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Physiological Differences in Soybean Resistance to Pythium Root Rot(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年03期
Page:
425-429
Research Field:
Publishing date:

Info

Title:
Physiological Differences in Soybean Resistance to Pythium Root Rot
Author(s):
WEI Lai1; 2; 3;  WANG Wei-wei1; 2; 3;  LI Xin-yuan2; 4;  YU De-yue3;  LIU Li-jun1; 2
（1.Soybean Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China； 2.National Harbin Center for Soybean Improvement, Harbin 150086, China; 3.Nanjing Agricultural University, Nanjing 210095, China； 4.Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences，Qiqihar 161006, China）
Keywords:
Pythium-Root Rot; Soybean; Physiological differences.
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.03.0425
Abstract:
Pythium root rot is an important soil-born diseases, revealing the physiological differences of susceptible variety has important significance in resistant varieties breeding. Using physiological techniques to detected MDA, solutions of phenylalanine ammonia-lyase (PAL), peroxidase (POD), the change of soluble sugar and proline content in different resistance cultivars under Pythium infection in soybean hypocotyls.Research results showed that after Pythium infection, in resistant cultivars’hypocotyl and malondialdehyde content were not increased obviously in resistant cultivar, and soluble sugar contents were increased. Solution of phenylalanine ammonialyase activity, peroxidase activity, proline contents increased in different phase and significantly higher than these in the susceptible varieties. Susceptible variety after Pythium ultimum infested conditions, malondialdehyde content were high and soluble sugars would reduce in a given period. Solution of phenylalanine ammonialyase activity, peroxidase activity, and proline content were increased, but less than that in resistant varieties, indicated that resistant varieties had strong physiological and biochemical regulation.

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Last Update: 2017-06-28