甘肃省干旱灌区连作马铃薯根际土壤中镰刀菌的变化

草业学报 ›› 2011, Vol. 20 ›› Issue (4): 236-243.

甘肃省干旱灌区连作马铃薯根际土壤中镰刀菌的变化

牛秀群^1,3,李金花^1,2*,张俊莲¹,沈宝云¹,柴兆祥²,王蒂^1*

1.甘肃省作物遗传改良与种质创新重点实验室, 甘肃兰州 730070;
2.甘肃农业大学草业学院, 甘肃兰州 730070;
3.甘肃省天水市农业科学研究所, 甘肃天水 741001

收稿日期:2010-02-19 出版日期:2011-04-25 发布日期:2011-08-20
通讯作者: E-mail:li_jinhua@yeah.net,wangd@gsau.edu.cn
作者简介:牛秀群(1970-),女,甘肃兰州人,副研究员。E-mail:nxp-2005@163.com
基金资助:
科技支撑计划(2006BAD21B053),农业部马铃薯产业技术体系(gwzj-19)和农业部行业专项(nyhyzx07-006-3)资助。

Changes of Fusarium in rhizosphere soil under potato continuous cropping systems in arid-irrigated area of Gansu Province

NIU Xiu-qun^1,3, LI Jin-hua^1,2, ZHANG Jun-lian¹, SHEN Bao-yun¹, CHAI Zhao-xiang², WANG Di¹

1.Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Gansu Agricultural University, Lanzhou 730070, China;
2.College of Grassland Science, Gansu Agricultural University, Lanzhou 730070, China;
3.Tianshui Agricultural Institute of Gansu, Tianshui 741001, China

Received:2010-02-19 Online:2011-04-25 Published:2011-08-20

摘要/Abstract

摘要： 为了深入了解根际土壤镰刀菌分布与马铃薯连作之间的关系,以“大西洋”品种为试材,采用根残体分离法,研究了轮作和连作茬口的马铃薯根际土壤中镰刀菌的变化趋势。结果表明,在不同茬口根际土壤中共分离到8个种的镰刀菌,玉米-马铃薯轮作茬口的优势种为再育镰孢,分离频率为23.34%;连作1～3年茬口的优势种均为茄病镰孢,分离频率分别为30.78%,37.70%和45.48%。随着连作年限的增加,马铃薯根际土壤镰刀菌数量呈上升趋势,但不同菌种的数量变化趋势各异,尖孢镰孢、茄病镰孢呈上升趋势,黄色镰孢、再育镰孢呈下降趋势,木贼镰孢变化较为平稳。

Abstract: For a thorough understanding of the relationships between the distribution of Fusarium in rhizosphere soil and potato continuous cropping systems, the changes of Fusarium in rhizosphere soil under potato continuous cropping and rotation cropping were studied by way of root debris separation using the cultivar Atlantic. There were 8 species of Fusarium from rhizosphere soils of different rotations. F. proliferatum was the dominant species of corn-potato rotation systems with a separation frequency up to 23.34%, but in rhizosphere soils of potato continuously cropped for 1-3 years, F. solani was the dominant species with separation frequencies up to 30.78%, 37.70% and 45.48%. With long term continuous cropping of potato, the total amount of Fusarium tended to increase but there were changes in the different Fusarium species. The amounts of F. solani and F. oxysporum increased while the amounts of F. culmorum and F. proliferatum decreased, and the amount of F. equesiti did not changed.

中图分类号:

S435.32

牛秀群,李金花,张俊莲,沈宝云,柴兆祥,王蒂. 甘肃省干旱灌区连作马铃薯根际土壤中镰刀菌的变化[J]. 草业学报, 2011, 20(4): 236-243.

NIU Xiu-qun, LI Jin-hua, ZHANG Jun-lian, SHEN Bao-yun, CHAI Zhao-xiang, WANG Di. Changes of Fusarium in rhizosphere soil under potato continuous cropping systems in arid-irrigated area of Gansu Province[J]. Acta Prataculturae Sinica, 2011, 20(4): 236-243.

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