| 水稻抗稻瘟病鉴定中的几个相关问题的探讨 |
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| 引用本文： | 何月秋,唐文华.水稻抗稻瘟病鉴定中的几个相关问题的探讨[J].云南农业大学学报,2003,18(3):234-238. |
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| 作者姓名： | 何月秋 唐文华 |
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| 作者单位： | [1]云南农业大学植物保护学院，云南昆明650201 [2]国际水稻研究所昆虫与植病系，菲律宾马尼拉市7777 [3]中国农业大学植物病理系，北京100094 |
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| 基金项目： | 国际水稻所生物多样性控制稻瘟病项目，国家863项目(2001AA211061,2002AA241311)，云南省后备人才基金项目(99C10010R)。 |
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| 摘 要： | 利用CO39近等基因系及其累加系和4个稻瘟病菌的原始菌株及其突变体,研究稻瘟病抗性鉴定中经常考虑的几个因子。结果表明,接种孢子量与植株的病级、病斑数和发病叶面积呈正相关,品种对混合菌株接种的抗病性主要取决于致病性强的菌株,弱菌株的诱导抗性有限,过量施用氮肥可使部分抗病品种感病,被克服的主效基因没有明显的残效抗性。
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| 关 键 词： | 稻瘟病 抗性鉴定 近等基因系 氮肥 |
| 文章编号： | 1004-390X(2003)03-0234-05 |
| 收稿时间： | 2002-11-25 |
Some Issues on Identification of Rice Blast Resistance |
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| Hei Leung,Robert S.Zeigler.Some Issues on Identification of Rice Blast Resistance[J].Journal of Yunnan Agricultural University,2003,18(3):234-238. |
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| Authors: | Hei Leung Robert SZeigler |
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| Institution: | (1.Plant Protection College, Yunnan Agricultural University, Kunming 650201, China;2.Entomology &; Plant Pathology Division, International Rice Research Institute, DAPO Box 7777, Metro Manila,Philippines;3.Plant Pathology Department, China Agricultural University, Beijing 100094, China) |
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| Abstract: | Some issues on identification of rice blast resistance were studied by using CO39 near-isogenic and pyramid lines and 4 original isolates and their mutants of Magnaporthe grisea. The results were very useful to blast resistance breeding: that spore number for inoculation was significantly positive correlated to score, lesion number and diseased leaf area, resistance of a line to mixed spore suspension depended on the compatible isolate and induced resistance by incompatible isolate was very limited, much nitrogen application made resistant line susceptible and residual resistance did not appear among the defeated major resistance genes. |
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| Keywords: | rice blast resistance identification near-isogenic line nitrogen fertilizer |
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