The genetic base for soybean cultivars is narrow compared to most other crop species. Twenty‐seven wild perennial Glycine species comprise the tertiary gene pool to soybean that may contain many genes of economic importance for soybean improvement. We evaluated 16 accessions of G. argyrea, G. clandestina, G. dolichocarpa, and G. tomentella for resistance to Heterodera glycines (HG), also known as the soybean cyst nematode, and to multiple isolates of Phakopsora pachyrhizi, the causal fungus of soybean rust. All 16 accessions were classified as resistant to H. glycines HG Type 2.5.7, based on number of cysts per root mass with plant introductions (PIs) 483227, 509501, 563892, and 573064 (all G. tomentella) void of any cysts indicating no reproduction by this pest. All 16 accessions had an immune reaction to one isolate of P. pachyrhizi. Regardless of isolate, no sporulating uredinia were observed on G. argyrea (PI 505151) and G. tomentella (PIs 483227, 509501, and 573064). These results demonstrate that some accessions within the perennial Glycine species harbour resistance to both H. glycines and P. pachyrhizi and would be good candidates for wide hybridization programs seeking to transfer potentially unique multiple resistance genes into soybean.

中文翻译：

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多年生野生甘氨酸对大豆孢囊线虫和大豆锈病的抗性评估

与大多数其他作物品种相比，大豆品种的遗传基础狭窄。二十七个野生多年生甘氨酸物种构成了大豆的第三级基因库，其中可能包含许多对大豆改良具有重要经济意义的基因。我们评估的16个种质G. argyrea，G. clandestina，G. dolichocarpa，和G.短绒用于向电阻胞囊线虫（HG），也被称为大豆胞囊线虫，以及多个分离豆薯层锈菌，的因果真菌大豆锈病。所有16种材料都被归类为对甘氨酸羟化酶具有抗性HG类型2.5.7，根据每个根质量囊肿植物引进（PIS）483227，509501，563892，和573064（所有的数G.短绒）空隙指示由这种害虫没有再现任何囊肿。所有16种保藏物对一个P. pachyrhizi菌株都有免疫反应。不管分离物是什么，在Arg.reasrea（PI 505151）和G. tomentella（PIs 483227、509501和573064）上均未观察到孢子形成的尿素。这些结果表明，多年生甘氨酸物种中的某些种质对H.甘氨酸和P. pachyrhizi均具有抗性 并且将是寻求将潜在的独特多重抗性基因转移到大豆中的广泛杂交计划的良好候选者。