| 王吉霞1,2;周益林1;段霞瑜1;王生荣2;王军平2;邱焯3.温度对小麦矮腥黑穗病菌冬孢子萌发的影响[J].植物保护,2006,32(1):38-40. |
| 温度对小麦矮腥黑穗病菌冬孢子萌发的影响 |
| Effects of temperature on germination of teliospore of dwarf bunt(Tilletia controversa Kühn) of wheat |
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| DOI： |
| 中文关键词: 植物病理学 小麦矮腥黑穗病菌 温度 冬孢子萌发 模型 |
| 英文关键词:phytopathology Tilletia controversa Kühn temperature teliospore germination model |
| 基金项目: |
| 王吉霞1 2;周益林1;段霞瑜1;王生荣2;王军平2;邱焯3 |
| 1.中国农业科学院植物保护研究所 植物病虫害生物学国家重点实验室 北京 100094;2.甘肃农业大学 兰州 730070;3.新疆维吾尔自治区农业厅麦类检疫工作站 伊宁835000 |
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| 中文摘要: |
| 温度对小麦矮腥黑穗病菌冬孢子萌发影响的试验结果表明,TCK冬孢子在-2～12℃范围内都可以萌发,5℃为最佳萌发温度。同一分离菌冬孢子在不同温度处理的萌发特性和萌发率有差异;不同分离菌冬孢子在相同温度下的萌发特性和萌发率有很大差异。在5℃下5个分离菌中,冬孢子萌发起始时间最短的为15 d,最长为35 d,培养60 d时分离菌Tt1、Tt2、Ty、Tm和Tu冬孢子的萌发率分别为86.4%、23.9%、23.3%、44.3%和81.0%。根据分离菌Tt2不同温度下培养50 d时的萌发率,建立了萌发率(Y)与温度(X)的模型为Y=0.150 8 exp[-0.02949(X-4.957 6)]2,此结果为TCK的风险评估提供了基础数据。 |
| 英文摘要: |
| The effects of temperatures on germination of teliospores of Tilletia controversa Kühn were investigated in laboratory.The results showed that teliospores of TCK could germinate at-2～12 ℃,and the optimum temperature for teliospore germination was 5 ℃.Germination characteristics of teliospores of same isolates at different temperatures and different isolates at the same temperature were both great different.The shortest initial germination time among five isolates Tt1,Tt2,Ty,Tm and Tu was 15 days,the longest was 35 days at 5 ℃ after incubation.The germination rates of Tt1,Tt2,Ty,Tm and Tu on day 60 after incubation were 86.4%,23.9%,23.3%,44.3% and 81.0%,respectively.Based on data of teliospore germination of Tt2 on day 50 after incubated,the model of relationship between teliospore germination rates(Y) and temperature(X) for Tt2 was constructed as Y=0.150 77exp(-(0.029 49)(X-4.957 6)2.These results of biological experiments will provide fundamental data for risk assessments of establishment of TCK in China. |
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