|Table of Contents|

Representative Analysis of the Establishment of a Core Collection Focused on Race 3 of Soybean Cyst Nematode(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2008年03期
Page:
366-372
Research Field:
Publishing date:

Info

Title:
Representative Analysis of the Establishment of a Core Collection Focused on Race 3 of Soybean Cyst Nematode
Author(s):
DUAN Yu-xi1; ZHOU Bo; CHEN Li-jie; WU Hai-yan
Shenyang Agriculture University，Nematode Institute of Northern China，Shenyang 110161，Liaoning，China
Keywords:
Primary core collection; SCN3; Soybean; Cyst number; Resistance
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2008.03.0366
Abstract:
Soybean cyst nematode (Heterodera glycines;SCN) is one of the most important pests affecting soybean production，and the main preventing and controlling methods depend on the application of resistant variety.However，most soybean cultivars in China have no resistance to SCN.Physiological races 1，2，3，4，5，7 and 14 have been identified by the Nematode Institute of Northern China，using 64 different small black soybeans (including identification host).We classified the resistance genes by SPSS.The result showed that the 64 resistant cultivars could be divided into 7 clusters based on the difference of resistant genes to SCN3 when analogous distance equaled to 0.52.In this test，we investigated the cyst number to race 3 of SCN in the field(2003-2007).Eighteen resistant cultivars including Yingxianxiaoheidou with the average cyst number(ACN) of 0，eight resistant cultivars including Harbinxiaoheidou with the ACN of 0.07 were identified.The ACN of Pingdingshan and Chadou was 0.13，and from 0.13 to 6 for other resistant cultivars.The primary core collection of 16 soybean germplasms resistant to SCN3 was constrcuted based on the screening results and agronomic traits.This primary core collection will provide a rational framework for undertaking diversity surveys，using genetic variation for the investigation of complex traits and for the discovery of novel traits.

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Last Update: 2014-10-07