| 紫花苜蓿白粉病病原鉴定 |
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| 引用本文： | 李敏权,张自和,柴兆祥,李金花,骆惠生.紫花苜蓿白粉病病原鉴定[J].甘肃农业大学学报,2002,37(3):303-306,328. |
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| 作者姓名： | 李敏权 张自和 柴兆祥 李金花 骆惠生 |
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| 作者单位： | 1. 甘肃农业大学植保系,兰州,730070
2. 甘肃草原生态研究所,兰州,730030 |
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| 基金项目： | 科技部“西部大开发黄土高原退耕还草与草产业化技术研究与示范”，甘肃省农委“黄土高原集约化种植模式研究与推广”。 |
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| 摘 要： | 通过对甘肃定西县一年生紫花苜蓿白粉病蜡叶标本上的白粉菌的显微观察和计测,该菌闭囊壳直径85.5～128.3 m,平均直径95.7 m。每个子囊壳附属丝平均数量为27条,多数为20～30条。每个子囊壳含子囊6～8个,多数为6个,子囊大小为85.5m32.1 m。子囊内有子囊孢子2～4个,绝大多数为2个。167个子囊孢子计测结果,大小为32.1～21.4 m。附属丝褐色,多数基生,少数侧生,菌丝状,长度为子囊壳直径的0.6～1.6倍。经鉴定苜蓿上的白粉菌为蓼白粉菌(Erysiphe polygoni DC.)
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| 关 键 词： | 苜蓿 白粉病 蓼白粉菌 |
| 文章编号： | 1003-4315(2002)03-0303-04 |
Identification of pathogen on Alfalfa powdery mildew |
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| LI Min-quan,ZHANG Zi-he,CHAI Zhao-xiang,LI Jin-hua,LUO Hui-sheng.Identification of pathogen on Alfalfa powdery mildew[J].Journal of Gansu Agricultural University,2002,37(3):303-306,328. |
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| Authors: | LI Min-quan ZHANG Zi-he CHAI Zhao-xiang LI Jin-hua LUO Hui-sheng |
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| Institution: | LI Min-quan1,ZHANG Zi-he2,CHAI Zhao-xiang1,LI Jin-hua1,LUO Hui-sheng1 |
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| Abstract: | Studied on morphology of the causal agent of powdery mildew of Alfalfa from the herbaria specimen obtained Dingxi, China. The average diameter of 105 cleistothecia collected was 97.5 靘. The range was 85.5～128.3 靘. The average number of appendages was 27 per cleistothecium. Clastothecia contained five to eight , most commonly six asci. Asci averaging 32.1靘?5.5 靘 with a range of 21.4~42.8?4.1～106.2 靘 for the 97 asci measured The number of ascospores per ascus varied from two to four , and average dimensions of 167 ascospores were 10.7?2.1 靘 with a range of 10.7～20.4靘?1.4～42.8 靘. Appendages were hyaline, basal and a few lateral , straight to slightly cured with the mycelium , and half to one and half times as long as the diameter of the cleistothecium. This was just only Erysiphe polygoni DC. |
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| Keywords: | Medicago sativa powdery mildew Erysiphe polygoni |
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