首页|Impact of Crop Rotation on Pathotype and Genetic Structure of Phythophthora sojae in Fields

Impact of Crop Rotation on Pathotype and Genetic Structure of Phythophthora sojae in Fields

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To estimate the impact of crop rotation on the pathotype and genetic structure ofPhythophthora sojae in fields, 372 isolates ofP. sojae were obtained from long-term localisation experimental fields in Heilongjiang Province of China. The hypocotyl inoculation method was used to characterize the virulence ofP. sojaeon 13 differential cultivars, and the amplified fragment length polymorphism (AFLP) technique was used to analyze difference in the genetic structure ofP. sojae. The results indicated that an abundant diversity of genetic structures and pathotypes ofP. sojae, a more uniform distribution of pathotypes and less dominance of pathotypes occurred in corn-soybean and wheat-soybean rotation fields than in a continuous soybean mono-cropping field. These findings suggested thatP. sojae did not easily become the dominant race in rotation fields, which maintain disease resistance in soybean varieties. Therefore, the results of this study suggested that Phytophthora stem and root rot of soybeans could be effectively controlled by rotating soybeans with non-host crops of corn and wheat.

Phytophthora sojaepathotype compositiongenetic structurecrop rotationamplified fragment length polymorphism (AFLP)

Zhao Li-ming、Li Shuang、Sui Zhe、Huang Jing、Chen Qiu-ming、Suo Bing、Ding Jun-jie、Liu Wei-ting、Wen Jing-zhi

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Department of Plant Protection, College of Agriculture, Northeast Agricultural University, Harbin 150030, China

Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi 154007, Heilongjiang, China

Supported by the Special Fund for Agro-scientific Research in the Public InterestNational Natural Science Foundation of China

20130301831370449

2016

东北农业大学学报(英文版)
东北农业大学

东北农业大学学报(英文版)

影响因子：0.075
ISSN：1006-8104
年,卷(期)：2016.23(2)
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