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Comparative Histological Structure of Different Resistant Soybean Roots to Soybean Cyst Nematode(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2016年05期
Page:
795-799
Research Field:
Publishing date:

Info

Title:
Comparative Histological Structure of Different Resistant Soybean Roots to Soybean Cyst Nematode
Author(s):
LIU He; WANG Yuan-yuan;  ZHU Xiao-feng;  LIU Xiao-yu; CHEN Li-jie;  DUAN Yu-xi
Plant protection college/Nematode Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China）
Keywords:
Soybean;  Synctium;  Cyst nematode
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2016.05.0795
Abstract:
Paraffin sections technique were used to compare the histological structure of different resistant soybean roots, aiming to determine the resistance mechanism of different small black soybean cultivars.The result showed that in the early days of infection there was no significant difference in the number of second stage juveniles inside soybean roots between different resistant cultivars. The formation of synctium in the resistant cultivars was earlier than susceptible cultivars. Harbin small black soybean early formed the syncytial in stele and hardly resistant the invasion.With the nematode infection,resistant cultivars evolved hypersensitive reaction to prevent nematode development forming a very small number of female in roots where almost no females formed in Huipizhi Heidou root, the strongest anti-development.Susceptible cultivar Liaodou 15 had no hypersensitive response occurred within the root formation of a large females. In the host’s vascular bundles, the xylem of susceptible cultivar Liaodou 15 moved outward and the xylem vessel would be reduced in the late infection that was not conducive to the safety of water transportation.However,the structure of xylem didn’t change in the three resistant cultivars and was good for the growth of soybean.

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Last Update: 2016-09-25