2004•Europe PMC (PubMed Central)Requires access
Research on the Resistant Mechanisms of Soybean(Glycine max) to Heterodera glycines
Duan Yuxi, Lijie Chen, Fang Yuan, Haiyan Wu, Hui Wang
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Abstract
The resistant mechanisms of soybean(Glycine max) to race 3 of soybean cyst nematode(Heterodera glycines, SCN) were introduced in this paper. Some resistant varieties could repel the J2 of SCN to depart from the soybean root when they penetrated in root after 13d to 16d seedling. The development from J2 to J3 of SCN was partly suppressed in the root of most resistant varieties, and the development of partly or all J3 to J4 was suppressed for most resistant soybeans. Some resistant soybean varieties could stop the juveniles to develop into cysts. The hatching of cysts were suppressed by the root secretion of some resistant varieties. The high pH value (pH 7.1 to pH 7.6) could promote the hatching of SCN. This is one reason to explain why the SCN disease was more serious in the saline-alkali soil than other type soil. PI90763 and PI437654 could markedly protect from the penetration and colonizing of SCN.