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Evaluation of Soybean Germplasm from Provinces in Northeast China for Resistance to Phytophthora sojae

作  者:
XU Xiu-hong;PAN Jan-bo;QU Juan-Juan;YANG Qing-kai
单  位:
;Environment and Resource College, Northeast Agricultural University, Harbin Heilongjiang 150030, PRC
关键词:
soybean;resistant germplasm;phytophthora sojae
摘  要:
Soybean Phytophthora root rot (Phytophthoia sojae) is a severe disease all over the world. Soybean germplasm from central and southern China for resistance has been evaluated by American researchers on a large scale. P. sojae has been found frequentlyin northeast of China in recent years, but not systematic evaluation of soybean germplasm for resistance has occurred there. By means of hypocotyl inoculation, 922 cultivars/lines from northeast of China were screened and evaluated for their response torace 1, and 25 of P. sojae. Generally resistance was less frequent in northeast of China than in central and southern China. Five cultivars/lines were identified that confer resistant responses to race 1, 3, 8, 25 and four additional isolates of P. sojae. These cultivars/lines may provide valuable sources of resistance for future breeding programs.

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