ISSN:
1573-5036
Keywords:
Arctic
;
Astragalus
;
Legumes
;
Numerical analysis
;
Oxytropis
;
Rhizobium
;
Symbiosis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Forty-eight strains of rhizobia were isolated from the root nodules ofAstragalus alpinus (21),Oxytropis maydelliana (19) andOxytropis arctobia (8), three species of arctic legumes found in the Melville Peninsula, Northwest Territories, Canada. On the basis of 74 characteristics (cultural, physiological, biochemical and host nodulation range) the 48 arctic rhizobia could be divided into 11 distinct groups by numerical analysis techniques. All 48 arctic rhizobia were able to nodulate the three arctic legume species and also sainfoin (Onobrychis viciifolia), however, milkvetch (Astragalus cicer) was only nodulated by 33 strains. In general, the arctic rhizobia showed properties found in both Rhizobium and Bradyrhizobium. The adaptation of the arctic strains to low temperature is indicated by their ability to grow in liquid culture at 5°C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02378352
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