摘要
以Tetep、B4o为抗、感对照品种，在湖南省烟溪病区病圃，采用自然诱发，鉴定云南普通野生稻（oryzarufipogonGriff．）、疣粒野生稻（oryZameyerianaBaill．）、药用野生稻（oryzaofficinalisWall．）以及小粒野生稻对稻瘟病的抗性。结果表明：药用野生稻发病最早，叶瘟病级严重度达到7级，病斑孢子层组达5级；云南普通野生稻中，景洪普通野生稻病级严重度达7级，病斑孢子层级5级，元江普通野生稻病级严重度达8级，病斑孢子层级7级；疣粒野生猪发病最迟，病级发展缓慢，病级严重度为3级，病斑孢子层级1级。同田的小粒野生稻高抗稻瘟病。三种云南野生稻对稻瘟病的抗性评价为普通野生稻高感，药用野生稻感，而疣粒野生稻为中抗。
ln contrast with Tetep (resistant) and B4o(susceptible), the blast resistance of three Yunnan wild rices (oryzaoffcinalis Wall., oryza rufipogon Griff., and oryza meyeriana Baill. ) were identified. The results indicated that o.offcinalis was infected at first,and its leaf blast severities and spore layer scales of lesions at seedIing stage were 7 and 5grade, respectively. Jinhong common wild rice's were 8 and 7 grade, Yuanjiang common wild rice's were 9 and 7, respectively. o. meyeriana was infected late and scattered slowly, and at 3 and l grade, respectively. on the other hand, o. minuta resisted the blast in the same field. Thus,the blast resistance types of Yunnan wild rices were assessed as follow: o. rufipogonhighly susceptible ; o. officinalis susceptible, and o. meyeriana moderately resistant.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1999年第3期183-185,共3页
Chinese Journal of Rice Science
基金
国家自然科学基金
滇沪合作项目
关键词
野生稻
稻瘟病
抗性
评价
wild rice
rice blast
resistance
evaluation
