗性分级。结果表明，对大斑病表现抗病和免疫的自交系分别有7份和8份，分别占供试材料的11.48%和13.11%；对锈病表现抗病和高抗(或免疫)的自交系分别有10份和6份，分别占供试材料的16.39%和9.84%，是西昌地区配制抗病杂交组合的适宜亲本。少数新选系对大斑病和锈病抗性表现较好，表明从西南高原玉米地方品种中选育优良抗病材料是可行的。高感和高抗型自交系也可作为玉米大斑病和普通锈病抗性机理研究的理想材料。
통과대61빈옥미자교계대반병화보통수병적자연발병조사，이종합지수위의거，채용군체축급분류법진행항성분급。결과표명，대대반병표현항병화면역적자교계분별유7빈화8빈，분별점공시재료적11.48%화13.11%；대수병표현항병화고항(혹면역)적자교계분별유10빈화6빈，분별점공시재료적16.39%화9.84%，시서창지구배제항병잡교조합적괄의친본。소수신선계대대반병화수병항성표현교호，표명종서남고원옥미지방품충중선육우량항병재료시가행적。고감화고항형자교계야가작위옥미대반병화보통수병항성궤리연구적이상재료。
The northern leaf blight(NLB) and common rust(CR) of 61 corn inbred lines were surveyed in natural field conditions, resistance degrees were divided by population gradually classification method based on a comprehen-sive index.The results showed that 11.48%of 61 inbred lines were resistant to NLB, 13.11%were immune, 16.39%inbred lines were resistant to CR, and 9.84%were highly resistant or immune. These resistant lines were probably the suitable parents for cultivars breeding in Xichang region. Some new inbred lines were immune, highly resistant or re-sistant to the northern leaf blight and common rust,which indicated it's hopeful to select excellent resistant lines from Southwest maize landrace growing at high altitude. These lines highly susceptible or highly resistant in this study would be ideal for NLB or CR resistance mechanism research.