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| 玉米丝黑穗病菌冬孢子萌发湿度及云南玉米新品种抗性鉴定研究 | |
| 引用本文： | 吴景芝,魏永田,李自萍,何月秋.玉米丝黑穗病菌冬孢子萌发湿度及云南玉米新品种抗性鉴定研究[J].中国农学通报,2009,25(19):186-189. |
| 作者姓名： | 吴景芝 魏永田 李自萍 何月秋 |
| 作者单位： | 1. 云南农业大学教育部生物多样性与病虫害控制重点实验室,昆明,650201 2. 云南省施甸县植保植检站,云南施甸,678200 3. 云南农业大学教育部生物多样性与病虫害控制重点实验室,昆明,650201;云南农业大学农学与生物技术学院,昆明,650201 |
| 基金项目： | 云南省支撑计划项目"云南省玉米主要叶斑病监测及控制技术研究开发与应用" |
| 摘 要： | 在22℃和有萌发的玉米种子及土壤湿度为20％～25％条件下，有利于玉米丝黑穗病菌冬孢子萌发，但在无玉米种子时，则不能萌发。采用1%冬孢子制作的带菌土接种方法于2007年和2008年在两个病圃鉴定了云南省302份玉米新品种对丝黑穗病的抗性。结果表明，高抗、抗病、中抗、感和高感品种分别为65份，118份，27份，86份和6份，各占供试材料的21.45﹪，38.94﹪，8.91﹪，28.38﹪和1.98﹪。依据株发病率就是损失率的特点，建议在重病区，只宜推广抗病和高抗品种。 |
| 关 键 词： | 日粮纤维 日粮纤维 生长猪 消化率 消化道 消化酶 |
| 收稿时间： | 2009-01-04 |
| 修稿时间： | 2009-04-08 |
Effect of soil humidity on germination of Sphacelotheca reiliana teliospore and head smut resistance identification for new maize varieties in Yunnan Province |
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| Wu Jingzhi,Wei Yongtian,Li Ziping,He Yueqiu.Effect of soil humidity on germination of Sphacelotheca reiliana teliospore and head smut resistance identification for new maize varieties in Yunnan Province[J].Chinese Agricultural Science Bulletin,2009,25(19):186-189. | |
| Authors: | Wu Jingzhi Wei Yongtian Li Ziping He Yueqiu |
| Institution: | Wu Jingzhi, Wei Yongtian, Li Ziping, He Yueqiu ( 1Key Laboratory of Agricultural Biodiversity and Pests Control, Ministry of Education, Yunnan Agricultural University(Y A U), Kunming 650201; 2Shidian Station of Plant Protection and Quarantine, Shidian Yunnan 678200; 3 Faculty of Agronomy and Biotechnology, YA U, Kunming 650201 ) |
| Abstract: | Teliospores of Sphacelotheca reiliana could germinate very well at 22℃ and between 20％～25％soil humidity with germinating maize seed, however, they could not without the seed. In 2007 and 2008, 302 new maize varieties from Yunnan Province were identified for their head smut resistance by the inoculation with soil carrying 1% teliospore in two disease nurseries. Among them, 65, 118, 27, 86 and 6 varieties were highly resistant, resistant, moderately resistant, susceptible and highly susceptible to the disease with 21.45%, 38.94%, 8.91%, 28.38% and 1.98%, respectively. It was suggested that only should the resistant and highly resistant varieties be extended in severe disease areas based on the coincidence of incidence with loss rate. |
| Keywords: | maize head smut resistance identification |
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