Formation of nodules on non-nodulating soybean T201 after treatment with 2,4-dichlorophenoxyacetate |
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Authors: | Shoichiro Akao Satoshi Nakata Tadakatsu Yoneyama |
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Institution: | (1) National Institute of Agrobiological Resources, Kannondai, 305 Tsukuba, Ibaraki, Japan;(2) National Agriculture Research Center, Kannondai, 305 Tsukuba, Ibaraki, Japan |
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Abstract: | The formation of effective root nodules on a non-nodulating line (T201) of soybean (Glycine max (L.) Merr.,) was induced by a treatment with 2,4-dichlorophenoxyacetate (2,4-D). The induced nodules, inoculated with mixed Bradyrhizobium japonicum strains A1017 and IRj2101, had a normal internal structure, red in colour and the cells being filled with bacteroids. Externally, the induced nodules were of unusual shape, being paired or gourd-like in form and were attached to thickened roots. The nodules were capable of acetylene reduction (3.1–3.5 moles g-1 fresh weight nodules h-1), allowing the growth of plants with dark green leaves. |
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Keywords: | 2 4-dichlorophenoxyacetate nodule formation non-nodulating soybean |
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