Occurrence and Development of the Cereal Cyst Nematode (Heterodera avenae) in Shandong, China.
Occurrence and Development of the Cereal Cyst Nematode (Heterodera avenae) in Shandong, China.
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DOI：
10.1094/pdis-08-13-0830-re
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发表时间：
2014-11
期刊：
影响因子：
4.5
通讯作者：
Hai-yan Wu;Qiong He;Jing Liu;Jian Luo;D. Peng
中科院分区：
文献类型：
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作者：
Hai-yan Wu;Qiong He;Jing Liu;Jian Luo;D. Peng
禾谷孢囊线虫（Heterodera aveane）在我国16个省（市、自治区、直辖市）均有分布，其中山东冬小麦产区的禾谷孢囊线虫（Heterodera aveane）分布最广。本研究对该虫的种群动态进行了研究。在田间连续两年对‘济麦22号’和‘台农18号’中的麦长管蚜进行了研究。在冬小麦生长季节采集土壤和根系样品，并对H。燕麦种群密度和生活阶段的测定。H.两个冬小麦品种根系和土壤中麦长管蚜种群动态在2年内基本一致。孕穗期（4月），土壤平均温度为11.8 ~ 14.4°C时，小麦根中二龄幼虫（J2）密度最大。在Zadoks（Z）47孕穗期后，随着新孢囊的形成，根际土壤中的孢囊数量显著增加。土壤中J2种群密度在Z23和Z30（分蘖期和茎伸长期）出现一个高峰，而在Z13（苗期）出现最低值。本研究提供了小麦冬休眠期后根系和土壤中J2种群数量增加的重要信息。了解不同生命阶段的H。对山东省冬小麦中麦长管蚜的研究将为制定综合防治措施提供有价值的参考。
The cereal cyst nematode (CCN), Heterodera aveane, has been found in 16 provinces of China, including the Shandong winter-wheat-growing region. This study investigated the population dynamics of H. avenae in the winter wheat 'Jimai 22' and 'Tainong 18' for two consecutive years in the field. Soil and root samples were collected during the winter-wheat-growing season and H. avenae population densities and life-stages determined. H. avenae population dynamics in roots and soil of the two winter wheat cultivars were similar over the 2-year period. Second-stage juvenile (J2) population densities in wheat roots were greatest during booting stage (April), when mean soil temperature was between 11.8 and 14.4°C. Cysts in rhizosphere soil increased significantly when new cysts were formed after Zadoks (Z) 47 (booting stage). There was a peak in J2 population densities in soil during Z23 and Z30 (tillering and stem elongation, respectively) whereas J2 population densities were the lowest at Z13 (seedling stage). This research provides important information indicating that J2 populations in roots and soil increased after the wheat winter dormancy period. Knowledge of when different life stages of H. avenae occur in winter wheat in Shandong will provide valuable insights to enable the development of an integrated approach to manage this plant-parasitic nematode.