Relationships Amongst the Fast‐growing Rhizobia of <i>Lablab purpureus, Leucaena leucocephala, Mimosa</i> spp., <i>Acacia farnesiana</i> and <i>Sesbania grandiflora</i> and their Affinities with Other Rhizobial Groups

Wiley - Tập 49 Số 1 - Trang 39-53 - 1980
M. J. Trinick1
1Division of Land Resources Management, CSIRO, Private Bag, P.O. Wembley, Western Australia 6014

Tóm tắt

Colony characteristics, growth in litmus milk, precipitation in calcium glycerophosphate medium and utilization of carbon sources of the root‐nodule bacteria isolated from the tropical legumes Leucaena, Mimosa, Acacia, Sesbania and Lablab were similar to fast‐growing rhizobia of temperate legumes, particularly Rhizobium meliloti. In agglutination tests, isolates from each host shared antigens with one or more of five Rhizobium strains from Leucaena. Infective characteristics of the fast‐growing rhizobia were studied in modified Leonard jars and in agar culture. Cross‐infections by rhizobia between these plants were common and the association often effective. Lablab was effectively nodulated by its own fast‐growing isolate but only formed root swellings, possibly ineffective pseudonodules, with the other isolates. Slow‐growing rhizobia which were able to nodulate Macroptilium atropurpureus were unable to form nodules on these legumes except Lablab which was considered more akin to the cowpea group. All fast‐growing isolates nodulated, often effectively, Vigna unguiculata and V. unguiculata ssp. sesquipedalis. The isolate from Lablab also effectively nodulated a number of other tropical legumes which have previously only been reported to nodulate with slow‐growing nodule bacteria and it also produced ineffective nodulation on Medicago sativa. This is the first record of an effective fast‐growing isolate from Lablab.

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Tài liệu tham khảo

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Wiley

Tập 49 Số 1

39-53

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